X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fstr%2Ftest%2Fcompile_fail-isblank.c;h=f4cb961d740d9dd0bc9b99825a3af51d3d50d848;hb=00e61068e33e7883a2657744514452a32660d461;hp=86a33503dab00fb0f3007f4c5c066030ad602c22;hpb=5c922794aa81cb2a62a034552f6478074b4dda14;p=ccan

diff --git a/ccan/str/test/compile_fail-isblank.c b/ccan/str/test/compile_fail-isblank.c
index 86a33503..f4cb961d 100644
--- a/ccan/str/test/compile_fail-isblank.c
+++ b/ccan/str/test/compile_fail-isblank.c
@@ -4,7 +4,7 @@
 int main(int argc, char *argv[])
 {
 #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 +15,12 @@ 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
 }