From: Wolfgang Müller Date: Mon, 17 May 2021 08:02:42 +0000 (+0200) Subject: rev-parse: fix segfault with missing --path-format argument X-Git-Tag: v2.32.0-rc1~3^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=99fc555188681caeedc983b9fc982d6dc8ee2a8c;p=thirdparty%2Fgit.git 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 Signed-off-by: Junio C Hamano --- diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c 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")) { diff --git a/t/t1500-rev-parse.sh b/t/t1500-rev-parse.sh 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 &&