Merge branch 'jk/submodule-init-segv-fix'

Fix a segv in 'submodule init' when url is not given for a submodule.

* jk/submodule-init-segv-fix:
submodule_init: die cleanly on submodules without url defined

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 36e4231821c0acbb6fe21948c752d4ee7c96405d..566a5b6a6f8937742e83577918a94f0dcb20c66c 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -376,12 +376,12 @@ static void init_submodule(const char *path, const char *prefix, int quiet)
        strbuf_reset(&sb);
        strbuf_addf(&sb, "submodule.%s.url", sub->name);
        if (git_config_get_string(sb.buf, &url)) {
-               url = xstrdup(sub->url);
-
-               if (!url)
+               if (!sub->url)
                        die(_("No url found for submodule path '%s' in .gitmodules"),
                                displaypath);
 
+               url = xstrdup(sub->url);
+
                /* Possibly a url relative to parent */
                if (starts_with_dot_dot_slash(url) ||
                    starts_with_dot_slash(url)) {

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index c2706fe4723778b68b9673fd85267ea475f791f2..1b8f1dbd3a3d8a59a74888155d36d0d49e94cb64 100755 (executable)
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -38,6 +38,14 @@ test_expect_success 'submodule update aborts on missing .gitmodules file' '
        test_i18ngrep "Submodule path .sub. not initialized" actual
 '
 
+test_expect_success 'submodule update aborts on missing gitmodules url' '
+       test_when_finished "git update-index --remove sub" &&
+       git update-index --add --cacheinfo 160000,$(git rev-parse HEAD),sub &&
+       test_when_finished "rm -f .gitmodules" &&
+       git config -f .gitmodules submodule.s.path sub &&
+       test_must_fail git submodule init
+'
+
 test_expect_success 'configuration parsing' '
        test_when_finished "rm -f .gitmodules" &&
        cat >.gitmodules <<-\EOF &&