commit 070ac3433b0ebefd6dc6cd49707fcfa1421b9e67
author Christian Brabandt <cb@256bit.org> Thu Sep 09 12:12:03 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Sep 09 12:12:03 2021 +0200
tree 025290f8278a526d4842fbf6ceabbe20a927c41c
parent 072f1c68884a1e2d468a0f39e27fc28168fb4b03

patch 8.2.3418: garbage collection while evaluating may cause trouble

Problem:    Garbage collection while evaluating may cause trouble.
Solution:   Disable garbage collection while evaluating an expression.
            (Christian Brabandt, issue #8848)

src/eval.c

diff --git a/src/eval.c b/src/eval.c
index 6b3d78a..aceba5e 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -561,16 +561,19 @@
     char_u	*retval;
     funccal_entry_T funccal_entry;
     int		save_sc_version = current_sctx.sc_version;
+    int		save_garbage = may_garbage_collect;
 
     current_sctx.sc_version = 1;
     save_funccal(&funccal_entry);
     if (use_sandbox)
 	++sandbox;
     ++textwinlock;
+    may_garbage_collect = FALSE;
     retval = eval_to_string(arg, FALSE);
     if (use_sandbox)
 	--sandbox;
     --textwinlock;
+    may_garbage_collect = save_garbage;
     restore_funccal();
     current_sctx.sc_version = save_sc_version;
     return retval;