Merge branch 'jk/tighten-alloc' into maint

* jk/tighten-alloc: (23 commits)
  compat/mingw: brown paper bag fix for 50a6c8e
  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
  ...

1 files changed, 3 insertions, 6 deletions

diff --git a/builtin/help.c b/builtin/help.c
index 1cd0c1ee44..3c55ce4563 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -171,12 +171,10 @@ static void exec_man_cmd(const char *cmd, const char *page)
 static void add_man_viewer(const char *name)
 {
 	struct man_viewer_list **p = &man_viewer_list;
-	size_t len = strlen(name);
 
 	while (*p)
 		p = &((*p)->next);
-	*p = xcalloc(1, (sizeof(**p) + len + 1));
-	memcpy((*p)->name, name, len); /* NUL-terminated by xcalloc */
+	FLEX_ALLOC_STR(*p, name, name);
 }
 
 static int supported_man_viewer(const char *name, size_t len)
@@ -190,9 +188,8 @@ static void do_add_man_viewer_info(const char *name,
 				   size_t len,
 				   const char *value)
 {
-	struct man_viewer_info_list *new = xcalloc(1, sizeof(*new) + len + 1);
-
-	memcpy(new->name, name, len); /* NUL-terminated by xcalloc */
+	struct man_viewer_info_list *new;
+	FLEX_ALLOC_MEM(new, name, name, len);
 	new->info = xstrdup(value);
 	new->next = man_viewer_info_list;
 	man_viewer_info_list = new;