diff options
Diffstat (limited to 'lib/ccan/cast/test/compile_fail-cast_signed-const.c')
| -rw-r--r-- | lib/ccan/cast/test/compile_fail-cast_signed-const.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/ccan/cast/test/compile_fail-cast_signed-const.c b/lib/ccan/cast/test/compile_fail-cast_signed-const.c new file mode 100644 index 0000000000..9971dc8eb3 --- /dev/null +++ b/lib/ccan/cast/test/compile_fail-cast_signed-const.c @@ -0,0 +1,22 @@ +#include <ccan/cast/cast.h> +#include <stdlib.h> + +int main(int argc, char *argv[]) +{ + unsigned char *uc; +#ifdef FAIL + const +#endif + char + *p = NULL; + + uc = cast_signed(unsigned char *, p); + (void) uc; /* Suppress unused-but-set-variable warning. */ + return 0; +} + +#ifdef FAIL +#if !HAVE_TYPEOF||!HAVE_BUILTIN_CHOOSE_EXPR||!HAVE_BUILTIN_TYPES_COMPATIBLE_P +#error "Unfortunately we don't fail if cast_const can only use size" +#endif +#endif |