X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fstr%2Ftest%2Fcompile_fail-isxdigit.c;h=ea4d5269add225115a436092fc8184e3a45151a0;hp=6a7377fd6d16862a7efad1b90a9b2bbd5c80123f;hb=HEAD;hpb=ecea073699c60fd5aab9e3955f59a7042d637b68

diff --git a/ccan/str/test/compile_fail-isxdigit.c b/ccan/str/test/compile_fail-isxdigit.c
index 6a7377fd..ea4d5269 100644
--- a/ccan/str/test/compile_fail-isxdigit.c
+++ b/ccan/str/test/compile_fail-isxdigit.c
@@ -3,6 +3,7 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
 #if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF
 #error We need typeof to check isxdigit.
@@ -15,8 +16,7 @@ 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
 
 	return isxdigit(c);