base64: fix for unsigned chars (e.g. ARM).

[ccan] / ccan / str / test / compile_fail-isalnum.c

diff --git a/ccan/str/test/compile_fail-isalnum.c b/ccan/str/test/compile_fail-isalnum.c
index 930defffa0c231862679e42ddb851655cf5a93a1..5d9895822ccd96442a7b1391d87d558856f13cca 100644 (file)
--- a/ccan/str/test/compile_fail-isalnum.c
+++ b/ccan/str/test/compile_fail-isalnum.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 isalnum.