asearch: typesafe binary search.

[ccan] / ccan / asearch / test / compile_fail-return-value-const.c

diff --git a/ccan/asearch/test/compile_fail-return-value-const.c b/ccan/asearch/test/compile_fail-return-value-const.c
new file mode 100644 (file)
index 0000000..2edee93
--- /dev/null
+++ b/ccan/asearch/test/compile_fail-return-value-const.c
@@ -0,0 +1,25 @@
+#include <ccan/asearch/asearch.h>
+#include <ccan/array_size/array_size.h>
+#include <string.h>
+
+static int cmp(const char *key, const char *const *elem)
+{
+       return strcmp(key, *elem);
+}
+
+int main(void)
+{
+       const char key[] = "key";
+       const char *elems[] = { "a", "big", "list", "of", "things" };
+
+#ifdef FAIL
+       char **p;
+#if !HAVE_TYPEOF
+#error "Unfortunately we don't fail if no typeof."
+#endif
+#else
+       const char **p;
+#endif
+       p = asearch(key, elems, ARRAY_SIZE(elems), cmp);
+       return p ? 0 : 1;
+}