Merge branch 'ps/leakfixes-part-10' into ps/bisect-double-free-fix

* ps/leakfixes-part-10: (27 commits)
  t: remove TEST_PASSES_SANITIZE_LEAK annotations
  test-lib: unconditionally enable leak checking
  t: remove unneeded !SANITIZE_LEAK prerequisites
  t: mark some tests as leak free
  t5601: work around leak sanitizer issue
  git-compat-util: drop now-unused `UNLEAK()` macro
  global: drop `UNLEAK()` annotation
  t/helper: fix leaking commit graph in "read-graph" subcommand
  builtin/branch: fix leaking sorting options
  builtin/init-db: fix leaking directory paths
  builtin/help: fix leaks in `check_git_cmd()`
  help: fix leaking return value from `help_unknown_cmd()`
  help: fix leaking `struct cmdnames`
  help: refactor to not use globals for reading config
  builtin/sparse-checkout: fix leaking sanitized patterns
  split-index: fix memory leak in `move_cache_to_base_index()`
  git: refactor builtin handling to use a `struct strvec`
  git: refactor alias handling to use a `struct strvec`
  strvec: introduce new `strvec_splice()` function
  line-log: fix leak when rewriting commit parents
  ...

1 files changed, 19 insertions, 0 deletions

diff --git a/strvec.c b/strvec.c
index f712070f57..d1cf4e2496 100644
--- a/strvec.c
+++ b/strvec.c
@@ -56,6 +56,25 @@ void strvec_pushv(struct strvec *array, const char **items)
 		strvec_push(array, *items);
 }
 
+void strvec_splice(struct strvec *array, size_t idx, size_t len,
+		   const char **replacement, size_t replacement_len)
+{
+	if (idx + len > array->nr)
+		BUG("range outside of array boundary");
+	if (replacement_len > len)
+		ALLOC_GROW(array->v, array->nr + (replacement_len - len) + 1,
+			   array->alloc);
+	for (size_t i = 0; i < len; i++)
+		free((char *)array->v[idx + i]);
+	if (replacement_len != len) {
+		memmove(array->v + idx + replacement_len, array->v + idx + len,
+			(array->nr - idx - len + 1) * sizeof(char *));
+		array->nr += (replacement_len - len);
+	}
+	for (size_t i = 0; i < replacement_len; i++)
+		array->v[idx + i] = xstrdup(replacement[i]);
+}
+
 const char *strvec_replace(struct strvec *array, size_t idx, const char *replacement)
 {
 	char *to_free;