base: static_assert(expr, msg)

Provide static_assert() macro.  On newer compilers
it tries to use built-in implementation, on older
ones compat one.

The detection does not need to be too strict as there
is always fallback implementation available.

Include <assert.h>, as that is where C1x will provide it.

1 files changed, 2 insertions, 0 deletions

diff --git a/test/compile.c b/test/compile.c
index c715981..a306513 100644
--- a/test/compile.c
+++ b/test/compile.c
@@ -39,6 +39,8 @@ int main(void)
 	struct md5_ctx md5;
 	char buf[128];
 
+	static_assert(sizeof(int) >= 4, "unsupported int size");
+
 	aatree_init(&aatree, NULL, NULL);
 	cbtree = cbtree_create(NULL, NULL, NULL, USUAL_ALLOC);
 	cbtree_destroy(cbtree);