diff --git a/changelog.md b/changelog.md
index 33f36deec2..cf2d4cb170 100644
--- a/changelog.md
+++ b/changelog.md
@@ -23,6 +23,8 @@ errors.
 
 - With `-d:nimPreviewCStringComparisons`, comparsions (`<`, `>`, `<=`, `>=`) between cstrings switch from reference semantics to value semantics like `==` and `!=`.
 
+- `std/parsesql` has been moved to a nimble package, use `nimble` or `atlas` to install it.
+
 ## Standard library additions and changes
 
 [//]: # "Additions:"
@@ -33,6 +35,20 @@ errors.
 - `strutils.multiReplace` overload for character set replacements in a single pass.
 	Useful for string sanitation. Follows existing multiReplace semantics.
 
+- `std/files` adds:
+  - Exports `CopyFlag` enum and `FilePermission` type for fine-grained control of file operations
+  - New file operation procs with `Path` support:
+    - `getFilePermissions`, `setFilePermissions` for managing permissions
+    - `tryRemoveFile` for file deletion
+    - `copyFile` with configurable buffer size and symlink handling
+    - `copyFileWithPermissions` to preserve file attributes
+    - `copyFileToDir` for copying files into directories
+
+- `std/dirs` adds:
+  - New directory operation procs with `Path` support:
+    - `copyDir` with special file handling options
+    - `copyDirWithPermissions` to recursively preserve attributes
+
 - `system.setLenUninit` now supports refc, JS and VM backends.
 
 [//]: # "Changes:"
diff --git a/compiler/ast.nim b/compiler/ast.nim
index d1d2d127a0..d80589c087 100644
--- a/compiler/ast.nim
+++ b/compiler/ast.nim
@@ -819,6 +819,7 @@ type
                                 # nodes are compared by structure!
     counter*: int
     data*: TNodePairSeq
+    ignoreTypes*: bool
 
   TObjectSeq* = seq[RootRef]
   TObjectSet* = object
@@ -1641,8 +1642,8 @@ proc initObjectSet*(): TObjectSet =
   result = TObjectSet(counter: 0)
   newSeq(result.data, StartSize)
 
-proc initNodeTable*(): TNodeTable =
-  result = TNodeTable(counter: 0)
+proc initNodeTable*(ignoreTypes=false): TNodeTable =
+  result = TNodeTable(counter: 0, ignoreTypes: ignoreTypes)
   newSeq(result.data, StartSize)
 
 proc skipTypes*(t: PType, kinds: TTypeKinds; maxIters: int): PType =
diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim
index 4ca34b9d74..d3e215ea56 100644
--- a/compiler/ccgexprs.nim
+++ b/compiler/ccgexprs.nim
@@ -981,7 +981,11 @@ proc genAddr(p: BProc, e: PNode, d: var TLoc) =
     var a: TLoc = initLocExpr(p, e[0])
     if e[0].kind in {nkHiddenStdConv, nkHiddenSubConv, nkConv} and not ignoreConv(e[0]):
       # addr (conv x) introduces a temp because `conv x` is not a rvalue
-      putIntoDest(p, d, e, addrLoc(p.config, expressionsNeedsTmp(p, a)), a.storage)
+      # transform addr ( conv ( x ) ) -> conv ( addr ( x ) )
+      var exprLoc: TLoc = initLocExpr(p, e[0][1])
+      var tmp = getTemp(p, e.typ, needsInit=false)
+      putIntoDest(p, tmp, e, cCast(getTypeDesc(p.module, e.typ), addrLoc(p.config, exprLoc)))
+      putIntoDest(p, d, e, rdLoc(tmp))
     else:
       putIntoDest(p, d, e, addrLoc(p.config, a), a.storage)
 
diff --git a/compiler/closureiters.nim b/compiler/closureiters.nim
index 0feb04d6c9..ee3e4adcac 100644
--- a/compiler/closureiters.nim
+++ b/compiler/closureiters.nim
@@ -63,10 +63,10 @@
 #    `i` should exception be raised in state `i`. For all states in `try` block
 #    the target state is `except` block. For all states in `except` block
 #    the target state is `finally` block. For all other states there is no
-#    target state (0, as the first block can never be neither except nor finally).
+#    target state (0, as the first state can never be except nor finally).
 #  - env var :curExcLevel is created, finallies use it to decide their exit logic
 #  - if there are finallies, env var :finallyPath is created. It contains exit state labels
-#    for every finally level, and is changed in runtime in try, except, break, and continue
+#    for every finally level, and is changed in runtime in try, except, break, and return
 #    nodes to control finally exit behavior.
 #  - the iter body is wrapped into a
 #      var :tmp: Exception
@@ -133,7 +133,7 @@
 # of 3:
 #   somethingElse()
 #   :state = -1 # Exit
-#   break :staleLoop
+#   break :stateLoop
 # else:
 #   return
 
@@ -172,7 +172,7 @@ type
     stateLoopLabel: PSym # Label to break on, when jumping between states.
     tempVarId: int # unique name counter
     hasExceptions: bool # Does closure have yield in try?
-    curExcLandingState: PNode # Negative for except, positive for finally
+    curExcLandingState: PNode
     curFinallyLevel: int
     idgen: IdGenerator
     varStates: Table[ItemId, int] # Used to detect if local variable belongs to multiple states
diff --git a/compiler/concepts.nim b/compiler/concepts.nim
index 7c64b5eae9..a16b2fbfa2 100644
--- a/compiler/concepts.nim
+++ b/compiler/concepts.nim
@@ -271,7 +271,10 @@ proc matchType(c: PContext; fo, ao: PType; m: var MatchCon): bool =
   var
     a = ao
     f = fo
-  
+  if a.isSelf:
+    if m.magic in {mArrPut, mArrGet}:
+      return false
+    a = m.potentialImplementation
   if a.kind in bindableTypes:
     a = existingBinding(m, ao)
     if a == ao and a.kind == tyGenericParam and a.hasElementType and a.elementType.kind != tyNone:
@@ -337,8 +340,11 @@ proc matchType(c: PContext; fo, ao: PType; m: var MatchCon): bool =
       result = true
     else:
       let ak = a.skipTypes(ignorableForArgType - {f.kind})
-      if ak.kind == f.kind and f.kidsLen == ak.kidsLen:
-        result = matchKids(c, f, ak, m)
+      if ak.kind == f.kind:
+        if f.base.kind == tyNone:
+          result = true
+        elif f.kidsLen == ak.kidsLen:
+          result = matchKids(c, f, ak, m)
   of tyGenericInvocation, tyGenericInst:
     result = false
     let ea = a.skipTypes(ignorableForArgType)
diff --git a/compiler/injectdestructors.nim b/compiler/injectdestructors.nim
index f57d451c06..ddb0f80bf4 100644
--- a/compiler/injectdestructors.nim
+++ b/compiler/injectdestructors.nim
@@ -100,6 +100,7 @@ when false:
 proc isLastReadImpl(n: PNode; c: var Con; scope: var Scope): bool =
   let root = parampatterns.exprRoot(n, allowCalls=false)
   if root == nil: return false
+  elif sfSingleUsedTemp in root.flags: return true
 
   var s = addr(scope)
   while s != nil:
@@ -167,8 +168,7 @@ proc isLastRead(n: PNode; c: var Con; s: var Scope): bool =
   if not hasDestructor(c, n.typ) and (n.typ.kind != tyObject or isTrival(getAttachedOp(c.graph, n.typ, attachedAsgn))): return true
 
   let m = skipConvDfa(n)
-  result = (m.kind == nkSym and sfSingleUsedTemp in m.sym.flags) or
-      isLastReadImpl(n, c, s)
+  result = isLastReadImpl(n, c, s)
 
 proc isFirstWrite(n: PNode; c: var Con): bool =
   let m = skipConvDfa(n)
@@ -1140,6 +1140,25 @@ proc genFieldAccessSideEffects(c: var Con; s: var Scope; dest, ri: PNode; flags:
   var snk = c.genSink(s, dest, newAccess, flags)
   result = newTree(nkStmtList, v, snk, c.genWasMoved(newAccess))
 
+proc ownsData(c: var Con; s: var Scope; orig: PNode; flags: set[MoveOrCopyFlag]): PNode =
+  var n = orig
+  while true:
+    case n.kind
+    of nkDotExpr, nkCheckedFieldExpr, nkBracketExpr:
+      n = n[0]
+    else:
+      break
+  if n.kind in nkCallKinds and n.typ != nil and hasDestructor(c, n.typ):
+    result = newNodeIT(nkStmtListExpr, orig.info, orig.typ)
+    let tmp = c.getTemp(s, n.typ, n.info)
+    tmp.sym.flags.incl sfSingleUsedTemp
+    result.add newTree(nkFastAsgn, tmp, copyTree(n))
+    s.final.add c.genDestroy(tmp)
+    n[] = tmp[]
+    result.add copyTree(orig)
+  else:
+    result = nil
+
 proc moveOrCopy(dest, ri: PNode; c: var Con; s: var Scope, flags: set[MoveOrCopyFlag] = {}): PNode =
   var ri = ri
   var isEnsureMove = 0
@@ -1226,7 +1245,11 @@ proc moveOrCopy(dest, ri: PNode; c: var Con; s: var Scope, flags: set[MoveOrCopy
     of nkRaiseStmt:
       result = pRaiseStmt(ri, c, s)
     else:
-      if isAnalysableFieldAccess(ri, c.owner) and isLastRead(ri, c, s) and
+      let isOwnsData = ownsData(c, s, ri2, flags)
+
+      if isOwnsData != nil:
+        result = moveOrCopy(dest, isOwnsData, c, s, flags)
+      elif isAnalysableFieldAccess(ri, c.owner) and isLastRead(ri, c, s) and
           canBeMoved(c, dest.typ):
         # Rule 3: `=sink`(x, z); wasMoved(z)
         let snk = c.genSink(s, dest, ri, flags)
diff --git a/compiler/liftdestructors.nim b/compiler/liftdestructors.nim
index a9eb0263e9..03dda18caa 100644
--- a/compiler/liftdestructors.nim
+++ b/compiler/liftdestructors.nim
@@ -218,23 +218,38 @@ proc fillBodyObj(c: var TLiftCtx; n, body, x, y: PNode; enforceDefaultOp: bool,
       fillBodyObj(c, n[0], body, x, y, enforceDefaultOp = false)
     c.filterDiscriminator = oldfilterDiscriminator
   of nkRecList:
-    for t in items(n): fillBodyObj(c, t, body, x, y, enforceDefaultOp, enforceWasMoved)
+    # destroys in reverse order #24719
+    if c.kind == attachedDestructor:
+      for i in countdown(n.len-1, 0):
+        fillBodyObj(c, n[i], body, x, y, enforceDefaultOp, enforceWasMoved)
+    else:
+      for t in items(n): fillBodyObj(c, t, body, x, y, enforceDefaultOp, enforceWasMoved)
   else:
     illFormedAstLocal(n, c.g.config)
 
 proc fillBodyObjTImpl(c: var TLiftCtx; t: PType, body, x, y: PNode) =
-  if t.baseClass != nil:
-    let dest = newNodeIT(nkHiddenSubConv, c.info, t.baseClass)
-    dest.add newNodeI(nkEmpty, c.info)
-    dest.add x
-    var src = y
-    if c.kind in {attachedAsgn, attachedDeepCopy, attachedSink}:
-      src = newNodeIT(nkHiddenSubConv, c.info, t.baseClass)
-      src.add newNodeI(nkEmpty, c.info)
-      src.add y
+  template fillBase =
+    if t.baseClass != nil:
+      let dest = newNodeIT(nkHiddenSubConv, c.info, t.baseClass)
+      dest.add newNodeI(nkEmpty, c.info)
+      dest.add x
+      var src = y
+      if c.kind in {attachedAsgn, attachedDeepCopy, attachedSink}:
+        src = newNodeIT(nkHiddenSubConv, c.info, t.baseClass)
+        src.add newNodeI(nkEmpty, c.info)
+        src.add y
 
-    fillBody(c, skipTypes(t.baseClass, abstractPtrs), body, dest, src)
-  fillBodyObj(c, t.n, body, x, y, enforceDefaultOp = false)
+      fillBody(c, skipTypes(t.baseClass, abstractPtrs), body, dest, src)
+  template fillFields =
+    fillBodyObj(c, t.n, body, x, y, enforceDefaultOp = false)
+
+  if c.kind == attachedDestructor:
+    # destroys in reverse order #24719
+    fillFields()
+    fillBase()
+  else:
+    fillBase()
+    fillFields()
 
 proc fillBodyObjT(c: var TLiftCtx; t: PType, body, x, y: PNode) =
   var hasCase = isCaseObj(t.n)
diff --git a/compiler/sempass2.nim b/compiler/sempass2.nim
index 65d216b831..7707d1a248 100644
--- a/compiler/sempass2.nim
+++ b/compiler/sempass2.nim
@@ -379,7 +379,9 @@ proc useVar(a: PEffects, n: PNode) =
       # If the variable is explicitly marked as .noinit. do not emit any error
       a.init.add s.id
     elif s.id notin a.init:
-      if s.typ.requiresInit:
+      if s.kind == skResult and tfRequiresInit in s.typ.flags:
+        localError(a.config, n.info, "'result' requires explicit initialization")
+      elif s.typ.requiresInit:
         message(a.config, n.info, warnProveInit, s.name.s)
       elif a.leftPartOfAsgn <= 0:
         if strictDefs in a.c.features:
diff --git a/compiler/semstmts.nim b/compiler/semstmts.nim
index ce8b59f9cd..6c8542b584 100644
--- a/compiler/semstmts.nim
+++ b/compiler/semstmts.nim
@@ -725,7 +725,7 @@ template isLocalSym(sym: PSym): bool =
       sym.typ.kind == tyTypeDesc or
       sfCompileTime in sym.flags) or
       sym.kind in {skProc, skFunc, skIterator} and
-      sfGlobal notin sym.flags
+      sfGlobal notin sym.flags and sym.typ.callConv == ccClosure
 
 proc usesLocalVar(n: PNode): bool =
   case n.kind
diff --git a/compiler/semtypes.nim b/compiler/semtypes.nim
index 42efcd2399..9d660a3bec 100644
--- a/compiler/semtypes.nim
+++ b/compiler/semtypes.nim
@@ -1147,7 +1147,9 @@ proc semAnyRef(c: PContext; n: PNode; kind: TTypeKind; prev: PType): PType =
       let t = newTypeS(tySink, c, result)
       result = t
     else: discard
-    if result.kind == tyRef and c.config.selectedGC in {gcArc, gcOrc, gcAtomicArc}:
+    if result.kind == tyRef and 
+        c.config.selectedGC in {gcArc, gcOrc, gcAtomicArc} and
+        tfTriggersCompileTime notin result.flags:
       result.flags.incl tfHasAsgn
 
 proc findEnforcedStaticType(t: PType): PType =
diff --git a/compiler/transf.nim b/compiler/transf.nim
index a2090af841..197e073477 100644
--- a/compiler/transf.nim
+++ b/compiler/transf.nim
@@ -259,7 +259,8 @@ proc transformBlock(c: PTransf, n: PNode): PNode =
   var labl: PSym
   if c.inlining > 0:
     labl = newLabel(c, n[0])
-    c.transCon.mapping[n[0].sym.itemId] = newSymNode(labl)
+    if n[0].kind != nkEmpty:
+      c.transCon.mapping[n[0].sym.itemId] = newSymNode(labl)
   else:
     labl =
       if n[0].kind != nkEmpty:
@@ -552,7 +553,34 @@ proc transformConv(c: PTransf, n: PNode): PNode =
     # we don't include uint and uint64 here as these are no ordinal types ;-)
     if not isOrdinalType(source):
       # float -> int conversions. ugh.
-      result = transformSons(c, n)
+      # generate a range check:
+      if dest.kind in tyInt..tyInt64:
+        if dest.kind == tyInt64 or source.kind == tyInt64:
+          result = newTransNode(nkChckRange64, n, 3)
+        else:
+          result = newTransNode(nkChckRange, n, 3)
+        dest = skipTypes(n.typ, abstractVar)
+
+        if dest.size < source.size:
+          let intType =
+            if source.size == 4:
+              getSysType(c.graph, n.info, tyInt32)
+            else:
+              getSysType(c.graph, n.info, tyInt64)
+          result[0] = 
+            newTreeIT(n.kind, n.info, n.typ, n[0],
+              newTreeIT(nkConv, n.info, intType,
+              newNodeIT(nkType, n.info, intType), transform(c, n[1]))
+            )
+
+        else:
+          result[0] = transformSons(c, n)
+
+        result[1] = newIntTypeNode(firstOrd(c.graph.config, dest), dest)
+        result[2] = newIntTypeNode(lastOrd(c.graph.config, dest), dest)
+      else:
+        result = transformSons(c, n)
+
     elif firstOrd(c.graph.config, n.typ) <= firstOrd(c.graph.config, n[1].typ) and
         lastOrd(c.graph.config, n[1].typ) <= lastOrd(c.graph.config, n.typ):
       # BUGFIX: simply leave n as it is; we need a nkConv node,
@@ -800,12 +828,20 @@ proc transformFor(c: PTransf, n: PNode): PNode =
         t = formal.ast.typ # better use the type that actually has a destructor.
       elif t.destructor == nil and arg.typ.destructor != nil:
         t = arg.typ
-      # generate a temporary and produce an assignment statement:
-      var temp = newTemp(c, t, formal.info)
-      #incl(temp.sym.flags, sfCursor)
-      addVar(v, temp)
-      stmtList.add(newAsgnStmt(c, nkFastAsgn, temp, arg, true))
-      newC.mapping[formal.itemId] = temp
+
+      if arg.kind in {nkDerefExpr, nkHiddenDeref}:
+        # optimizes for `[]` # bug #24093
+        var temp = newTemp(c, arg[0].typ, formal.info)
+        addVar(v, temp)
+        stmtList.add(newAsgnStmt(c, nkFastAsgn, temp, arg[0], true))
+        newC.mapping[formal.itemId] = newDeref(temp)
+      else:
+        # generate a temporary and produce an assignment statement:
+        var temp = newTemp(c, t, formal.info)
+        #incl(temp.sym.flags, sfCursor)
+        addVar(v, temp)
+        stmtList.add(newAsgnStmt(c, nkFastAsgn, temp, arg, true))
+        newC.mapping[formal.itemId] = temp
     of paVarAsgn:
       assert(skipTypes(formal.typ, abstractInst).kind in {tyVar, tyLent})
       newC.mapping[formal.itemId] = arg
diff --git a/compiler/treetab.nim b/compiler/treetab.nim
index 6685c4a899..1fd539f0f2 100644
--- a/compiler/treetab.nim
+++ b/compiler/treetab.nim
@@ -42,32 +42,37 @@ proc hashTree*(n: PNode): Hash =
   #echo "hashTree ", result
   #echo n
 
-proc treesEquivalent(a, b: PNode): bool =
+proc treesEquivalent(a, b: PNode; ignoreTypes: bool): bool =
   if a == b:
     result = true
   elif (a != nil) and (b != nil) and (a.kind == b.kind):
     case a.kind
-    of nkEmpty, nkNilLit, nkType: result = true
+    of nkEmpty: result = true
     of nkSym: result = a.sym.id == b.sym.id
     of nkIdent: result = a.ident.id == b.ident.id
     of nkCharLit..nkUInt64Lit: result = a.intVal == b.intVal
-    of nkFloatLit..nkFloat64Lit: result = a.floatVal == b.floatVal
+    of nkFloatLit..nkFloat64Lit:
+      result = cast[uint64](a.floatVal) == cast[uint64](b.floatVal)
+      #result = a.floatVal == b.floatVal
     of nkStrLit..nkTripleStrLit: result = a.strVal == b.strVal
+    of nkType, nkNilLit:
+      result = a.typ == b.typ
     else:
       if a.len == b.len:
         for i in 0..<a.len:
-          if not treesEquivalent(a[i], b[i]): return
+          if not treesEquivalent(a[i], b[i], ignoreTypes): return
         result = true
       else:
         result = false
-    if result: result = sameTypeOrNil(a.typ, b.typ)
+    if result and not ignoreTypes:
+      result = sameTypeOrNil(a.typ, b.typ)
   else:
     result = false
 
 proc nodeTableRawGet(t: TNodeTable, k: Hash, key: PNode): int =
   var h: Hash = k and high(t.data)
   while t.data[h].key != nil:
-    if (t.data[h].h == k) and treesEquivalent(t.data[h].key, key):
+    if (t.data[h].h == k) and treesEquivalent(t.data[h].key, key, t.ignoreTypes):
       return h
     h = nextTry(h, high(t.data))
   result = -1
diff --git a/compiler/vmdef.nim b/compiler/vmdef.nim
index f7e18d3010..1ea0c0b2a4 100644
--- a/compiler/vmdef.nim
+++ b/compiler/vmdef.nim
@@ -249,6 +249,7 @@ type
                             # to not slow down interpretation
     globals*: PNode         #
     constants*: PNode       # constant data
+    contstantTab*: TNodeTable
     types*: seq[PType]      # some instructions reference types (e.g. 'except')
     currentExceptionA*, currentExceptionB*: PNode
     exceptionInstr*: int # index of instruction that raised the exception
@@ -298,7 +299,8 @@ proc newCtx*(module: PSym; cache: IdentCache; g: ModuleGraph; idgen: IdGenerator
     prc: PProc(blocks: @[]), module: module, loopIterations: g.config.maxLoopIterationsVM,
     callDepth: g.config.maxCallDepthVM,
     comesFromHeuristic: unknownLineInfo, callbacks: @[], callbackIndex: initTable[string, int](), errorFlag: "",
-    cache: cache, config: g.config, graph: g, idgen: idgen)
+    cache: cache, config: g.config, graph: g, idgen: idgen,
+    contstantTab: initNodeTable(true))
 
 proc refresh*(c: PCtx, module: PSym; idgen: IdGenerator) =
   c.module = module
diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim
index e365d3f236..47a474d28c 100644
--- a/compiler/vmgen.nim
+++ b/compiler/vmgen.nim
@@ -33,7 +33,8 @@ when defined(nimPreviewSlimSystem):
 
 import
   ast, types, msgs, renderer, vmdef, trees,
-  magicsys, options, lowerings, lineinfos, transf, astmsgs
+  magicsys, options, lowerings, lineinfos, transf, astmsgs,
+  treetab
 
 from modulegraphs import getBody
 
@@ -478,10 +479,16 @@ proc sameConstant*(a, b: PNode): bool =
         result = true
 
 proc genLiteral(c: PCtx; n: PNode): int =
-  # types do not matter here:
-  for i in 0..<c.constants.len:
-    if sameConstant(c.constants[i], n): return i
-  result = rawGenLiteral(c, n)
+  result = nodeTableTestOrSet(c.contstantTab, n, c.constants.len)
+  if result == c.constants.len:
+    let lit = rawGenLiteral(c, n)
+    assert lit == result
+
+  when false:
+    # types do not matter here:
+    for i in 0..<c.constants.len:
+      if sameConstant(c.constants[i], n): return i
+    result = rawGenLiteral(c, n)
 
 proc unused(c: PCtx; n: PNode; x: TDest) {.inline.} =
   if x >= 0:
@@ -1182,8 +1189,10 @@ proc genMagic(c: PCtx; n: PNode; dest: var TDest; flags: TGenFlags = {}, m: TMag
   of mEqF64: genBinaryABC(c, n, dest, opcEqFloat)
   of mLeF64: genBinaryABC(c, n, dest, opcLeFloat)
   of mLtF64: genBinaryABC(c, n, dest, opcLtFloat)
-  of mLePtr, mLeU: genBinaryABC(c, n, dest, opcLeu)
-  of mLtPtr, mLtU: genBinaryABC(c, n, dest, opcLtu)
+  of mLeU: genBinaryABC(c, n, dest, opcLeu)
+  of mLtU: genBinaryABC(c, n, dest, opcLtu)
+  of mLePtr, mLtPtr:
+    globalError(c.config, n.info, "pointer comparisons are not available at compile-time")
   of mEqProc, mEqRef:
     genBinaryABC(c, n, dest, opcEqRef)
   of mXor: genBinaryABC(c, n, dest, opcXor)
@@ -1547,8 +1556,7 @@ template cannotEval(c: PCtx; n: PNode) =
   if c.config.cmd == cmdCheck and c.config.m.errorOutputs != {}:
     # nim check command with no error outputs doesn't need to cascade here,
     # includes `tryConstExpr` case which should not continue generating code
-    localError(c.config, n.info, "cannot evaluate at compile time: " & 
-    n.renderTree)
+    localError(c.config, n.info, "cannot evaluate at compile time: " & n.renderTree)
     c.cannotEval = true
     return
   globalError(c.config, n.info, "cannot evaluate at compile time: " &
@@ -1886,7 +1894,7 @@ proc genCheckedObjAccess(c: PCtx; n: PNode; dest: var TDest; flags: TGenFlags) =
   c.freeTemp(objR)
 
 proc genArrAccess(c: PCtx; n: PNode; dest: var TDest; flags: TGenFlags) =
-  if n[0].typ == nil: 
+  if n[0].typ == nil:
     globalError(c.config, n.info, "cannot access array with nil type")
     return
 
diff --git a/doc/manual.md b/doc/manual.md
index 9abd0e762c..29006a7536 100644
--- a/doc/manual.md
+++ b/doc/manual.md
@@ -4062,7 +4062,7 @@ notation. (Thus an operator can have more than two parameters):
     # Multiply and add
     result = a * b + c
 
-  assert `*+`(3, 4, 6) == `+`(`*`(a, b), c)
+  assert `*+`(3, 4, 6) == `+`(`*`(3, 4), 6)
   ```
 
 
diff --git a/doc/nimc.md b/doc/nimc.md
index 1bc3edc4cf..24a2b3afe1 100644
--- a/doc/nimc.md
+++ b/doc/nimc.md
@@ -224,6 +224,8 @@ directories (in this order; later files overwrite previous settings):
    command-line option.
 
 
+[NimScript files](nims.html) can also be used for configuration.
+
 Command-line settings have priority over configuration file settings.
 
 The default build of a project is a `debug build`:idx:. To compile a
diff --git a/doc/tut2.md b/doc/tut2.md
index 1b59288d5b..94434a84c8 100644
--- a/doc/tut2.md
+++ b/doc/tut2.md
@@ -86,6 +86,26 @@ Student(id: 123)` will truncate subclass fields.
 (*is-a* relation) for simple code reuse. Since objects are value types in
 Nim, composition is as efficient as inheritance.
 
+Interfaces
+----------
+Concepts like abstract classes, protocols, traits, and interfaces can be
+simulated as objects of closures:
+
+```nim
+
+type
+  IntFieldInterface = object
+    getter: proc (): int
+    setter: proc (x: int)
+
+
+proc outer: IntFieldInterface =
+  var captureMe = 0
+  proc getter(): int = result = captureMe
+  proc setter(x: int) = captureMe = x
+  
+  result = IntFieldInterface(getter: getter, setter: setter)
+```
 
 Mutually recursive types
 ------------------------
diff --git a/koch.nim b/koch.nim
index dc5ad649c4..48cd2cdcb2 100644
--- a/koch.nim
+++ b/koch.nim
@@ -11,9 +11,9 @@
 
 const
   # examples of possible values for repos: Head, ea82b54
-  NimbleStableCommit = "6a2486b597132340ea7422b078c769b58f21d16d" # 0.20.0
+  NimbleStableCommit = "9207e8b2bbdf66b5a4d1020214cff44d2d30df92" # 0.20.1
   AtlasStableCommit = "26cecf4d0cc038d5422fc1aa737eec9c8803a82b" # 0.9
-  ChecksumsStableCommit = "f8f6bd34bfa3fe12c64b919059ad856a96efcba0" # 2.0.1
+  ChecksumsStableCommit = "0b8e46379c5bc1bf73d8b3011908389c60fb9b98" # 2.0.1
   SatStableCommit = "faf1617f44d7632ee9601ebc13887644925dcc01"
 
   NimonyStableCommit = "1dbabac403ae32e185ee4c29f006d04e04b50c6d" # unversioned \
diff --git a/lib/pure/asyncfile.nim b/lib/pure/asyncfile.nim
index 3825904781..3a57845c22 100644
--- a/lib/pure/asyncfile.nim
+++ b/lib/pure/asyncfile.nim
@@ -428,7 +428,7 @@ proc write*(f: AsyncFile, data: string): Future[void] =
           dealloc buffer
           buffer = nil
     )
-    ol.offset = DWORD(f.offset and 0xffffffff)
+    ol.offset = cast[DWORD](f.offset and 0xffffffff)
     ol.offsetHigh = DWORD(f.offset shr 32)
     f.offset.inc(data.len)
 
diff --git a/lib/pure/collections/sequtils.nim b/lib/pure/collections/sequtils.nim
index 42d54c8392..3dba087aa8 100644
--- a/lib/pure/collections/sequtils.nim
+++ b/lib/pure/collections/sequtils.nim
@@ -116,6 +116,11 @@ macro evalOnceAs(expAlias, exp: untyped,
     newProc(name = genSym(nskTemplate, $expAlias), params = [getType(untyped)],
       body = val, procType = nnkTemplateDef))
 
+template unCheckedInc(x) =
+  {.push overflowChecks: off.}
+  inc(x)
+  {.pop.}
+
 func concat*[T](seqs: varargs[seq[T]]): seq[T] =
   ## Takes several sequences' items and returns them inside a new sequence.
   ## All sequences must be of the same type.
@@ -139,7 +144,7 @@ func concat*[T](seqs: varargs[seq[T]]): seq[T] =
   for s in items(seqs):
     for itm in items(s):
       result[i] = itm
-      inc(i)
+      unCheckedInc(i)
 
 func addUnique*[T](s: var seq[T], x: sink T) =
   ## Adds `x` to the container `s` if it is not already present. 
@@ -170,7 +175,7 @@ func count*[T](s: openArray[T], x: T): int =
   result = 0
   for itm in items(s):
     if itm == x:
-      inc result
+      unCheckedInc result
 
 func cycle*[T](s: openArray[T], n: Natural): seq[T] =
   ## Returns a new sequence with the items of the container `s` repeated
@@ -188,7 +193,7 @@ func cycle*[T](s: openArray[T], n: Natural): seq[T] =
   for x in 0 ..< n:
     for e in s:
       result[o] = e
-      inc o
+      unCheckedInc o
 
 proc repeat*[T](x: T, n: Natural): seq[T] =
   ## Returns a new sequence with the item `x` repeated `n` times.
@@ -321,6 +326,26 @@ func minmax*[T](x: openArray[T], cmp: proc(a, b: T): int): (T, T) {.effectsOf: c
     elif cmp(result[1], x[i]) < 0: result[1] = x[i]
 
 
+template findIt*(s, predicate: untyped): int =
+  ## Iterates through a container and returns the index of the first item that
+  ## fulfills the predicate, or -1
+  ##
+  ## Unlike the `find`, the predicate needs to be an expression using
+  ## the `it` variable for testing, like: `findIt([3, 2, 1], it == 2)`.
+  var
+    res = -1
+    i = 0
+
+  # We must use items here since both `find` and `anyIt` are defined in terms
+  # of `items`
+  # (and not `pairs`)
+  for it {.inject.} in items(s):
+    if predicate:
+      res = i
+      break
+    unCheckedInc(i)
+  res
+
 template zipImpl(s1, s2, retType: untyped): untyped =
   proc zip*[S, T](s1: openArray[S], s2: openArray[T]): retType =
     ## Returns a new sequence with a combination of the two input containers.
@@ -417,7 +442,7 @@ func distribute*[T](s: seq[T], num: Positive, spread = true): seq[seq[T]] =
 
   if extra == 0 or spread == false:
     # Use an algorithm which overcounts the stride and minimizes reading limits.
-    if extra > 0: inc(stride)
+    if extra > 0: unCheckedInc(stride)
     for i in 0 ..< num:
       result[i] = newSeq[T]()
       for g in first ..< min(s.len, first + stride):
@@ -429,7 +454,7 @@ func distribute*[T](s: seq[T], num: Positive, spread = true): seq[seq[T]] =
       last = first + stride
       if extra > 0:
         extra -= 1
-        inc(last)
+        unCheckedInc(last)
       result[i] = newSeq[T]()
       for g in first ..< last:
         result[i].add(s[g])
@@ -586,7 +611,7 @@ proc keepIf*[T](s: var seq[T], pred: proc(x: T): bool {.closure.})
           s[pos] = move(s[i])
         else:
           shallowCopy(s[pos], s[i])
-      inc(pos)
+      unCheckedInc(pos)
   setLen(s, pos)
 
 func delete*[T](s: var seq[T]; slice: Slice[int]) =
@@ -617,8 +642,8 @@ func delete*[T](s: var seq[T]; slice: Slice[int]) =
           s[i] = move(s[j])
         else:
           s[i].shallowCopy(s[j])
-        inc(i)
-        inc(j)
+        unCheckedInc(i)
+        unCheckedInc(j)
       setLen(s, newLen)
     when nimvm: defaultImpl()
     else:
@@ -649,8 +674,8 @@ func delete*[T](s: var seq[T]; first, last: Natural) {.deprecated: "use `delete(
       s[i] = move(s[j])
     else:
       s[i].shallowCopy(s[j])
-    inc(i)
-    inc(j)
+    unCheckedInc(i)
+    unCheckedInc(j)
   setLen(s, newLen)
 
 func insert*[T](dest: var seq[T], src: openArray[T], pos = 0) =
@@ -681,10 +706,10 @@ func insert*[T](dest: var seq[T], src: openArray[T], pos = 0) =
     dec(i)
     dec(j)
   # Insert items from `dest` into `dest` at `pos`
-  inc(j)
+  unCheckedInc(j)
   for item in src:
     dest[j] = item
-    inc(j)
+    unCheckedInc(j)
 
 
 template filterIt*(s, pred: untyped): untyped =
@@ -715,7 +740,7 @@ template filterIt*(s, pred: untyped): untyped =
   var result = newSeq[typeof(s[0])]()
   for it {.inject.} in items(s):
     if pred: result.add(it)
-  result
+  move result
 
 template keepItIf*(varSeq: seq, pred: untyped) =
   ## Keeps the items in the passed sequence (must be declared as a `var`)
@@ -743,7 +768,7 @@ template keepItIf*(varSeq: seq, pred: untyped) =
           varSeq[pos] = move(varSeq[i])
         else:
           shallowCopy(varSeq[pos], varSeq[i])
-      inc(pos)
+      unCheckedInc(pos)
   setLen(varSeq, pos)
 
 since (1, 1):
@@ -842,12 +867,7 @@ template anyIt*(s, pred: untyped): bool =
     assert numbers.anyIt(it > 8) == true
     assert numbers.anyIt(it > 9) == false
 
-  var result = false
-  for it {.inject.} in items(s):
-    if pred:
-      result = true
-      break
-  result
+  findIt(s, pred) != -1
 
 template toSeq1(s: not iterator): untyped =
   # overload for typed but not iterator
@@ -875,7 +895,7 @@ template toSeq2(iter: iterator): untyped =
     var result = newSeq[typeof(iter2)](iter2.len)
     for x in iter2:
       result[i] = x
-      inc i
+      unCheckedInc i
     result
   else:
     type OutType = typeof(iter2())
@@ -920,7 +940,7 @@ template toSeq*(iter: untyped): untyped =
         var i = 0
         for x in iter2:
           result[i] = x
-          inc i
+          unCheckedInc i
         result
     else:
       var result: seq[typeof(iter)] = @[]
diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim
index 92f85b1464..94d8721b96 100644
--- a/lib/pure/collections/tables.nim
+++ b/lib/pure/collections/tables.nim
@@ -707,7 +707,7 @@ template withValue*[A, B](t: Table[A, B], key: A,
   mixin rawGet
   var hc: Hash
   var index = rawGet(t, key, hc)
-  if index > 0:
+  if index >= 0:
     let value {.cursor, inject.} = t.data[index].val
     body1
   else:
diff --git a/lib/pure/httpclient.nim b/lib/pure/httpclient.nim
index ea70ed0c3c..ff6fcb3a66 100644
--- a/lib/pure/httpclient.nim
+++ b/lib/pure/httpclient.nim
@@ -220,7 +220,16 @@
 ##   ```Nim
 ##   import std/httpclient
 ##
-##   let myProxy = newProxy("http://myproxy.network", auth="user:password")
+##   let myProxy = newProxy("http://user:password@myproxy.network")
+##   let client = newHttpClient(proxy = myProxy)
+##   ```
+##
+## SOCKS5 proxy with proxy-side DNS resolving:
+##
+##   ```Nim
+##   import std/httpclient
+##
+##   let myProxy = newProxy("socks5h://user:password@myproxy.network")
 ##   let client = newHttpClient(proxy = myProxy)
 ##   ```
 ##
@@ -338,7 +347,6 @@ proc body*(response: AsyncResponse): Future[string] {.async.} =
 type
   Proxy* = ref object
     url*: Uri
-    auth*: string
 
   MultipartEntry = object
     name, content: string
@@ -387,13 +395,30 @@ proc getDefaultSSL(): SslContext =
       result = defaultSslContext
       doAssert result != nil, "failure to initialize the SSL context"
 
-proc newProxy*(url: string; auth = ""): Proxy =
+proc newProxy*(url: Uri): Proxy =
   ## Constructs a new `TProxy` object.
-  result = Proxy(url: parseUri(url), auth: auth)
+  result = Proxy(url: url)
 
-proc newProxy*(url: Uri; auth = ""): Proxy =
+proc newProxy*(url: string): Proxy =
   ## Constructs a new `TProxy` object.
-  result = Proxy(url: url, auth: auth)
+  result = Proxy(url: parseUri(url))
+
+proc newProxy*(url: Uri; auth: string): Proxy {.deprecated: "Provide auth in url instead".} =
+  result = Proxy(url: url)
+  if auth != "":
+    let parts = auth.split(':')
+    if parts.len != 2:
+      raise newException(ValueError, "Invalid auth string")
+    result.url.username = parts[0]
+    result.url.password = parts[1]
+
+proc newProxy*(url: string; auth: string): Proxy {.deprecated: "Provide auth in url instead".} =
+  result = newProxy(parseUri(url), auth)
+
+proc auth*(p: Proxy): string {.deprecated: "Get auth from p.url.username and p.url.password".} =
+  result = ""
+  if p.url.username != "" or p.url.password != "":
+    result = p.url.username & ":" & p.url.password
 
 proc newMultipartData*: MultipartData {.inline.} =
   ## Constructs a new `MultipartData` object.
@@ -548,7 +573,7 @@ proc generateHeaders(requestUrl: Uri, httpMethod: HttpMethod, headers: HttpHeade
   result = $httpMethod
   result.add ' '
 
-  if proxy.isNil or requestUrl.scheme == "https":
+  if proxy.isNil or (requestUrl.scheme == "https" and proxy.url.scheme == "socks5h"):
     # /path?query
     if not requestUrl.path.startsWith("/"): result.add '/'
     result.add(requestUrl.path)
@@ -575,8 +600,8 @@ proc generateHeaders(requestUrl: Uri, httpMethod: HttpMethod, headers: HttpHeade
     add(result, "Connection: Keep-Alive" & httpNewLine)
 
   # Proxy auth header.
-  if not proxy.isNil and proxy.auth != "":
-    let auth = base64.encode(proxy.auth)
+  if not proxy.isNil and proxy.url.username != "":
+    let auth = base64.encode(proxy.url.username & ":" & proxy.url.password)
     add(result, "Proxy-Authorization: Basic " & auth & httpNewLine)
 
   for key, val in headers:
@@ -689,7 +714,7 @@ proc newAsyncHttpClient*(userAgent = defUserAgent, maxRedirects = 5,
     let exampleHtml = waitFor asyncProc()
     assert "Example Domain" in exampleHtml
     assert "Pizza" notin exampleHtml
-  
+
   new result
   result.headers = headers
   result.userAgent = userAgent
@@ -941,17 +966,75 @@ proc parseResponse(client: HttpClient | AsyncHttpClient,
     when client is AsyncHttpClient:
       result.bodyStream.complete()
 
+proc startSsl(client: HttpClient | AsyncHttpClient, hostname: string) =
+  when defined(ssl):
+    try:
+      client.sslContext.wrapConnectedSocket(
+        client.socket, handshakeAsClient, hostname)
+    except:
+      client.socket.close()
+      raise getCurrentException()
+
+proc socks5hHandshake(client: HttpClient | AsyncHttpClient,
+                      url: Uri) {.multisync.} =
+  var hasAuth = client.proxy.url.username != ""
+  if hasAuth:
+    await client.socket.send("\x05\x02\x00\x02") # Propose auth
+  else:
+    await client.socket.send("\x05\x01\x00") # Connect with no auth
+
+  when client.socket is Socket:
+    var resp = client.socket.recv(2, client.timeout)
+  else:
+    var resp = await client.socket.recv(2)
+
+  if resp == "\x05\x02" and hasAuth:
+    # Perform auth
+    let authStr = "\x01" &
+      char(client.proxy.url.username.len) & client.proxy.url.username &
+      char(client.proxy.url.password.len) & client.proxy.url.password
+    await client.socket.send(authStr)
+    when client.socket is Socket:
+      resp = client.socket.recv(2, client.timeout)
+    else:
+      resp = await client.socket.recv(2)
+    if resp != "\x01\x00":
+      httpError("Proxy authentication failed")
+  elif resp != "\x05\x00":
+    httpError("Unexpected proxy response: " & resp.toHex())
+
+  let port = if url.port != "": parseInt(url.port)
+              elif url.scheme == "http": 80
+              else: 443
+  var p = "  "
+  p[0] = cast[char](port.uint16 shr 8)
+  p[1] = cast[char](port)
+  await client.socket.send("\x05\x01\x00\x03" & url.hostname.len.char & url.hostname & p)
+  when client.socket is Socket:
+    resp = client.socket.recv(10, client.timeout)
+  else:
+    resp = await client.socket.recv(10)
+  if resp.len != 10 or resp[0] != '\x05' or resp[1] != '\x00':
+    httpError("Unexpected proxy response: " & resp.toHex())
+
 proc newConnection(client: HttpClient | AsyncHttpClient,
                    url: Uri) {.multisync.} =
   if client.currentURL.hostname != url.hostname or
       client.currentURL.scheme != url.scheme or
       client.currentURL.port != url.port or
       (not client.connected):
-    # Connect to proxy if specified
-    let connectionUrl =
-      if client.proxy.isNil: url else: client.proxy.url
 
-    let isSsl = connectionUrl.scheme.toLowerAscii() == "https"
+    var isSsl = false
+    var connectionUrl = url
+    if client.proxy.isNil:
+      isSsl = url.scheme.toLowerAscii() == "https"
+    else:
+      connectionUrl = client.proxy.url
+      let proxyScheme = connectionUrl.scheme.toLowerAscii()
+      if proxyScheme == "https":
+        isSsl = true
+      elif proxyScheme == "socks5h":
+        isSsl = url.scheme.toLowerAscii() == "https"
 
     if isSsl and not defined(ssl):
       raise newException(HttpRequestError,
@@ -976,37 +1059,33 @@ proc newConnection(client: HttpClient | AsyncHttpClient,
       client.socket = await asyncnet.dial(connectionUrl.hostname, port)
     else: {.fatal: "Unsupported client type".}
 
-    when defined(ssl):
-      if isSsl:
-        try:
+    if not client.proxy.isNil and client.proxy.url.scheme.toLowerAscii() == "socks5h":
+      await socks5hHandshake(client, url)
+      if isSsl: startSsl(client, url.hostname)
+    else:
+      if isSsl: startSsl(client, connectionUrl.hostname)
+      # If need to CONNECT through http(s) proxy
+      if url.scheme == "https" and not client.proxy.isNil:
+        when defined(ssl):
+          # Pass only host:port for CONNECT
+          var connectUrl = initUri()
+          connectUrl.hostname = url.hostname
+          connectUrl.port = if url.port != "": url.port else: "443"
+
+          let proxyHeaderString = generateHeaders(connectUrl, HttpConnect,
+              newHttpHeaders(), client.proxy)
+          await client.socket.send(proxyHeaderString)
+          let proxyResp = await parseResponse(client, false)
+
+          if not proxyResp.status.startsWith("200"):
+            raise newException(HttpRequestError,
+                              "The proxy server rejected a CONNECT request, " &
+                              "so a secure connection could not be established.")
           client.sslContext.wrapConnectedSocket(
-            client.socket, handshakeAsClient, connectionUrl.hostname)
-        except:
-          client.socket.close()
-          raise getCurrentException()
-
-    # If need to CONNECT through proxy
-    if url.scheme == "https" and not client.proxy.isNil:
-      when defined(ssl):
-        # Pass only host:port for CONNECT
-        var connectUrl = initUri()
-        connectUrl.hostname = url.hostname
-        connectUrl.port = if url.port != "": url.port else: "443"
-
-        let proxyHeaderString = generateHeaders(connectUrl, HttpConnect,
-            newHttpHeaders(), client.proxy)
-        await client.socket.send(proxyHeaderString)
-        let proxyResp = await parseResponse(client, false)
-
-        if not proxyResp.status.startsWith("200"):
+            client.socket, handshakeAsClient, url.hostname)
+        else:
           raise newException(HttpRequestError,
-                            "The proxy server rejected a CONNECT request, " &
-                            "so a secure connection could not be established.")
-        client.sslContext.wrapConnectedSocket(
-          client.socket, handshakeAsClient, url.hostname)
-      else:
-        raise newException(HttpRequestError,
-        "SSL support is not available. Cannot connect over SSL. Compile with -d:ssl to enable.")
+          "SSL support is not available. Cannot connect over SSL. Compile with -d:ssl to enable.")
 
     # May be connected through proxy but remember actual URL being accessed
     client.currentURL = url
@@ -1086,7 +1165,7 @@ proc requestAux(client: HttpClient | AsyncHttpClient, url: Uri,
 
   var data: seq[string] = @[]
   if multipart != nil and multipart.content.len > 0:
-    # `format` modifies `client.headers`, see 
+    # `format` modifies `client.headers`, see
     # https://github.com/nim-lang/Nim/pull/18208#discussion_r647036979
     data = await client.format(multipart)
     newHeaders = client.headers.override(headers)
@@ -1319,7 +1398,7 @@ proc downloadFile*(client: HttpClient, url: Uri | string, filename: string) =
   defer:
     client.getBody = true
   let resp = client.get(url)
-  
+
   if resp.code.is4xx or resp.code.is5xx:
     raise newException(HttpRequestError, resp.status)
 
@@ -1334,7 +1413,7 @@ proc downloadFileEx(client: AsyncHttpClient,
   ## Downloads `url` and saves it to `filename`.
   client.getBody = false
   let resp = await client.get(url)
-  
+
   if resp.code.is4xx or resp.code.is5xx:
     raise newException(HttpRequestError, resp.status)
 
diff --git a/lib/pure/parsesql.nim b/lib/pure/parsesql.nim
index 7bc6fcdcee..c02b6dddc6 100644
--- a/lib/pure/parsesql.nim
+++ b/lib/pure/parsesql.nim
@@ -12,6 +12,8 @@
 ##
 ## Unstable API.
 
+{.deprecated: "use `nimble install parsesql` and import `pkg/parsesql` instead".}
+
 import std/[strutils, lexbase]
 import std/private/decode_helpers
 
diff --git a/lib/pure/selectors.nim b/lib/pure/selectors.nim
index f4ea498880..9391c391ca 100644
--- a/lib/pure/selectors.nim
+++ b/lib/pure/selectors.nim
@@ -25,6 +25,10 @@
 ## Solaris (files, sockets, handles and user events).
 ## Android (files, sockets, handles and user events).
 ##
+## By default, the implementation is chosen based on the target
+## platform; you can pass `-d:nimIoselector=value` to override it.
+## Accepted values are "epoll", "kqueue", "poll", and "select".
+##
 ## TODO: `/dev/poll`, `event ports` and filesystem events.
 
 import std/nativesockets
@@ -342,7 +346,9 @@ else:
           res = int(fdLim.rlim_cur) - 1
         res
 
-  when defined(nimIoselector):
+  const nimIoselector {.strdefine.} = ""
+
+  when nimIoselector != "":
     when nimIoselector == "epoll":
       include ioselects/ioselectors_epoll
     elif nimIoselector == "kqueue":
diff --git a/lib/pure/strutils.nim b/lib/pure/strutils.nim
index c218ac1c53..1a5d4d5d6f 100644
--- a/lib/pure/strutils.nim
+++ b/lib/pure/strutils.nim
@@ -74,6 +74,7 @@ import std/parseutils
 from std/math import pow, floor, log10
 from std/algorithm import fill, reverse
 import std/enumutils
+from std/bitops import fastLog2
 
 from std/unicode import toLower, toUpper
 export toLower, toUpper
@@ -2639,37 +2640,35 @@ func formatSize*(bytes: int64,
   ## * `strformat module<strformat.html>`_ for string interpolation and formatting
   runnableExamples:
     doAssert formatSize((1'i64 shl 31) + (300'i64 shl 20)) == "2.293GiB"
-    doAssert formatSize((2.234*1024*1024).int) == "2.234MiB"
+    doAssert formatSize((2.234*1024*1024).int) == "2.233MiB"
     doAssert formatSize(4096, includeSpace = true) == "4 KiB"
     doAssert formatSize(4096, prefix = bpColloquial, includeSpace = true) == "4 kB"
     doAssert formatSize(4096) == "4KiB"
-    doAssert formatSize(5_378_934, prefix = bpColloquial, decimalSep = ',') == "5,13MB"
+    doAssert formatSize(5_378_934, prefix = bpColloquial, decimalSep = ',') == "5,129MB"
 
-  const iecPrefixes = ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi"]
-  const collPrefixes = ["", "k", "M", "G", "T", "P", "E", "Z", "Y"]
-  var
-    xb: int64 = bytes
-    fbytes: float
-    lastXb: int64 = bytes
-    matchedIndex = 0
-    prefixes: array[9, string]
+  # It doesn't needs Zi and larger units until we use int72 or larger ints.
+  const iecPrefixes = ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei"]
+  const collPrefixes = ["", "k", "M", "G", "T", "P", "E"]
+
+  let lg2 = if bytes == 0:
+      0
+    else:
+      when hasWorkingInt64:
+        fastLog2(bytes)
+      else:
+        fastLog2(int32 bytes)
+  let matchedIndex = lg2 div 10
+  # Lower bits that are smaller than 0.001 when `bytes` is converted to a real number and added prefix, are discard.
+  # Then it is converted to float with round down.
+  let discardBits = (lg2 div 10 - 1) * 10
+
+  var prefixes: array[7, string]
   if prefix == bpColloquial:
     prefixes = collPrefixes
   else:
     prefixes = iecPrefixes
 
-  # Iterate through prefixes seeing if value will be greater than
-  # 0 in each case
-  for index in 1..<prefixes.len:
-    lastXb = xb
-    xb = bytes div (1'i64 shl (index*10))
-    matchedIndex = index
-    if xb == 0:
-      xb = lastXb
-      matchedIndex = index - 1
-      break
-  # xb has the integer number for the latest value; index should be correct
-  fbytes = bytes.float / (1'i64 shl (matchedIndex*10)).float
+  let fbytes = if lg2 < 10: bytes.float elif lg2 < 20: bytes.float / 1024.0 else: (bytes shr discardBits).float / 1024.0
   result = formatFloat(fbytes, format = ffDecimal, precision = 3,
       decimalSep = decimalSep)
   result.trimZeros(decimalSep)
diff --git a/lib/std/dirs.nim b/lib/std/dirs.nim
index 380d6d08f8..9a72ba9b9a 100644
--- a/lib/std/dirs.nim
+++ b/lib/std/dirs.nim
@@ -4,6 +4,7 @@ from std/paths import Path, ReadDirEffect, WriteDirEffect
 
 from std/private/osdirs import dirExists, createDir, existsOrCreateDir, removeDir,
                                moveDir, walkDir, setCurrentDir,
+                               copyDir, copyDirWithPermissions,
                                walkDirRec, PathComponent
 
 export PathComponent
@@ -133,3 +134,59 @@ proc setCurrentDir*(newDir: Path) {.inline, tags: [].} =
   ## See also:
   ## * `getCurrentDir proc <paths.html#getCurrentDir>`_
   osdirs.setCurrentDir(newDir.string)
+
+proc copyDir*(source, dest: Path; skipSpecial = false) {.inline,
+  tags: [ReadDirEffect, WriteIOEffect, ReadIOEffect].} =
+  ## Copies a directory from `source` to `dest`.
+  ##
+  ## On non-Windows OSes, symlinks are copied as symlinks. On Windows, symlinks
+  ## are skipped.
+  ##
+  ## If `skipSpecial` is true, then (besides all directories) only *regular*
+  ## files (**without** special "file" objects like FIFOs, device files,
+  ## etc) will be copied on Unix.
+  ##
+  ## If this fails, `OSError` is raised.
+  ##
+  ## On the Windows platform this proc will copy the attributes from
+  ## `source` into `dest`.
+  ##
+  ## On other platforms created files and directories will inherit the
+  ## default permissions of a newly created file/directory for the user.
+  ## Use `copyDirWithPermissions proc`_
+  ## to preserve attributes recursively on these platforms.
+  ##
+  ## See also:
+  ## * `copyDirWithPermissions proc`_
+  copyDir(source.string, dest.string, skipSpecial)
+
+proc copyDirWithPermissions*(source, dest: Path;
+                             ignorePermissionErrors = true,
+                             skipSpecial = false)
+  {.inline, tags: [ReadDirEffect, WriteIOEffect, ReadIOEffect].} =
+  ## Copies a directory from `source` to `dest` preserving file permissions.
+  ##
+  ## On non-Windows OSes, symlinks are copied as symlinks. On Windows, symlinks
+  ## are skipped.
+  ##
+  ## If `skipSpecial` is true, then (besides all directories) only *regular*
+  ## files (**without** special "file" objects like FIFOs, device files,
+  ## etc) will be copied on Unix.
+  ##
+  ## If this fails, `OSError` is raised. This is a wrapper proc around
+  ## `copyDir`_ and `copyFileWithPermissions`_ procs
+  ## on non-Windows platforms.
+  ##
+  ## On Windows this proc is just a wrapper for `copyDir proc`_ since
+  ## that proc already copies attributes.
+  ##
+  ## On non-Windows systems permissions are copied after the file or directory
+  ## itself has been copied, which won't happen atomically and could lead to a
+  ## race condition. If `ignorePermissionErrors` is true (default), errors while
+  ## reading/setting file attributes will be ignored, otherwise will raise
+  ## `OSError`.
+  ##
+  ## See also:
+  ## * `copyDir proc`_
+  copyDirWithPermissions(source.string, dest.string,
+                              ignorePermissionErrors, skipSpecial)
diff --git a/lib/std/files.nim b/lib/std/files.nim
index c4e0491c99..223e51b6cc 100644
--- a/lib/std/files.nim
+++ b/lib/std/files.nim
@@ -6,8 +6,43 @@
 from std/paths import Path, ReadDirEffect, WriteDirEffect
 
 from std/private/osfiles import fileExists, removeFile,
-                                moveFile
+                                moveFile, copyFile, copyFileWithPermissions,
+                                copyFileToDir, tryRemoveFile,
+                                getFilePermissions, setFilePermissions,
+                                CopyFlag, FilePermission
 
+export CopyFlag, FilePermission
+
+
+proc getFilePermissions*(filename: Path): set[FilePermission] {.inline, tags: [ReadDirEffect].} =
+  ## Retrieves file permissions for `filename`.
+  ##
+  ## `OSError` is raised in case of an error.
+  ## On Windows, only the ``readonly`` flag is checked, every other
+  ## permission is available in any case.
+  ##
+  ## See also:
+  ## * `setFilePermissions proc`_
+  result = getFilePermissions(filename.string)
+
+proc setFilePermissions*(filename: Path, permissions: set[FilePermission],
+                         followSymlinks = true)
+  {.inline, tags: [ReadDirEffect, WriteDirEffect].} =
+  ## Sets the file permissions for `filename`.
+  ##
+  ## If `followSymlinks` set to true (default) and ``filename`` points to a
+  ## symlink, permissions are set to the file symlink points to.
+  ## `followSymlinks` set to false is a noop on Windows and some POSIX
+  ## systems (including Linux) on which `lchmod` is either unavailable or always
+  ## fails, given that symlinks permissions there are not observed.
+  ##
+  ## `OSError` is raised in case of an error.
+  ## On Windows, only the ``readonly`` flag is changed, depending on
+  ## ``fpUserWrite`` permission.
+  ##
+  ## See also:
+  ## * `getFilePermissions proc`_
+  setFilePermissions(filename.string, permissions, followSymlinks)
 
 proc fileExists*(filename: Path): bool {.inline, tags: [ReadDirEffect], sideEffect.} =
   ## Returns true if `filename` exists and is a regular file or symlink.
@@ -15,6 +50,18 @@ proc fileExists*(filename: Path): bool {.inline, tags: [ReadDirEffect], sideEffe
   ## Directories, device files, named pipes and sockets return false.
   result = fileExists(filename.string)
 
+proc tryRemoveFile*(file: Path): bool {.inline, tags: [WriteDirEffect].} =
+  ## Removes the `file`.
+  ##
+  ## If this fails, returns `false`. This does not fail
+  ## if the file never existed in the first place.
+  ##
+  ## On Windows, ignores the read-only attribute.
+  ## 
+  ## See also:
+  ## * `removeFile proc`_
+  result = tryRemoveFile(file.string)
+
 proc removeFile*(file: Path) {.inline, tags: [WriteDirEffect].} =
   ## Removes the `file`.
   ##
@@ -26,6 +73,7 @@ proc removeFile*(file: Path) {.inline, tags: [WriteDirEffect].} =
   ## See also:
   ## * `removeDir proc <dirs.html#removeDir>`_
   ## * `moveFile proc`_
+  ## * `tryRemoveFile proc`_
   removeFile(file.string)
 
 proc moveFile*(source, dest: Path) {.inline,
@@ -44,3 +92,73 @@ proc moveFile*(source, dest: Path) {.inline,
   ## * `moveDir proc <dirs.html#moveDir>`_
   ## * `removeFile proc`_
   moveFile(source.string, dest.string)
+
+proc copyFile*(source, dest: Path; options = cfSymlinkFollow; bufferSize = 16_384) {.inline, tags: [ReadDirEffect, ReadIOEffect, WriteIOEffect].} =
+  ## Copies a file from `source` to `dest`, where `dest.parentDir` must exist.
+  ##
+  ## On non-Windows OSes, `options` specify the way file is copied; by default,
+  ## if `source` is a symlink, copies the file symlink points to. `options` is
+  ## ignored on Windows: symlinks are skipped.
+  ##
+  ## If this fails, `OSError` is raised.
+  ##
+  ## On the Windows platform this proc will
+  ## copy the source file's attributes into dest.
+  ##
+  ## On other platforms you need
+  ## to use `getFilePermissions`_ and
+  ## `setFilePermissions`_
+  ## procs
+  ## to copy them by hand (or use the convenience `copyFileWithPermissions
+  ## proc`_),
+  ## otherwise `dest` will inherit the default permissions of a newly
+  ## created file for the user.
+  ##
+  ## If `dest` already exists, the file attributes
+  ## will be preserved and the content overwritten.
+  ##
+  ## On OSX, `copyfile` C api will be used (available since OSX 10.5) unless
+  ## `-d:nimLegacyCopyFile` is used.
+  ##
+  ## `copyFile` allows to specify `bufferSize` to improve I/O performance.
+  ## 
+  ## See also:
+  ## * `copyFileWithPermissions proc`_
+  copyFile(source.string, dest.string, {options}, bufferSize)
+
+proc copyFileWithPermissions*(source, dest: Path;
+                              ignorePermissionErrors = true,
+                              options = cfSymlinkFollow) {.inline.} =
+  ## Copies a file from `source` to `dest` preserving file permissions.
+  ##
+  ## On non-Windows OSes, `options` specify the way file is copied; by default,
+  ## if `source` is a symlink, copies the file symlink points to. `options` is
+  ## ignored on Windows: symlinks are skipped.
+  ##
+  ## This is a wrapper proc around `copyFile`_,
+  ## `getFilePermissions`_ and `setFilePermissions`_
+  ## procs on non-Windows platforms.
+  ##
+  ## On Windows this proc is just a wrapper for `copyFile proc`_ since
+  ## that proc already copies attributes.
+  ##
+  ## On non-Windows systems permissions are copied after the file itself has
+  ## been copied, which won't happen atomically and could lead to a race
+  ## condition. If `ignorePermissionErrors` is true (default), errors while
+  ## reading/setting file attributes will be ignored, otherwise will raise
+  ## `OSError`.
+  ##
+  ## See also:
+  ## * `copyFile proc`_
+  copyFileWithPermissions(source.string, dest.string,
+                              ignorePermissionErrors, {options})
+
+proc copyFileToDir*(source, dir: Path, options = cfSymlinkFollow; bufferSize = 16_384) {.inline.} =
+  ## Copies a file `source` into directory `dir`, which must exist.
+  ##
+  ## On non-Windows OSes, `options` specify the way file is copied; by default,
+  ## if `source` is a symlink, copies the file symlink points to. `options` is
+  ## ignored on Windows: symlinks are skipped.
+  ##
+  ## `copyFileToDir` allows to specify `bufferSize` to improve I/O performance.
+  copyFileToDir(source.string, dir.string, {options}, bufferSize)
diff --git a/lib/system.nim b/lib/system.nim
index a18e81d3d7..fbbc2a3398 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -1465,6 +1465,8 @@ proc isNil*[T: proc | iterator {.closure.}](x: T): bool {.noSideEffect, magic: "
   ## Fast check whether `x` is nil. This is sometimes more efficient than
   ## `== nil`.
 
+proc supportsCopyMem(t: typedesc): bool {.magic: "TypeTrait".}
+
 when defined(nimHasTopDownInference):
   # magic used for seq type inference
   proc `@`*[T](a: openArray[T]): seq[T] {.magic: "OpenArrayToSeq".} =
@@ -1472,8 +1474,17 @@ when defined(nimHasTopDownInference):
     ##
     ## This is not as efficient as turning a fixed length array into a sequence
     ## as it always copies every element of `a`.
-    newSeq(result, a.len)
-    for i in 0..a.len-1: result[i] = a[i]
+    let sz = a.len
+    when supportsCopyMem(T) and not defined(js):
+      result = newSeqUninit[T](sz)
+      when nimvm:
+        for i in 0..sz-1: result[i] = a[i]
+      else:
+        if sz != 0:
+          copyMem(addr result[0], addr a[0], sizeof(T) * sz)
+    else:
+      newSeq(result, sz)
+      for i in 0..sz-1: result[i] = a[i]
 else:
   proc `@`*[T](a: openArray[T]): seq[T] =
     ## Turns an *openArray* into a sequence.
@@ -1644,8 +1655,6 @@ when not defined(js) and defined(nimV2):
           vTable: UncheckedArray[pointer] # vtable for types
     PNimTypeV2 = ptr TNimTypeV2
 
-proc supportsCopyMem(t: typedesc): bool {.magic: "TypeTrait".}
-
 when notJSnotNims and defined(nimSeqsV2):
   include "system/strs_v2"
   include "system/seqs_v2"
diff --git a/tests/arc/tdestructor_order.nim b/tests/arc/tdestructor_order.nim
new file mode 100644
index 0000000000..6b707486e6
--- /dev/null
+++ b/tests/arc/tdestructor_order.nim
@@ -0,0 +1,39 @@
+discard """
+  output: '''
+destroying d
+destroying c
+destroying a 2
+destroying d
+destroying c
+destroying a 1
+'''
+joinable: false
+"""
+
+type
+  Aaaa {.inheritable.} = object
+    vvvv: int
+  Bbbb = object of Aaaa
+    c: Cccc
+    d: Dddd
+  Cccc = object
+  Dddd = object
+
+  Holder = object
+    member: ref Aaaa
+
+proc `=destroy`(v: Cccc) =
+  echo "destroying c"
+
+proc `=destroy`(v: Dddd) =
+  echo "destroying d"
+
+proc `=destroy`(v: Aaaa) =
+  echo "destroying a ", v.vvvv
+
+func makeHolder(vvvv: int): ref Holder =
+  (ref Holder)(member: (ref Bbbb)(vvvv: vvvv))
+
+block:
+  var v = makeHolder(1)
+  var v2 = makeHolder(2)
\ No newline at end of file
diff --git a/tests/ccgbugs/taddrconvs.nim b/tests/ccgbugs/taddrconvs.nim
index 6990648c4a..759b1c1e0f 100644
--- a/tests/ccgbugs/taddrconvs.nim
+++ b/tests/ccgbugs/taddrconvs.nim
@@ -25,3 +25,23 @@ block:
     var m = uint64(12)
     foo(culonglong(m))
   main()
+
+block: # bug #25109
+  type T = culonglong
+  proc r(c: var T) = c = 1
+  proc h(a: var culonglong) = r(T(a))
+  var a: culonglong
+  h(a)
+  doAssert a == 1
+
+block: # bug #25111
+  type T = culonglong
+  proc r(c: var T) = c = 1
+
+  proc foo =
+    var a: uint64
+    r(T(a))
+    doAssert a == 1
+
+  foo()
+
diff --git a/tests/concepts/tconceptsv2.nim b/tests/concepts/tconceptsv2.nim
index 369fd3e854..c735aeeacc 100644
--- a/tests/concepts/tconceptsv2.nim
+++ b/tests/concepts/tconceptsv2.nim
@@ -497,6 +497,28 @@ block:
 
   spring({One,Two})
 
+block: # bare `range`
+  type
+    MyRange = 0..64
+    MyConcept = concept
+      proc a(x: typedesc[Self])
+
+  proc a(x: typedesc[range]) = discard
+  proc spring(x: typedesc[MyConcept]) = discard
+  spring(MyRange)
+
+block:
+  type
+    A = object
+    TestConcept =
+      concept
+          proc x(x: Self)
+
+  proc x(x: not object) =
+    discard
+
+  assert A isnot TestConcept
+
 # this code fails inside a block for some reason
 type Indexable[T] = concept
   proc `[]`(t: Self, i: int): T
diff --git a/tests/destructor/tdestructor.nim b/tests/destructor/tdestructor.nim
index e081eb251d..bb5889f345 100644
--- a/tests/destructor/tdestructor.nim
+++ b/tests/destructor/tdestructor.nim
@@ -1,5 +1,6 @@
 discard """
-  output: '''----1
+  output: '''
+----1
 myobj constructed
 myobj destroyed
 ----2
@@ -14,8 +15,8 @@ mygeneric3 constructed
 mygeneric1 destroyed
 ----5
 mydistinctObj constructed
-myobj destroyed
 mygeneric2 destroyed
+myobj destroyed
 ------------------8
 mygeneric1 destroyed
 ----6
diff --git a/tests/destructor/tnewruntime_strutils.nim b/tests/destructor/tnewruntime_strutils.nim
index 7e4074218f..e73e9b2445 100644
--- a/tests/destructor/tnewruntime_strutils.nim
+++ b/tests/destructor/tnewruntime_strutils.nim
@@ -53,11 +53,11 @@ proc nonStaticTests =
   block: # formatSize tests
     when not defined(js):
       doAssert formatSize((1'i64 shl 31) + (300'i64 shl 20)) == "2.293GiB"   # <=== bug #8231
-    doAssert formatSize((2.234*1024*1024).int) == "2.234MiB"
+    doAssert formatSize((2.234*1024*1024).int) == "2.233MiB"
     doAssert formatSize(4096) == "4KiB"
     doAssert formatSize(4096, prefix=bpColloquial, includeSpace=true) == "4 kB"
     doAssert formatSize(4096, includeSpace=true) == "4 KiB"
-    doAssert formatSize(5_378_934, prefix=bpColloquial, decimalSep=',') == "5,13MB"
+    doAssert formatSize(5_378_934, prefix=bpColloquial, decimalSep=',') == "5,129MB"
 
   block: # formatEng tests
     doAssert formatEng(0, 2, trim=false) == "0.00"
diff --git a/tests/errmsgs/t25117.nim b/tests/errmsgs/t25117.nim
new file mode 100644
index 0000000000..1f63e65b49
--- /dev/null
+++ b/tests/errmsgs/t25117.nim
@@ -0,0 +1,13 @@
+discard """
+  errormsg: "'result' requires explicit initialization"
+"""
+
+type RI {.requiresInit.} = object
+  v: int
+
+proc xxx(v: var RI) = discard
+
+proc f(T: type): T =
+  xxx(result) # Should fail
+
+discard f(RI)
\ No newline at end of file
diff --git a/tests/errmsgs/t25120.nim b/tests/errmsgs/t25120.nim
new file mode 100644
index 0000000000..217bba1fa7
--- /dev/null
+++ b/tests/errmsgs/t25120.nim
@@ -0,0 +1,6 @@
+discard """
+  errormsg: "request to generate code for .compileTime proc: riesig"
+"""
+
+proc riesig(): NimNode = discard
+discard riesig()
diff --git a/tests/global/tglobalclosure.nim b/tests/global/tglobalclosure.nim
new file mode 100644
index 0000000000..81cdba37da
--- /dev/null
+++ b/tests/global/tglobalclosure.nim
@@ -0,0 +1,14 @@
+discard """
+  errormsg: "cannot assign local to global variable"
+  line: 11
+"""
+
+proc main() =
+  var x = "hi"
+  proc p() =
+    echo x
+
+  let a {.global.} = p
+  p()
+
+main()
diff --git a/tests/global/tglobalclosure2.nim b/tests/global/tglobalclosure2.nim
new file mode 100644
index 0000000000..bd6b9bfd61
--- /dev/null
+++ b/tests/global/tglobalclosure2.nim
@@ -0,0 +1,17 @@
+discard """
+  errormsg: "cannot assign local to global variable"
+  line: 14
+"""
+
+type X = object
+  p: proc() {.closure.}
+
+proc main() =
+  var x = "hi"
+  proc p() =
+    echo x
+
+  let a {.global.} = X(p: p)
+  a.p()
+
+main()
diff --git a/tests/global/tglobalproc.nim b/tests/global/tglobalproc.nim
new file mode 100644
index 0000000000..ba6f5a7999
--- /dev/null
+++ b/tests/global/tglobalproc.nim
@@ -0,0 +1,17 @@
+discard """
+output: "hi\nhi"
+"""
+
+type X = object
+  p: proc() {.nimcall.}
+
+proc main() =
+  proc p() =
+    echo "hi"
+
+  let a {.global.} = p
+  let b {.global.} = X(p: p)
+  a()
+  b.p()
+
+main()
diff --git a/tests/iter/titer_issues.nim b/tests/iter/titer_issues.nim
index 2452102bd3..efea76c02e 100644
--- a/tests/iter/titer_issues.nim
+++ b/tests/iter/titer_issues.nim
@@ -412,3 +412,15 @@ block: # bug #24033
     collections.add (id, str, $num)
 
   doAssert collections[1] == (1, "foo", "3.14")
+
+
+block: # bug #25121
+  iterator k(): int =
+    when nimvm:
+      yield 0
+    else:
+      yield 0
+
+  for _ in k():
+    (proc() = (; let _ = block: 0))()
+
diff --git a/tests/stdlib/thttpclient.nim b/tests/stdlib/thttpclient.nim
index 0bd4796704..99ccaba8b3 100644
--- a/tests/stdlib/thttpclient.nim
+++ b/tests/stdlib/thttpclient.nim
@@ -107,6 +107,13 @@ proc asyncTest() {.async.} =
   #  client = newAsyncHttpClient(proxy = newProxy("http://51.254.106.76:80/"))
   #  var resp = await client.request("https://github.com")
   #  echo resp
+  #
+  # SOCKS5H proxy test
+  # when manualTests:
+  #   block:
+  #     client = newAsyncHttpClient(proxy = newProxy("socks5h://user:blabla@127.0.0.1:9050"))
+  #     var resp = await client.request("https://api.my-ip.io/v2/ip.txt")
+  #     echo await resp.body
 
 proc syncTest() =
   var client = newHttpClient()
diff --git a/tests/stdlib/thttpclient_ssl.nim b/tests/stdlib/thttpclient_ssl.nim
index 4208767925..962d047bb9 100644
--- a/tests/stdlib/thttpclient_ssl.nim
+++ b/tests/stdlib/thttpclient_ssl.nim
@@ -1,6 +1,6 @@
 discard """
   cmd: "nim $target --mm:refc -d:ssl $options $file"
-  disabled: "openbsd"
+  disabled: "true"
   retries: 2
 """
 
diff --git a/tests/stdlib/tos.nim b/tests/stdlib/tos.nim
index 611659fdbb..3b77ec3c0a 100644
--- a/tests/stdlib/tos.nim
+++ b/tests/stdlib/tos.nim
@@ -30,6 +30,9 @@ Raises
 from stdtest/specialpaths import buildDir
 import std/[syncio, assertions, osproc, os, strutils, pathnorm]
 
+import std/paths except getCurrentDir
+import std/[files, dirs]
+
 block fileOperations:
   let files = @["these.txt", "are.x", "testing.r", "files.q"]
   let dirs = @["some", "created", "test", "dirs"]
@@ -52,11 +55,11 @@ block fileOperations:
     doAssertRaises(OSError): copyFile(file, dname/sub/fname2)
     doAssertRaises(OSError): copyFileToDir(file, dname/sub)
     doAssertRaises(ValueError): copyFileToDir(file, "")
-    copyFile(file, file2)
+    copyFile(Path file, Path file2)
     doAssert fileExists(file2)
     doAssert readFile(file2) == str
     createDir(dname/sub)
-    copyFileToDir(file, dname/sub)
+    copyFileToDir(Path file, Path dname/sub)
     doAssert fileExists(dname/sub/fname)
     removeDir(dname/sub)
     doAssert not dirExists(dname/sub)
@@ -131,12 +134,13 @@ block fileOperations:
   removeDir(dname)
 
   # test copyDir:
-  createDir("a/b")
+  createDir(Path "a/b")
   open("a/b/file.txt", fmWrite).close
   createDir("a/b/c")
   open("a/b/c/fileC.txt", fmWrite).close
 
-  copyDir("a", "../dest/a")
+  createDir(Path"a/b")
+  copyDir(Path "a",  Path "../dest/a")
   removeDir("a")
 
   doAssert dirExists("../dest/a/b")
@@ -169,7 +173,7 @@ block fileOperations:
       doAssert execCmd("mkfifo -m 600 a/fifoFile") == 0
 
     copyDir("a/", "../dest/a/", skipSpecial = true)
-    copyDirWithPermissions("a/", "../dest2/a/", skipSpecial = true)
+    copyDirWithPermissions(Path "a/", Path "../dest2/a/", skipSpecial = true)
     removeDir("a")
 
   # Symlink handling in `copyFile`, `copyFileWithPermissions`, `copyFileToDir`,
diff --git a/tests/stdlib/tsequtils.nim b/tests/stdlib/tsequtils.nim
index df0fb1610a..027f9b1195 100644
--- a/tests/stdlib/tsequtils.nim
+++ b/tests/stdlib/tsequtils.nim
@@ -258,6 +258,17 @@ block: # any
   doAssert any(anumbers, proc (x: int): bool = return x > 8) == true
   doAssert any(anumbers, proc (x: int): bool = return x > 9) == false
 
+block: # findIt
+  let
+    numbers = @[1, 4, 5, 8, 9, 7, 4]
+    anumbers = [1, 4, 5, 8, 9, 7, 4]
+    len0seq: seq[int] = @[]
+  doAssert findIt(numbers, it == 4) == 1
+  doAssert findIt(numbers, it > 9) == -1
+  doAssert findIt(len0seq, true) == -1
+  doAssert findIt(anumbers, it > 8) == 4
+  doAssert findIt(anumbers, it > 9) == -1
+
 block: # anyIt
   let
     numbers = @[1, 4, 5, 8, 9, 7, 4]
diff --git a/tests/stdlib/tstrutils.nim b/tests/stdlib/tstrutils.nim
index db9fb80c44..dfa72faf22 100644
--- a/tests/stdlib/tstrutils.nim
+++ b/tests/stdlib/tstrutils.nim
@@ -789,12 +789,71 @@ bar
   block: # formatSize
     disableVm:
       when hasWorkingInt64:
+        doAssert formatSize(1024'i64 * 1024 * 1024 * 2 - 1) == "1.999GiB"
+        doAssert formatSize(1024'i64 * 1024 * 1024 * 2) == "2GiB"
         doAssert formatSize((1'i64 shl 31) + (300'i64 shl 20)) == "2.293GiB" # <=== bug #8231
-      doAssert formatSize((2.234*1024*1024).int) == "2.234MiB"
+        doAssert formatSize(int64.high) == "7.999EiB"
+        doAssert formatSize(int64.high div 2 + 1) == "4EiB"
+        doAssert formatSize(int64.high div 2) == "3.999EiB"
+        doAssert formatSize(int64.high div 4 + 1) == "2EiB"
+        doAssert formatSize(int64.high div 4) == "1.999EiB"
+        doAssert formatSize(int64.high div 8 + 1) == "1EiB"
+        doAssert formatSize(int64.high div 8) == "1023.999PiB"
+        doAssert formatSize(int64.high div 16 + 1) == "512PiB"
+        doAssert formatSize(int64.high div 16) == "511.999PiB"
+      doAssert formatSize(0) == "0B"
+      doAssert formatSize(0, includeSpace = true) == "0 B"
+      doAssert formatSize(1) == "1B"
+      doAssert formatSize(2) == "2B"
+      doAssert formatSize(1022) == "1022B"
+      doAssert formatSize(1023) == "1023B"
+      doAssert formatSize(1024) == "1KiB"
+      doAssert formatSize(1025) == "1.001KiB"
+      doAssert formatSize(1026) == "1.002KiB"
+      doAssert formatSize(1024 * 2 - 2) == "1.998KiB"
+      doAssert formatSize(1024 * 2 - 1) == "1.999KiB"
+      doAssert formatSize(1024 * 2) == "2KiB"
+      doAssert formatSize(1024 * 2 + 1) == "2.001KiB"
+      doAssert formatSize(1024 * 2 + 2) == "2.002KiB"
+      doAssert formatSize(4096 - 1) == "3.999KiB"
       doAssert formatSize(4096) == "4KiB"
+      doAssert formatSize(4096 + 1) == "4.001KiB"
+      doAssert formatSize(1024 * 512 - 1) == "511.999KiB"
+      doAssert formatSize(1024 * 512) == "512KiB"
+      doAssert formatSize(1024 * 512 + 1) == "512.001KiB"
+      doAssert formatSize(1024 * 1024 - 2) == "1023.998KiB"
+      doAssert formatSize(1024 * 1024 - 1) == "1023.999KiB"
+      doAssert formatSize(1024 * 1024) == "1MiB"
+      doAssert formatSize(1024 * 1024 + 1) == "1MiB"
+      doAssert formatSize(1024 * 1024 + 1023) == "1MiB"
+      doAssert formatSize(1024 * 1024 + 1024) == "1.001MiB"
+      doAssert formatSize(1024 * 1024 + 1024 * 2) == "1.002MiB"
+      doAssert formatSize(1024 * 1024 * 2 - 1) == "1.999MiB"
+      doAssert formatSize(1024 * 1024 * 2) == "2MiB"
+      doAssert formatSize(1024 * 1024 * 2 + 1) == "2MiB"
+      doAssert formatSize(1024 * 1024 * 2 + 1024) == "2.001MiB"
+      doAssert formatSize(1024 * 1024 * 2 + 1024 * 2) == "2.002MiB"
+      doAssert formatSize(1024 * 1024 * 4 - 1) == "3.999MiB"
+      doAssert formatSize(1024 * 1024 * 4) == "4MiB"
+      doAssert formatSize(1024 * (1024 * 4 + 1)) == "4.001MiB"
+      doAssert formatSize(1024 * 1024 * 512 - 1025) == "511.998MiB"
+      doAssert formatSize(1024 * 1024 * 512 - 1) == "511.999MiB"
+      doAssert formatSize(1024 * 1024 * 512) == "512MiB"
+      doAssert formatSize(1024 * 1024 * 512 + 1) == "512MiB"
+      doAssert formatSize(1024 * 1024 * 512 + 1024) == "512.001MiB"
+      doAssert formatSize(1024 * 1024 * 512 + 1024 * 2) == "512.002MiB"
+      doAssert formatSize(1024 * 1024 * 1024 - 1) == "1023.999MiB"
+      doAssert formatSize(1024 * 1024 * 1024) == "1GiB"
+      doAssert formatSize(1024 * 1024 * 1024 + 1) == "1GiB"
+      doAssert formatSize(1024 * 1024 * 1025) == "1.001GiB"
+      doAssert formatSize(1024 * 1024 * 1026) == "1.002GiB"
+      # != 2.234MiB as (2.234 * 1024 * 1024).int.float / (1024 * 1024) = 2.23399...
+      # and formatSize round down the value
+      doAssert formatSize((2.234*1024*1024).int) == "2.233MiB"
       doAssert formatSize(4096, prefix = bpColloquial, includeSpace = true) == "4 kB"
       doAssert formatSize(4096, includeSpace = true) == "4 KiB"
-      doAssert formatSize(5_378_934, prefix = bpColloquial, decimalSep = ',') == "5,13MB"
+      # (5378934).float / (1024 * 1024) = 5.12975...
+      doAssert formatSize(5_378_934, prefix = bpColloquial, decimalSep = ',') == "5,129MB"
 
   block: # formatEng
     disableVm:
diff --git a/tests/stdlib/tsystem.nim b/tests/stdlib/tsystem.nim
index ba05cb4286..3385d1107b 100644
--- a/tests/stdlib/tsystem.nim
+++ b/tests/stdlib/tsystem.nim
@@ -245,3 +245,32 @@ proc bar2() =
 
 static: bar2()
 bar2()
+
+when not defined(js):
+  proc foo =
+    block:
+      var s1:int = -10
+      doAssertRaises(RangeDefect):
+        var n2:Natural = s1.Natural
+
+    block:
+      var f = 751.0
+      let m = f.int8
+
+    block:
+      var s2:float = -10
+      doAssertRaises(RangeDefect):
+        var n2:Natural = s2.Natural
+
+
+    block:
+      type A = range[0..10]
+
+      let f = 156.0
+
+      doAssertRaises(RangeDefect):
+        let a = f.A
+
+        echo a # 156
+
+  foo()
diff --git a/tools/debug/nim-gdb.py b/tools/debug/nim-gdb.py
index 59e6ee99ce..2637481aee 100644
--- a/tools/debug/nim-gdb.py
+++ b/tools/debug/nim-gdb.py
@@ -4,6 +4,18 @@ import re
 import sys
 import traceback
 
+# Add compatibility for older GDB versions
+if not hasattr(gdb, 'SYMBOL_FUNCTION_DOMAIN'):
+    gdb.SYMBOL_FUNCTION_DOMAIN = 0  # This is the value used in newer GDB versions
+
+# Configure demangling for Itanium C++ ABI (which Nim uses)
+try:
+    gdb.execute("set demangle-style gnu-v3")  # GNU v3 style handles Itanium mangling
+    gdb.execute("set print asm-demangle on")
+    gdb.execute("set print demangle on")
+except Exception as e:
+    gdb.write(f"Warning: Could not configure demangling: {str(e)}\n", gdb.STDERR)
+
 # some feedback that the nim runtime support is loading, isn't a bad
 # thing at all.
 gdb.write("Loading Nim Runtime support.\n", gdb.STDERR)
@@ -70,12 +82,12 @@ class NimTypeRecognizer:
   type_map_static = {
     'NI': 'system.int',  'NI8': 'int8', 'NI16': 'int16',  'NI32': 'int32',
     'NI64': 'int64',
-    
+
     'NU': 'uint', 'NU8': 'uint8','NU16': 'uint16', 'NU32': 'uint32',
     'NU64': 'uint64',
-    
+
     'NF': 'float', 'NF32': 'float32', 'NF64': 'float64',
-    
+
     'NIM_BOOL': 'bool',
 
     'NIM_CHAR': 'char', 'NCSTRING': 'cstring', 'NimStringDesc': 'string', 'NimStringV2': 'string'
@@ -556,7 +568,7 @@ class NimSeqPrinter:
         except RuntimeError:
           inaccessible = True
           yield "data[{0}]".format(i), "inaccessible"
-      
+
 ################################################################################
 
 class NimArrayPrinter: