Format string warnings: don't a.k.a. wchar_t with wchar_t.

This fixes the case where Clang would output:
 error: format specifies type 'wchar_t *' (aka 'wchar_t *')

ArgTypeResult::getRepresentativeTypeName needs to take into account
that wchar_t can be a built-in type (as opposed to in C, where it is a
typedef).

llvm-svn: 149387

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/format-strings.cpp b/clang/test/SemaCXX/format-strings.cpp
index 2011a71b481..4f5b74d170d 100644
--- a/clang/test/SemaCXX/format-strings.cpp
+++ b/clang/test/SemaCXX/format-strings.cpp
@@ -13,3 +13,7 @@ void f(char **sp, float *fp) {
   printf("%a", 1.0);
   scanf("%afoobar", fp);
 }
+
+void g() {
+  printf("%ls", "foo"); // expected-warning{{format specifies type 'wchar_t *' but the argument has type 'const char *'}}
+}