commit fd77748df2ba7d5f38aab649cb630374620462d7
author Bram Moolenaar <Bram@vim.org> Wed Aug 12 19:42:01 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Aug 12 19:42:01 2020 +0200
tree 68ca76560bb073e21f773dc1eb85fb6cf0a9fe6b
parent ba60cc45e786166767ca80f3dea6236d993c7971

patch 8.2.1434: Vim9: crash when lambda uses outer function argument

Problem:    Vim9: crash when lambda uses outer function argument.
Solution:   Set the flag that the outer context is used.

src/vim9compile.c

diff --git a/src/vim9compile.c b/src/vim9compile.c
index 87bb0e2..889a5d5 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2135,7 +2135,10 @@
 	if (gen_load)
 	    res = generate_LOAD(cctx, ISN_LOAD, idx, NULL, type);
 	if (gen_load_outer)
+	{
 	    res = generate_LOAD(cctx, ISN_LOADOUTER, idx, NULL, type);
+	    cctx->ctx_outer_used = TRUE;
+	}
     }
 
     *arg = end;