fixes #2169

compiler/astalgo.nim

@@ -387,6 +387,9 @@ proc debugType(n: PType, maxRecDepth=100): PRope =
     if n.sym != nil: 
       app(result, " ")
       app(result, n.sym.name.s)
+    if n.kind in IntegralTypes and n.n != nil:
+      app(result, ", node: ")
+      app(result, debugTree(n.n, 2, maxRecDepth-1, renderType=true))
     if (n.kind != tyString) and (sonsLen(n) > 0) and maxRecDepth != 0:
       app(result, "(")
       for i in countup(0, sonsLen(n) - 1):

compiler/semcall.nim

@@ -56,6 +56,9 @@ proc pickBestCandidate(c: PContext, headSymbol: PNode,
       determineType(c, sym)
       initCandidate(c, z, sym, initialBinding, o.lastOverloadScope)
       z.calleeSym = sym
+
+      #if sym.name.s == "*" and (n.info ?? "temp5.nim") and n.info.line == 140:
+      #  gDebug = true
       matches(c, n, orig, z)
       if errors != nil:
         errors.safeAdd(sym)
@@ -72,10 +75,13 @@ proc pickBestCandidate(c: PContext, headSymbol: PNode,
           if cmp < 0: best = z   # x is better than the best so far
           elif cmp == 0: alt = z # x is as good as the best so far
           else: discard
-        #if sym.name.s == "*" and (n.info ?? "temp5.nim"):
+        #if sym.name.s == "*" and (n.info ?? "temp5.nim") and n.info.line == 140:
         #  echo "Matches ", n.info, " ", typeToString(sym.typ)
         #  debug sym
         #  writeMatches(z)
+        #  for i in 1 .. <len(z.call):
+        #    z.call[i].typ.debug
+        #  quit 1
     sym = nextOverloadIter(o, c, headSymbol)
 
 proc notFoundError*(c: PContext, n: PNode, errors: CandidateErrors) =

compiler/semtypinst.nim

@@ -390,9 +390,8 @@ proc replaceTypeVarsTAux(cl: var TReplTypeVars, t: PType): PType =
       else:
         result = n.typ
 
-  of tyInt:
+  of tyInt, tyFloat:
     result = skipIntLit(t)
-    # XXX now there are also float literals
   
   of tyTypeDesc:
     let lookup = PType(idTableGet(cl.typeMap, t)) # lookupTypeVar(cl, t)

compiler/sigmatch.nim

@@ -91,7 +91,7 @@ proc initCandidate*(ctx: PContext, c: var TCandidate, callee: PType) =
   initIdTable(c.bindings)
 
 proc put(t: var TIdTable, key, val: PType) {.inline.} =
-  idTablePut(t, key, val)
+  idTablePut(t, key, val.skipIntLit)
 
 proc initCandidate*(ctx: PContext, c: var TCandidate, callee: PSym,
                     binding: PNode, calleeScope = -1) =
@@ -571,7 +571,7 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
   assert(f != nil)
   
   if f.kind == tyExpr:
-    put(c.bindings, f, aOrig)
+    if aOrig != nil: put(c.bindings, f, aOrig)
     return isGeneric
 
   assert(aOrig != nil)