1 files changed, 25 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/bug21.c b/REORG.TODO/stdio-common/bug21.c
new file mode 100644
index 0000000000..7a8c6a3542
--- /dev/null
+++ b/REORG.TODO/stdio-common/bug21.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <libc-diag.h>
+
+static int
+do_test (void)
+{
+  static const char buf[] = " ";
+  char *str;
+
+  /* GCC in C99 mode treats %a as the C99 format expecting float *,
+     but glibc with _GNU_SOURCE treats %as as the GNU allocation
+     extension, so resulting in "warning: format '%a' expects argument
+     of type 'float *', but argument 3 has type 'char **'".  This
+     applies to the other %as, %aS and %a[] formats below as well.  */
+  DIAG_PUSH_NEEDS_COMMENT;
+  DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
+  int r = sscanf (buf, "%as", &str);
+  DIAG_POP_NEEDS_COMMENT;
+  printf ("%d %p\n", r, str);
+
+  return r != -1 || str != NULL;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"