Update on format attribute handling.

- Remove the printf0 special handling as we treat it as printf anyway.
- Perform basic checks (non-literal, empty) for all formats and not only printf/scanf.

llvm-svn: 149236

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/test/SemaObjC/format-strings-objc.m b/clang/test/SemaObjC/format-strings-objc.m
index b0c87fe243d..e130b1803fd 100644
--- a/clang/test/SemaObjC/format-strings-objc.m
+++ b/clang/test/SemaObjC/format-strings-objc.m
@@ -97,7 +97,7 @@ NSString *test_literal_propagation(void) {
   printf(s2); // expected-warning {{more '%' conversions than data arguments}}
 
   const char * const s3 = (const char *)0;
-  printf(s3); // expected-warning {{format string is not a string literal}}
+  printf(s3); // no-warning (NULL is a valid format string)
 
   NSString * const ns1 = @"constant string %s"; // expected-note {{format string is defined here}}
   NSLog(ns1); // expected-warning {{more '%' conversions than data arguments}}