From: Eli Zaretskii <eliz@gnu.org>
Date: Sun, 13 Nov 2022 08:51:42 +0000 (+0200)
Subject: Fix crash on MS-Windows due to memory-allocation problem in treesit.c
X-Git-Tag: emacs-29.0.90~1675
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=3a5c4bdc0c079f72bad98e01f70343ba9e9b0043;p=emacs.git

Fix crash on MS-Windows due to memory-allocation problem in treesit.c

* src/treesit.c (treesit_load_language): Use 'xstrdup'/'xfree'
instead of 'strdup'/'free', to prevent crashes on MS-Windows,
where we must use our own implementation of 'malloc'/'free',
whereas 'strdup' uses the default implementation in the MS-Windows
C runtime library.
---

diff --git a/src/treesit.c b/src/treesit.c
index 854d7754f0a..86328ae03e9 100644
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -578,12 +578,12 @@ treesit_load_language (Lisp_Object language_symbol,
   /* Load TSLanguage.  */
   dynlib_error ();
   TSLanguage *(*langfn) (void);
-  char *c_name = strdup (SSDATA (base_name));
+  char *c_name = xstrdup (SSDATA (base_name));
   treesit_symbol_to_c_name (c_name);
   if (found_override)
     c_name = SSDATA (override_c_name);
   langfn = dynlib_sym (handle, c_name);
-  free (c_name);
+  xfree (c_name);
   error = dynlib_error ();
   if (error != NULL)
     {