2 files changed, 37 insertions, 0 deletions
diff --git a/lib/ccan/compiler/test/compile_fail-printf.c b/lib/ccan/compiler/test/compile_fail-printf.c
new file mode 100644
index 0000000000..8f34ae5a12
--- /dev/null
+++ b/lib/ccan/compiler/test/compile_fail-printf.c
@@ -0,0 +1,22 @@
+#include <ccan/compiler/compiler.h>
+
+static void PRINTF_FMT(2,3) my_printf(int x, const char *fmt, ...)
+{
+}
+
+int main(int argc, char *argv[])
+{
+	unsigned int i = 0;
+
+	my_printf(1, "Not a pointer "
+#ifdef FAIL
+		  "%p",
+#if !HAVE_ATTRIBUTE_PRINTF
+#error "Unfortunately we don't fail if !HAVE_ATTRIBUTE_PRINTF."
+#endif
+#else
+		  "%i",
+#endif
+		  i);
+	return 0;
+}
diff --git a/lib/ccan/compiler/test/run-is_compile_constant.c b/lib/ccan/compiler/test/run-is_compile_constant.c
new file mode 100644
index 0000000000..a66f2e13e6
--- /dev/null
+++ b/lib/ccan/compiler/test/run-is_compile_constant.c
@@ -0,0 +1,15 @@
+#include <ccan/compiler/compiler.h>
+#include <ccan/tap/tap.h>
+
+int main(int argc, char *argv[])
+{
+	plan_tests(2);
+
+	ok1(!IS_COMPILE_CONSTANT(argc));
+#if HAVE_BUILTIN_CONSTANT_P
+	ok1(IS_COMPILE_CONSTANT(7));
+#else
+	pass("If !HAVE_BUILTIN_CONSTANT_P, IS_COMPILE_CONSTANT always false");
+#endif
+	return exit_status();
+}