Warn about non-standard format strings (pr12017)
This adds the -Wformat-non-standard flag (off by default,
enabled by -pedantic), which warns about non-standard
things in format strings (such as the 'q' length modifier,
the 'S' conversion specifier, etc.)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151154 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/format-strings.cpp b/test/SemaCXX/format-strings.cpp
index 74fc7a7..314617d 100644
--- a/test/SemaCXX/format-strings.cpp
+++ b/test/SemaCXX/format-strings.cpp
@@ -9,8 +9,7 @@
}
void f(char **sp, float *fp) {
- // TODO: Warn that the 'a' length modifier is an extension.
- scanf("%as", sp);
+ scanf("%as", sp); // expected-warning{{'a' is a non-standard length modifier}}
// TODO: Warn that the 'a' conversion specifier is a C++11 feature.
printf("%a", 1.0);