From: Eli Zaretskii <eliz@gnu.org>
Date: Tue, 7 Feb 2023 19:53:05 +0000 (+0200)
Subject: Fix crashes inside 'xfree' called from treesit.c
X-Git-Tag: emacs-29.0.90~473
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=c9ba05af8df;p=emacs.git

Fix crashes inside 'xfree' called from treesit.c

* src/treesit.c (treesit_load_language): Always xstrdup 'c_name',
to avoid crashes inside xfree.  (Bug#61351)
---

diff --git a/src/treesit.c b/src/treesit.c
index 8e772523cc7..b15d44fca01 100644
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -620,7 +620,7 @@ treesit_load_language (Lisp_Object language_symbol,
   char *c_name = xstrdup (SSDATA (base_name));
   treesit_symbol_to_c_name (c_name);
   if (found_override)
-    c_name = SSDATA (override_c_name);
+    c_name = xstrdup (SSDATA (override_c_name));
   langfn = dynlib_sym (handle, c_name);
   xfree (c_name);
   error = dynlib_error ();