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merge-file: fix memory leaks on error path

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Fix a memory leak in "merge-file", we need to loop over the "mmfs"
array and free() what we've got so far when we error out. As a result
we can mark a test as passing with SANITIZE=leak using
"TEST_PASSES_SANITIZE_LEAK=true".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason
2022-07-01 12:42:56 +02:00
committed by Junio C Hamano
parent 480a0e30a7
commit e72e12cc02
2 changed files with 8 additions and 4 deletions
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10
builtin/merge-file.c
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@ -87,7 +87,8 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
free(fname);
if (ret)
return ret;
goto cleanup;
}
xmp.ancestor = names[1];
@ -95,9 +96,6 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
xmp.file2 = names[2];
ret = xdl_merge(mmfs + 1, mmfs + 0, mmfs + 2, &xmp, &result);
for (i = 0; i < 3; i++)
free(mmfs[i].ptr);
if (ret >= 0) {
const char *filename = argv[0];
char *fpath = prefix_filename(prefix, argv[0]);
@ -118,5 +116,9 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
if (ret > 127)
ret = 127;
cleanup:
for (i = 0; i < 3; i++)
free(mmfs[i].ptr);
return ret;
}