should fix the nkExprColonExpr bug in the vm

compiler/evalffi.nim

@@ -151,7 +151,7 @@ proc getField(n: PNode; position: int): PSym =
   else: discard
 
 proc packObject(x: PNode, typ: PType, res: pointer) =
-  InternalAssert x.kind in {nkObjConstr, nkPar}
+  internalAssert x.kind in {nkObjConstr, nkPar}
   # compute the field's offsets:
   discard typ.getSize
   for i in countup(ord(x.kind == nkObjConstr), sonsLen(x) - 1):

compiler/vm.nim

@@ -426,8 +426,7 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
       let src = regs[rb].node
       if src.kind notin {nkEmpty..nkNilLit}:
         let n = src.sons[rc]
-        regs[ra].node = if n.kind == nkExprColonExpr: n[1]
+        regs[ra].node = n
-                        else: n
       else:
         stackTrace(c, tos, pc, errIndexOutOfBounds)
     of opcWrObj:

compiler/vmgen.nim

@@ -308,12 +308,20 @@ proc genAndOr(c: PCtx; n: PNode; opc: TOpcode; dest: var TDest) =
   c.gen(n.sons[2], dest)
   c.patch(L1)
 
-proc nilLiteral(n: PNode): PNode =
+proc canonConst(n: PNode): PNode =
-  result = n
+  if n.kind == nkExprColonExpr:
+    result = n.sons[1]
+  elif n.hasSubnodeWith(nkExprColonExpr):
+    result = n.copyNode
+    newSeq(result.sons, n.len)
+    for i in 0.. <n.len:
+      result.sons[i] = canonConst(n.sons[i])
+  else:
+    result = n
 
 proc rawGenLiteral(c: PCtx; n: PNode): int =
   result = c.constants.len
-  c.constants.add n.nilLiteral
+  c.constants.add n.canonConst
   internalAssert result < 0x7fff
 
 proc sameConstant*(a, b: PNode): bool =

lib/pure/dynlib.nim

@@ -92,7 +92,7 @@ elif defined(windows) or defined(dos):
   proc unloadLib(lib: TLibHandle) = FreeLibrary(cast[THINSTANCE](lib))
 
   proc symAddr(lib: TLibHandle, name: cstring): pointer =
-    result = GetProcAddress(cast[THINSTANCE](lib), name)
+    result = getProcAddress(cast[THINSTANCE](lib), name)
 
 else:
   {.error: "no implementation for dynlib".}