patch 7.4.1137
Problem: Illegal memory access when using :copen and :cclose.
Solution: Avoid that curbuf is invalid. (suggestion by Justin M. Keyes)
Add a test.
diff --git a/src/window.c b/src/window.c
index 95515b5..408c4bd 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2445,6 +2445,10 @@
if (win_valid(win))
win->w_closing = FALSE;
#endif
+ /* Make sure curbuf is valid. It can become invalid if 'bufhidden' is
+ * "wipe". */
+ if (!buf_valid(curbuf))
+ curbuf = firstbuf;
}
if (only_one_window() && win_valid(win) && win->w_buffer == NULL