cast: fix cast of void * when we don't have GCC features.

[ccan] / ccan / cast / test / compile_ok-cast_void.c

diff --git a/ccan/cast/test/compile_ok-cast_void.c b/ccan/cast/test/compile_ok-cast_void.c
new file mode 100644 (file)
index 0000000..c649d28
--- /dev/null
+++ b/ccan/cast/test/compile_ok-cast_void.c
@@ -0,0 +1,12 @@
+#include <ccan/cast/cast.h>
+
+static void *remove_void(const void *p)
+{
+       return cast_const(void *, p);
+}
+
+int main(void)
+{
+       void *p = remove_void("foo");
+       return !p;
+}