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diff src/eval.c @ 31626:f5bb69a83d8e v9.0.1145

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patch 9.0.1145: invalid memory access with recursive substitute expression Commit: https://github.com/vim/vim/commit/3ac1d97a1d9353490493d30088256360435f7731 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 4 17:17:54 2023 +0000 patch 9.0.1145: invalid memory access with recursive substitute expression Problem: Invalid memory access with recursive substitute expression. Solution: Check the return value of vim_regsub().
author Bram Moolenaar <Bram@vim.org>
date Wed, 04 Jan 2023 18:30:03 +0100
parents 53c3df37a2b0
children d19377e0a0b4
line wrap: on
line diff
--- a/src/eval.c
+++ b/src/eval.c
@@ -7312,6 +7312,11 @@ do_string_sub(
 	     * - The text after the match.
 	     */
 	    sublen = vim_regsub(&regmatch, sub, expr, tail, 0, REGSUB_MAGIC);
+	    if (sublen <= 0)
+	    {
+		ga_clear(&ga);
+		break;
+	    }
 	    if (ga_grow(&ga, (int)((end - tail) + sublen -
 			    (regmatch.endp[0] - regmatch.startp[0]))) == FAIL)
 	    {