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diff src/spell.c @ 30558:8e73ecbee60d v9.0.0614

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patch 9.0.0614: SpellFileMissing autocmd may delete buffer Commit: https://github.com/vim/vim/commit/ef976323e770315b5fca544efb6b2faa25674d15 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 28 11:48:30 2022 +0100 patch 9.0.0614: SpellFileMissing autocmd may delete buffer Problem: SpellFileMissing autocmd may delete buffer. Solution: Disallow deleting the current buffer to avoid using freed memory.
author Bram Moolenaar <Bram@vim.org>
date Wed, 28 Sep 2022 13:00:04 +0200
parents 087c42245022
children c7983f593fa7
line wrap: on
line diff
--- a/src/spell.c
+++ b/src/spell.c
@@ -1568,6 +1568,10 @@ spell_load_lang(char_u *lang)
     sl.sl_slang = NULL;
     sl.sl_nobreak = FALSE;
 
+    // Disallow deleting the current buffer.  Autocommands can do weird things
+    // and cause "lang" to be freed.
+    ++curbuf->b_locked;
+
     // We may retry when no spell file is found for the language, an
     // autocommand may load it then.
     for (round = 1; round <= 2; ++round)
@@ -1621,6 +1625,8 @@ spell_load_lang(char_u *lang)
 	STRCPY(fname_enc + STRLEN(fname_enc) - 3, "add.spl");
 	do_in_runtimepath(fname_enc, DIP_ALL, spell_load_cb, &sl);
     }
+
+    --curbuf->b_locked;
 }
 
 /*