Suggest %zu for size_t args to printf.

For PR11152. Make PrintSpecifier::fixType() suggest "%zu" for size_t, etc.
rather than looking at the underlying type and suggesting "%llu" or other
platform-specific length modifiers. Applies to C99 and C++11.

llvm-svn: 142342

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/test/Sema/format-strings-fixit.c b/clang/test/Sema/format-strings-fixit.c
index d03cccb601f..5b2f54a59fa 100644
--- a/clang/test/Sema/format-strings-fixit.c
+++ b/clang/test/Sema/format-strings-fixit.c
@@ -46,6 +46,19 @@ void test() {
   // Perserve the original formatting for unsigned integers.
   unsigned long val = 42;
   printf("%X", val);
+
+  typedef __SIZE_TYPE__ size_t;
+  typedef signed long int ssize_t;
+  typedef __INTMAX_TYPE__ intmax_t;
+  typedef __UINTMAX_TYPE__ uintmax_t;
+  typedef __PTRDIFF_TYPE__ ptrdiff_t;
+
+  // size_t, etc.
+  printf("%c", (size_t) 42);
+  printf("%c", (ssize_t) 42);
+  printf("%c", (intmax_t) 42);
+  printf("%c", (uintmax_t) 42);
+  printf("%c", (ptrdiff_t) 42);
 }
 
 // Validate the fixes...
@@ -68,3 +81,8 @@ void test() {
 // CHECK: printf("%s", "foo");
 // CHECK: printf("%1$p", (void *)0);
 // CHECK: printf("%lX", val);
+// CHECK: printf("%zu", (size_t) 42);
+// CHECK: printf("%zd", (ssize_t) 42);
+// CHECK: printf("%jd", (intmax_t) 42);
+// CHECK: printf("%ju", (uintmax_t) 42);
+// CHECK: printf("%td", (ptrdiff_t) 42);