1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/format/ms_cast-1.c b/gcc/testsuite/gcc.dg/format/ms_cast-1.c
new file mode 100644
index 000000000..08659616e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/format/ms_cast-1.c
@@ -0,0 +1,17 @@
+/* Test for strings cast through integer types: should not be treated
+   as format strings unless the types are of the same width as
+   pointers (intptr_t or similar).  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile { target { *-*-mingw* } } } */
+/* { dg-options "-Wformat" } */
+
+#define USE_SYSTEM_FORMATS
+#include "format.h"
+
+void
+f (int x)
+{
+  printf("%s", x); /* { dg-warning "format" } */
+  printf((char *)(size_t)"%s", x); /* { dg-warning "format" } */
+  printf((char *)(char)"%s", x); /* { dg-warning "cast from pointer to integer of different size" } */
+}