fixes #914

compiler/ccgexprs.nim

@@ -593,7 +593,7 @@ proc unaryArith(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
 
 proc genDeref(p: BProc, e: PNode, d: var TLoc) =
   var a: TLoc
-  if mapType(e.sons[0].typ) == ctArray:
+  if mapType(e.sons[0].typ) in {ctArray, ctPtrToArray}:
     # XXX the amount of hacks for C's arrays is incredible, maybe we should
     # simply wrap them in a struct? --> Losing auto vectorization then?
     expr(p, e.sons[0], d)

compiler/ccgtypes.nim

@@ -185,7 +185,7 @@ proc mapType(typ: PType): TCTypeKind =
   of tyPtr, tyVar, tyRef:
     var base = skipTypes(typ.sons[0], typedescInst)
     case base.kind
-    of tyOpenArray, tyArrayConstr, tyArray, tyVarargs: result = ctArray
+    of tyOpenArray, tyArrayConstr, tyArray, tyVarargs: result = ctPtrToArray
     else: result = ctPtr
   of tyPointer: result = ctPtr
   of tySequence: result = ctNimSeq

compiler/cgendata.nim

@@ -41,7 +41,8 @@ type
     ctInt, ctInt8, ctInt16, ctInt32, ctInt64,
     ctFloat, ctFloat32, ctFloat64, ctFloat128,
     ctUInt, ctUInt8, ctUInt16, ctUInt32, ctUInt64,
-    ctArray, ctStruct, ctPtr, ctNimStr, ctNimSeq, ctProc, ctCString
+    ctArray, ctPtrToArray, ctStruct, ctPtr, ctNimStr, ctNimSeq, ctProc,
+    ctCString
   TCFileSections* = array[TCFileSection, PRope] # represents a generated C file
   TCProcSection* = enum       # the sections a generated C proc consists of
     cpsLocals,                # section of local variables for C proc

tests/ccgbugs/tcgbug.nim

@@ -19,6 +19,9 @@ var
 new(a)
 q(a)
 
+# bug #914
+var x = newWideCString("Hello")
+
 echo "success"