more fixes

compiler/lowerings.nim

@@ -114,10 +114,11 @@ proc createObj*(owner: PSym, info: TLineInfo): PType =
   rawAddSon(result, nil)
   incl result.flags, tfFinal
   result.n = newNodeI(nkRecList, info)
-  let s = newSym(skType, getIdent("Env_" & info.toFilename & "_" & $info.line),
-                 owner, info)
-  s.typ = result
-  result.sym = s
+  when false:
+    let s = newSym(skType, getIdent("Env_" & info.toFilename & "_" & $info.line),
+                   owner, info)
+    s.typ = result
+    result.sym = s
 
 proc rawAddField*(obj: PType; field: PSym) =
   assert field.kind == skField

compiler/sighashes.nim

@@ -217,6 +217,14 @@ when defined(debugSigHashes):
 
   let db = open(connection="sighashes.db", user="araq", password="",
                 database="sighashes")
+  db.exec(sql"DROP TABLE IF EXISTS sighashes")
+  db.exec sql"""CREATE TABLE sighashes(
+    id integer primary key,
+    hash varchar(5000) not null,
+    type varchar(5000) not null,
+    unique (hash, type))"""
+  #  select hash, type from sighashes where hash in
+  # (select hash from sighashes group by hash having count(*) > 1) order by hash;
 
 proc hashType*(t: PType; flags: set[ConsiderFlag] = {CoType}): SigHash =
   var c: MD5Context

lib/system/gc.nim

@@ -461,7 +461,7 @@ proc rawNewObj(typ: PNimType, size: int, gch: var GcHeap): pointer =
   gcAssert(typ.kind in {tyRef, tyString, tySequence}, "newObj: 1")
   collectCT(gch)
   var res = cast[PCell](rawAlloc(gch.region, size + sizeof(Cell)))
-  gcAssert typ.kind == tyString or size >= typ.base.size, "size too small"
+  gcAssert typ.kind in {tyString, tySequence} or size >= typ.base.size, "size too small"
   gcAssert((cast[ByteAddress](res) and (MemAlign-1)) == 0, "newObj: 2")
   # now it is buffered in the ZCT
   res.typ = typ