difftool --no-index: error out on --dir-diff (and don't crash)

diff --git a/t/helper/test-sigchain.c b/t/helper/test-sigchain.c
index b71edbd4429184b59b4bd1355d5cfb53970a1876..d013bccddaebd9c7fb0eb4b4c4e1be0643f82260 100644 (file)
--- a/t/helper/test-sigchain.c
+++ b/t/helper/test-sigchain.c
@@ -1,3 +1,4 @@
+#include "test-tool.h"
 #include "cache.h"
 #include "sigchain.h"
 
@@ -13,7 +14,8 @@ X(two)
 X(three)
 #undef X
 
-int cmd_main(int argc, const char **argv) {
+int cmd__sigchain(int argc, const char **argv)
+{
        sigchain_push(SIGTERM, one);
        sigchain_push(SIGTERM, two);
        sigchain_push(SIGTERM, three);