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builtin/blame: fix leaking blame entries with --incremental

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When passing `--incremental` to git-blame(1) we exit early by jumping to
the `cleanup` label. But some of the cleanups we perform are handled
between the `goto` and its label, and thus we leak the data.

Move the cleanups after the `cleanup` label. While at it, move the logic
to free the scoreboard's `final_buf` into `cleanup_scoreboard()` and
drop its `const` declaration.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-11-20 14:39:30 +01:00 committed by Junio C Hamano
parent 2664f2a0cb
commit 65a1b7e2bd
4 changed files with 10 additions and 7 deletions
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1
blame.c
View File

@ -2931,6 +2931,7 @@ void setup_blame_bloom_data(struct blame_scoreboard *sb)
void cleanup_scoreboard(struct blame_scoreboard *sb)
{
free(sb->lineno);
free(sb->final_buf);
clear_prio_queue(&sb->commits);
oidset_clear(&sb->ignore_list);

2
blame.h
View File

@ -116,7 +116,7 @@ struct blame_scoreboard {
* Used by many functions to obtain contents of the nth line,
* indexed with scoreboard.lineno[blame_entry.lno].
*/
const char *final_buf;
char *final_buf;
unsigned long final_buf_size;
/* linked list of blames */

12
builtin/blame.c
View File

@ -1216,12 +1216,6 @@ parse_done:
output_option &= ~(OUTPUT_COLOR_LINE | OUTPUT_SHOW_AGE_WITH_COLOR);
output(&sb, output_option);
free((void *)sb.final_buf);
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
free(ent);
ent = e;
}
if (show_stats) {
printf("num read blob: %d\n", sb.num_read_blob);
@ -1230,6 +1224,12 @@ parse_done:
}
cleanup:
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
free(ent);
ent = e;
}
free(path);
cleanup_scoreboard(&sb);
release_revisions(&revs);

2
t/t8005-blame-i18n.sh
View File

@ -1,6 +1,8 @@
#!/bin/sh
test_description='git blame encoding conversion'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
if ! test_have_prereq ICONV