rev-parse: fix segfault with missing --path-format argument
Calling "git rev-parse --path-format" without an argument segfaults instead of giving an error message. Commit fac60b8925 (rev-parse: add option for absolute or relative path formatting, 2020-12-13) added the argument parsing code but forgot to handle NULL. Returning an error makes sense here because there is no default value we could use. Add a test case to verify. Signed-off-by: Wolfgang Müller <wolf@oriole.systems> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Wolfgang Müller committed
May 17, 2021 at 10:02 UTC
99fc555188681caeedc983b9fc982d6dc8ee2a8c
2 files changed
+6
builtin/rev-parse.c
+2
index 85bad9052e..7af8dab8bc 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -759,6 +759,8 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
continue;
}
if (opt_with_value(arg, "--path-format", &arg)) {
+ if (!arg)
+ die("--path-format requires an argument");
if (!strcmp(arg, "absolute")) {
format = FORMAT_CANONICAL;
} else if (!strcmp(arg, "relative")) {
t/t1500-rev-parse.sh
+4
index deae916707..1c2df08333 100755
--- a/t/t1500-rev-parse.sh
+++ b/t/t1500-rev-parse.sh
@@ -146,6 +146,10 @@ test_expect_success '--path-format can change in the middle of the command line'
test_cmp expect actual
'
+test_expect_success '--path-format does not segfault without an argument' '
+ test_must_fail git rev-parse --path-format
+'
+
test_expect_success 'git-common-dir from worktree root' '
echo .git >expect &&
git rev-parse --git-common-dir >actual &&