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, 14 insertions, 2 deletions

diff --git a/compat/basename.c b/compat/basename.c
index 96bd9533b4..c33579ef61 100644
--- a/compat/basename.c
+++ b/compat/basename.c
@@ -10,7 +10,13 @@ char *gitbasename (char *path)
 		skip_dos_drive_prefix(&path);
 
 	if (!path || !*path)
-		return ".";
+		/*
+		 * basename(3P) is mis-specified because it returns a
+		 * non-constant pointer even though it is specified to return a
+		 * pointer to internal memory at times. The cast is a result of
+		 * that.
+		 */
+		return (char *) ".";
 
 	for (base = path; *path; path++) {
 		if (!is_dir_sep(*path))
@@ -34,7 +40,13 @@ char *gitdirname(char *path)
 	int dos_drive_prefix;
 
 	if (!p)
-		return ".";
+		/*
+		 * dirname(3P) is mis-specified because it returns a
+		 * non-constant pointer even though it is specified to return a
+		 * pointer to internal memory at times. The cast is a result of
+		 * that.
+		 */
+		return (char *) ".";
 
 	if ((dos_drive_prefix = skip_dos_drive_prefix(&p)) && !*p)
 		goto dot;