Merge branch 'jk/tighten-alloc'

Update various codepaths to avoid manually-counted malloc().

* jk/tighten-alloc: (22 commits)
  ewah: convert to REALLOC_ARRAY, etc
  convert ewah/bitmap code to use xmalloc
  diff_populate_gitlink: use a strbuf
  transport_anonymize_url: use xstrfmt
  git-compat-util: drop mempcpy compat code
  sequencer: simplify memory allocation of get_message
  test-path-utils: fix normalize_path_copy output buffer size
  fetch-pack: simplify add_sought_entry
  fast-import: simplify allocation in start_packfile
  write_untracked_extension: use FLEX_ALLOC helper
  prepare_{git,shell}_cmd: use argv_array
  use st_add and st_mult for allocation size computation
  convert trivial cases to FLEX_ARRAY macros
  use xmallocz to avoid size arithmetic
  convert trivial cases to ALLOC_ARRAY
  convert manual allocations to argv_array
  argv-array: add detach function
  add helpers for allocating flex-array structs
  harden REALLOC_ARRAY and xcalloc against size_t overflow
  tree-diff: catch integer overflow in combine_diff_path allocation
  ...

1 files changed, 2 insertions, 3 deletions

diff --git a/sha1_name.c b/sha1_name.c
index d0f844db8..3acf221f9 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -87,9 +87,8 @@ static void find_short_object_filename(int len, const char *hex_pfx, struct disa
 		 * object databases including our own.
 		 */
 		const char *objdir = get_object_directory();
-		int objdir_len = strlen(objdir);
-		int entlen = objdir_len + 43;
-		fakeent = xmalloc(sizeof(*fakeent) + entlen);
+		size_t objdir_len = strlen(objdir);
+		fakeent = xmalloc(st_add3(sizeof(*fakeent), objdir_len, 43));
 		memcpy(fakeent->base, objdir, objdir_len);
 		fakeent->name = fakeent->base + objdir_len + 1;
 		fakeent->name[-1] = '/';