patch 8.1.0695: internal error when using :popupv8.1.0695

Problem:    Internal error when using :popup.
Solution:   When a menu only exists in Terminal mode give an error. (Naruhiko
            Nishino, closes #3765)

1 files changed, 8 insertions, 0 deletions

diff --git a/src/popupmnu.c b/src/popupmnu.c
index 6ef0af92a..962a59a1b 100644
--- a/src/popupmnu.c
+++ b/src/popupmnu.c
@@ -1195,6 +1195,14 @@ pum_show_popupmenu(vimmenu_T *menu)
 		|| (mp->modes & mp->enabled & mode))
 	    ++pum_size;
 
+    // When there are only Terminal mode menus, using "popup Edit" results in
+    // pum_size being zero.
+    if (pum_size <= 0)
+    {
+	EMSG(e_menuothermode);
+	return;
+    }
+
     array = (pumitem_T *)alloc_clear((unsigned)sizeof(pumitem_T) * pum_size);
     if (array == NULL)
 	return;