Fix for PR4285: allow intializing a const wchar_t array with a wide
string.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72663 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index 4976bd4..4e0eb1d 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -44,17 +44,19 @@
// Otherwise we can only handle string literals.
StringLiteral *SL = dyn_cast<StringLiteral>(Init);
if (SL == 0) return 0;
-
+
+ QualType ElemTy = Context.getCanonicalType(AT->getElementType());
// char array can be initialized with a narrow string.
// Only allow char x[] = "foo"; not char x[] = L"foo";
if (!SL->isWide())
- return AT->getElementType()->isCharType() ? Init : 0;
+ return ElemTy->isCharType() ? Init : 0;
- // wchar_t array can be initialized with a wide string: C99 6.7.8p15:
- // "An array with element type compatible with wchar_t may be initialized by a
- // wide string literal, optionally enclosed in braces."
- if (Context.typesAreCompatible(Context.getWCharType(), AT->getElementType()))
- // Only allow wchar_t x[] = L"foo"; not wchar_t x[] = "foo";
+ // wchar_t array can be initialized with a wide string: C99 6.7.8p15 (with
+ // correction from DR343): "An array with element type compatible with a
+ // qualified or unqualified version of wchar_t may be initialized by a wide
+ // string literal, optionally enclosed in braces."
+ if (Context.typesAreCompatible(Context.getWCharType(),
+ ElemTy.getUnqualifiedType()))
return Init;
return 0;
diff --git a/test/Sema/init.c b/test/Sema/init.c
index 7938ec5..1cbcbb7 100644
--- a/test/Sema/init.c
+++ b/test/Sema/init.c
@@ -1,5 +1,6 @@
// RUN: clang-cc %s -verify -fsyntax-only
+#include <stddef.h>
#include <stdint.h>
typedef void (* fp)(void);
@@ -122,3 +123,6 @@
uintptr_t ptrasintadd1 = (uintptr_t)&a - 4;
uintptr_t ptrasintadd2 = (uintptr_t)&a + 4;
uintptr_t ptrasintadd3 = 4 + (uintptr_t)&a;
+
+// PR4285
+const wchar_t widestr[] = L"asdf";