typesafe_cb: fix up (and test!) cast_if_any.

[ccan] / ccan / typesafe_cb / test / compile_ok-cast_if_any.c

diff --git a/ccan/typesafe_cb/test/compile_ok-cast_if_any.c b/ccan/typesafe_cb/test/compile_ok-cast_if_any.c
new file mode 100644 (file)
index 0000000..2955f60
--- /dev/null
+++ b/ccan/typesafe_cb/test/compile_ok-cast_if_any.c
@@ -0,0 +1,38 @@
+#include <ccan/typesafe_cb/typesafe_cb.h>
+#include <stdlib.h>
+
+struct foo {
+       int x;
+};
+
+struct bar {
+       int x;
+};
+
+struct baz {
+       int x;
+};
+
+struct any {
+       int x;
+};
+
+static void take_any(struct any *any)
+{
+}
+
+int main(int argc, char *argv[])
+{
+       struct foo *foo = NULL;
+       struct bar *bar = NULL;
+       struct baz *baz = NULL;
+       struct other *arg = NULL;
+
+       take_any(cast_if_any(struct any *, arg, foo,
+                            struct foo *, struct bar *, struct baz *));
+       take_any(cast_if_any(struct any *, arg, bar,
+                            struct foo *, struct bar *, struct baz *));
+       take_any(cast_if_any(struct any *, arg, baz,
+                            struct foo *, struct bar *, struct baz *));
+       return 0;
+}