commit d00a7fb81aff367c5dd5d86fb3883f1e7a58fed5
author Bram Moolenaar <Bram@vim.org> Mon Mar 08 20:47:14 2021 +0100
committer Bram Moolenaar <Bram@vim.org> Mon Mar 08 20:47:14 2021 +0100
tree 531a70937f9c8806b3f3dce2965140ffe16f8f0a
parent 86c3a2162c2e78b4f0b87b47779cc1452990ee1b

patch 8.2.2579: Vim9: crash in garbagecollect after for loop

Problem:    Vim9: crash in garbagecollect after for loop.
Solution:   Do not set a reference in script item when the name was cleared.
            (closes #7935)

src/evalvars.c

diff --git a/src/evalvars.c b/src/evalvars.c
index 22d39a7..eac66b2 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -319,7 +319,8 @@
 	{
 	    svar_T    *sv = ((svar_T *)si->sn_var_vals.ga_data) + idx;
 
-	    abort = abort || set_ref_in_item(sv->sv_tv, copyID, NULL, NULL);
+	    if (sv->sv_name != NULL)
+		abort = abort || set_ref_in_item(sv->sv_tv, copyID, NULL, NULL);
 	}
     }