-Wformat-non-iso: warn about positional arguments (pr12017)

This renames the -Wformat-non-standard flag to -Wformat-non-iso,
rewords the current warnings a bit (pointing out that a format string
is not supported by ISO C rather than being "non standard"),
and adds a warning about positional arguments.

llvm-svn: 152403

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/test/SemaCXX/format-strings.cpp b/clang/test/SemaCXX/format-strings.cpp
index 314617d4914..6b0df293537 100644
--- a/clang/test/SemaCXX/format-strings.cpp
+++ b/clang/test/SemaCXX/format-strings.cpp
@@ -9,7 +9,7 @@ extern int vprintf(const char *restrict, va_list);
 }
 
 void f(char **sp, float *fp) {
-  scanf("%as", sp); // expected-warning{{'a' is a non-standard length modifier}}
+  scanf("%as", sp); // expected-warning{{'a' length modifier is not supported by ISO C}}
 
   // TODO: Warn that the 'a' conversion specifier is a C++11 feature.
   printf("%a", 1.0);