From: Junio C Hamano <gitster@xxxxxxxxx>
The expansion returned from strbuf_check_branch_ref always starts with
"refs/heads/" by construction, but there is nothing about its name or
advertised API making that obvious. This command is used to process
human-supplied input from the command line and is usually not the
inner loop, so we can spare some cycles to be more defensive. Instead
of hard-coding the offset strlen("refs/heads/") to skip, verify that
the expansion actually starts with refs/heads/.
[jn: split out from a larger patch, added explanation]
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
builtin/check-ref-format.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/builtin/check-ref-format.c b/builtin/check-ref-format.c
index 6c40ff110b..bc67d3f0a8 100644
--- a/builtin/check-ref-format.c
+++ b/builtin/check-ref-format.c
@@ -39,12 +39,14 @@ static char *collapse_slashes(const char *refname)
static int check_ref_format_branch(const char *arg)
{
struct strbuf sb = STRBUF_INIT;
+ const char *name;
int nongit;
setup_git_directory_gently(&nongit);
- if (strbuf_check_branch_ref(&sb, arg))
+ if (strbuf_check_branch_ref(&sb, arg) ||
+ !skip_prefix(sb.buf, "refs/heads/", &name))
die("'%s' is not a valid branch name", arg);
- printf("%s\n", sb.buf + 11);
+ printf("%s\n", name);
strbuf_release(&sb);
return 0;
}
--
2.15.0.rc1.287.g2b38de12cc
