Add a comment to test to clarify the intention here
Comment is taken from the commit message of r151080, by Jean-Daniel Dupas
llvm-svn: 172332
diff --git a/clang/test/Sema/format-strings.c b/clang/test/Sema/format-strings.c
index 8fb1218..ba12721 100644
--- a/clang/test/Sema/format-strings.c
+++ b/clang/test/Sema/format-strings.c
@@ -58,6 +58,9 @@
printf("%*d", (unsigned) 1, 1); // no-warning
}
+// When calling a non-variadic format function (vprintf, vscanf, NSLogv, ...),
+// warn only if the format string argument is a parameter that is not itself
+// declared as a format string with compatible format.
__attribute__((__format__ (__printf__, 2, 4)))
void check_string_literal2( FILE* fp, const char* s, char *buf, ... ) {
char * b;