tcon: routines for creating typesafe generic containers

[ccan] / ccan / tcon / test / compile_fail-tcon_cast.c

diff --git a/ccan/tcon/test/compile_fail-tcon_cast.c b/ccan/tcon/test/compile_fail-tcon_cast.c
new file mode 100644 (file)
index 0000000..f80ef42
--- /dev/null
+++ b/ccan/tcon/test/compile_fail-tcon_cast.c
@@ -0,0 +1,29 @@
+#include <ccan/tcon/tcon.h>
+#include <stdlib.h>
+
+struct container {
+       void *p;
+};
+
+struct int_and_charp_container {
+       struct container raw;
+       TCON(int *tc1; char *tc2);
+};
+
+int main(int argc, char *argv[])
+{
+       struct int_and_charp_container icon;
+#ifdef FAIL
+#if !HAVE_TYPEOF
+#error We cannot detect type problems without HAVE_TYPEOF
+#endif
+       char *
+#else
+       int *
+#endif
+               x;
+
+       icon.raw.p = NULL;
+       x = tcon_cast(&icon, tc1, icon.raw.p);
+       return 0;
+}