X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;ds=sidebyside;f=ccan%2Fstr%2Ftest%2Fcompile_fail-isblank.c;h=e14b0d7e66ac1a8e0018233c709b7274e182a468;hb=HEAD;hp=86a33503dab00fb0f3007f4c5c066030ad602c22;hpb=ecea073699c60fd5aab9e3955f59a7042d637b68;p=ccan

diff --git a/ccan/str/test/compile_fail-isblank.c b/ccan/str/test/compile_fail-isblank.c
index 86a33503..e14b0d7e 100644
--- a/ccan/str/test/compile_fail-isblank.c
+++ b/ccan/str/test/compile_fail-isblank.c
@@ -3,8 +3,9 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
-#if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF
+#if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF || !HAVE_ISBLANK
 #error We need typeof to check isblank.
 #endif
 	char
@@ -15,9 +16,12 @@ int main(int argc, char *argv[])
 
 #ifdef FAIL
 	/* Fake fail on unsigned char platforms. */
-	c = 255;
-	BUILD_ASSERT(c < 0);
+	BUILD_ASSERT((char)255 < 0);
 #endif
 
+#if HAVE_ISBLANK
 	return isblank(c);
+#else
+	return c;
+#endif
 }