convert: fix leaking config strings
In `read_convert_config()`, we end up reading some string values into variables. We don't free any potentially-existing old values though, which will result in a memory leak in case the same key has been defined multiple times. Fix those leaks. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Patrick Steinhardt committed
Aug 1, 2024 at 12:41 UTC
9642479a2b62f7a3f3bf6086c02157c745bb5d74
2 files changed
+10
-3
convert.c
+9
-3
index 61a540e212..92ce04c406 100644
--- a/convert.c
+++ b/convert.c
@@ -1050,14 +1050,20 @@ static int read_convert_config(const char *var, const char *value,
* The command-line will not be interpolated in any way.
*/
- if (!strcmp("smudge", key))
+ if (!strcmp("smudge", key)) {
+ FREE_AND_NULL(drv->smudge);
return git_config_string(&drv->smudge, var, value);
+ }
- if (!strcmp("clean", key))
+ if (!strcmp("clean", key)) {
+ FREE_AND_NULL(drv->clean);
return git_config_string(&drv->clean, var, value);
+ }
- if (!strcmp("process", key))
+ if (!strcmp("process", key)) {
+ FREE_AND_NULL(drv->process);
return git_config_string(&drv->process, var, value);
+ }
if (!strcmp("required", key)) {
drv->required = git_config_bool(var, value);
t/t0021-conversion.sh
+1
index 0b4997022b..eeb2714d9d 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -5,6 +5,7 @@ test_description='blob conversion via gitattributes'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-terminal.sh