revision: fix memory leaks when rewriting parents

Both `rewrite_parents()` and `remove_duplicate_parents()` may end up
dropping some parents from a commit without freeing the respective
`struct commit_list` items. This causes a bunch of memory leaks. Plug
these.

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

revision.c

@@ -3250,6 +3250,7 @@ static int remove_duplicate_parents(struct rev_info *revs, struct commit *commit
 		struct commit *parent = p->item;
 		if (parent->object.flags & TMP_MARK) {
 			*pp = p->next;
+			free(p);
 			if (ts)
 				compact_treesame(revs, commit, surviving_parents);
 			continue;
@@ -4005,6 +4006,7 @@ int rewrite_parents(struct rev_info *revs, struct commit *commit,
 			break;
 		case rewrite_one_noparents:
 			*pp = parent->next;
+			free(parent);
 			continue;
 		case rewrite_one_error:
 			return -1;

t/t3427-rebase-subtree.sh

@@ -7,6 +7,7 @@ This test runs git rebase and tests the subtree strategy.
 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-rebase.sh
 

t/t6016-rev-list-graph-simplify-history.sh

@@ -10,6 +10,7 @@ test_description='--graph and simplified history'
 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-log-graph.sh
 

t/t7003-filter-branch.sh

@@ -4,6 +4,7 @@ test_description='git filter-branch'
 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-gpg.sh"
 

t/t9350-fast-export.sh

@@ -7,6 +7,7 @@ test_description='git fast-export'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '

t/t9402-git-cvsserver-refs.sh

@@ -8,6 +8,7 @@ tags, branches and other git refspecs'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
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