Merge branch 'ps/no-writable-strings' into jk/imap-send-plug-all-msgs-leak

* ps/no-writable-strings: (46 commits)
  config.mak.dev: enable `-Wwrite-strings` warning
  builtin/merge: always store allocated strings in `pull_twohead`
  builtin/rebase: always store allocated string in `options.strategy`
  builtin/rebase: do not assign default backend to non-constant field
  imap-send: fix leaking memory in `imap_server_conf`
  imap-send: drop global `imap_server_conf` variable
  mailmap: always store allocated strings in mailmap blob
  revision: always store allocated strings in output encoding
  remote-curl: avoid assigning string constant to non-const variable
  send-pack: always allocate receive status
  parse-options: cast long name for OPTION_ALIAS
  http: do not assign string constant to non-const field
  compat/win32: fix const-correctness with string constants
  pretty: add casts for decoration option pointers
  object-file: make `buf` parameter of `index_mem()` a constant
  object-file: mark cached object buffers as const
  ident: add casts for fallback name and GECOS
  entry: refactor how we remove items for delayed checkouts
  line-log: always allocate the output prefix
  line-log: stop assigning string constant to file parent buffer
  ...

1 files changed, 9 insertions, 4 deletions

diff --git a/merge-ll.c b/merge-ll.c
index bf1077ae09..180c19df67 100644
--- a/merge-ll.c
+++ b/merge-ll.c
@@ -29,7 +29,7 @@ struct ll_merge_driver {
 	const char *name;
 	const char *description;
 	ll_merge_fn fn;
-	const char *recursive;
+	char *recursive;
 	struct ll_merge_driver *next;
 	char *cmdline;
 };
@@ -268,7 +268,7 @@ static enum ll_merge_result ll_ext_merge(const struct ll_merge_driver *fn,
  * merge.default and merge.driver configuration items
  */
 static struct ll_merge_driver *ll_user_merge, **ll_user_merge_tail;
-static const char *default_ll_merge;
+static char *default_ll_merge;
 
 static int read_merge_config(const char *var, const char *value,
 			     const struct config_context *ctx UNUSED,
@@ -304,8 +304,13 @@ static int read_merge_config(const char *var, const char *value,
 		ll_user_merge_tail = &(fn->next);
 	}
 
-	if (!strcmp("name", key))
-		return git_config_string(&fn->description, var, value);
+	if (!strcmp("name", key)) {
+		/*
+		 * The description is leaking, but that's okay as we want to
+		 * keep around the merge drivers anyway.
+		 */
+		return git_config_string((char **) &fn->description, var, value);
+	}
 
 	if (!strcmp("driver", key)) {
 		if (!value)