commit 985079c514e9ab85598b7bca019c77d3e42526f5
author Bram Moolenaar <Bram@vim.org> Sat Feb 16 17:07:47 2019 +0100
committer Bram Moolenaar <Bram@vim.org> Sat Feb 16 17:07:47 2019 +0100
tree 5e2dbfc05e6504a9e71d3683f69c215f7eddf0da
parent 6982f42f33b2868e4b9884514cfe8e357b727498

patch 8.1.0934: invalid memory access in search pattern

Problem:    Invalid memory access in search pattern. (Kuang-che Wu)
Solution:   Check for incomplete equivalence class. (closes #3970)

src/regexp.c

diff --git a/src/regexp.c b/src/regexp.c
index f06e15c..30a604b 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -730,7 +730,7 @@
     int		l = 1;
     char_u	*p = *pp;
 
-    if (p[1] == '=')
+    if (p[1] == '=' && p[2] != NUL)
     {
 	if (has_mbyte)
 	    l = (*mb_ptr2len)(p + 2);