commit c0e29010f68a0ebe439f9bd78493799c60b7bfd3
author Bram Moolenaar <Bram@vim.org> Sun Sep 27 14:22:48 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Sep 27 14:22:48 2020 +0200
tree de28c56983955b5bdbed61c7b1fe15bb666439c9
parent 8c7ad3631af570f68b2da2658cf966a9a19cb6c4

patch 8.2.1755: Vim9: crash when using invalid heredoc marker

Problem:    Vim9: crash when using invalid heredoc marker. (Dhiraj Mishra)
Solution:   Check for NULL list. (closes #7027)  Fix comment character.

src/vim9compile.c

diff --git a/src/vim9compile.c b/src/vim9compile.c
index 2d64015..832d7d9 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -4632,6 +4632,8 @@
 	eap->getline = exarg_getline;
 	eap->cookie = cctx;
 	l = heredoc_get(eap, op + 3, FALSE);
+	if (l == NULL)
+	    return NULL;
 
 	if (cctx->ctx_skip != SKIP_YES)
 	{