patch 8.2.4901: NULL pointer access when using invalid pattern
Problem: NULL pointer access when using invalid pattern.
Solution: Check for failed regexp program.
diff --git a/src/testdir/test_buffer.vim b/src/testdir/test_buffer.vim
index fc391dc..aea3995 100644
--- a/src/testdir/test_buffer.vim
+++ b/src/testdir/test_buffer.vim
@@ -410,6 +410,13 @@
set shellslash&
endfunc
+" this was using a NULL pointer after failing to use the pattern
+func Test_buf_pattern_invalid()
+ vsplit 0000000
+ silent! buf [0--]\&\zs*\zs*e
+ bwipe!
+endfunc
+
" Test for the 'maxmem' and 'maxmemtot' options
func Test_buffer_maxmem()
" use 1KB per buffer and 2KB for all the buffers