Re: [PATCH v3 09/10] abspath: convert absolute_path() to strbuf

On Mon, Jul 28, 2014 at 08:33:55PM +0200, René Scharfe wrote:

 const char *absolute_path(const char *path)
 {
-	static char buf[PATH_MAX + 1];
-
-	if (!*path) {
-		die("The empty string is not a valid path");
-	} else if (is_absolute_path(path)) {
-		if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
-			die("Too long path: %.*s", 60, path);
-	} else {
-		size_t len;
-		const char *fmt;
-		const char *cwd = get_pwd_cwd();
-		if (!cwd)
-			die_errno("Cannot determine the current working directory");
-		len = strlen(cwd);
-		fmt = (len > 0 && is_dir_sep(cwd[len - 1])) ? "%s%s" : "%s/%s";
-		if (snprintf(buf, PATH_MAX, fmt, cwd, path) >= PATH_MAX)
-			die("Too long path: %.*s", 60, path);
-	}
-	return buf;
+	static struct strbuf sb;
+	strbuf_init(&sb, 0);
+	strbuf_add_absolute_path(&sb, path);
+	return sb.buf;
 }

Is it right to strbuf_init here? That means that we are throwing away
the old buffer for each call. I would think you want instead:

  static struct strbuf sb = STRBUF_INIT;
  strbuf_reset(&sb);
  ...

-Peff