[PATCH 2/2] diff: plug leaks in dirstat
From: Junio C Hamano <hidden>
Date: 2023-05-05 21:19:25
Subsystem:
the rest · Maintainer:
Linus Torvalds
The array of dirstat_file contained in the dirstat_dir structure is not freed after the processing ends. Unfortunately, the member that points at the array, .files, is incremented as the gather_dirstat() function recursively walks it, and this needs to be plugged by remembering the beginning of the array before gather_dirstat() mucks with it and freeing it after we are done. We can mark t4047 as leak-free. t4000, which is marked as leak-free, now can exercise dirstat in it, which will happen next. Signed-off-by: Junio C Hamano <redacted> --- diff.c | 17 +++++++++++------ t/t4047-diff-dirstat.sh | 2 ++ 2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/diff.c b/diff.c
index e13d0f8b67..d52db685f7 100644
--- a/diff.c
+++ b/diff.c@@ -2975,13 +2975,18 @@ static void conclude_dirstat(struct diff_options *options, struct dirstat_dir *dir, unsigned long changed) { - /* This can happen even with many files, if everything was renames */ - if (!changed) - return; + struct dirstat_file *to_free = dir->files; + + if (!changed) { + /* This can happen even with many files, if everything was renames */ + ; + } else { + /* Show all directories with more than x% of the changes */ + QSORT(dir->files, dir->nr, dirstat_compare); + gather_dirstat(options, dir, changed, "", 0); + } - /* Show all directories with more than x% of the changes */ - QSORT(dir->files, dir->nr, dirstat_compare); - gather_dirstat(options, dir, changed, "", 0); + free(to_free); } static void show_dirstat(struct diff_options *options)
diff --git a/t/t4047-diff-dirstat.sh b/t/t4047-diff-dirstat.sh
index 7fec2cb9cd..70224c3da1 100755
--- a/t/t4047-diff-dirstat.sh
+++ b/t/t4047-diff-dirstat.sh@@ -1,6 +1,8 @@ #!/bin/sh test_description='diff --dirstat tests' + +TEST_PASSES_SANITIZE_LEAK=true . ./test-lib.sh # set up two commits where the second commit has these files
--
2.40.1-476-g69c786637d