Give string literals const element typesin C++, and cope with the deprecated C++ conversion from a string literal to a pointer-to-non-const-character

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56137 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index 41cd828f01..2ecc357d95 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -498,6 +498,14 @@ bool Type::isCharType() const {
   return false;
 }
 
+bool Type::isWideCharType() const {
+  if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType))
+    return BT->getKind() == BuiltinType::WChar;
+  if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType))
+    return ASQT->getBaseType()->isWideCharType();
+  return false;
+}
+
 /// isSignedIntegerType - Return true if this is an integer type that is
 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..],
 /// an enum decl which has a signed representation, or a vector of signed