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| author | Hein-Pieter van Braam <hp@tmm.cx> | 2017-08-24 22:58:51 +0200 |
|---|---|---|
| committer | Hein-Pieter van Braam <hp@tmm.cx> | 2017-08-24 23:08:24 +0200 |
| commit | cacced7e507f7603bacc03ae2616e58f0ede122a (patch) | |
| tree | 7af89373e86cd1a7af6ea04e10280084cabb7144 /scene/2d/tile_map.cpp | |
| parent | 4aa2c18cb428ffde05c67987926736a9ca62703b (diff) | |
| download | redot-engine-cacced7e507f7603bacc03ae2616e58f0ede122a.tar.gz | |
Convert Object::cast_to() to the static version
Currently we rely on some undefined behavior when Object->cast_to() gets
called with a Null pointer. This used to work fine with GCC < 6 but
newer versions of GCC remove all codepaths in which the this pointer is
Null. However, the non-static cast_to() was supposed to be null safe.
This patch makes cast_to() Null safe and removes the now redundant Null
checks where they existed.
It is explained in this article: https://www.viva64.com/en/b/0226/
Diffstat (limited to 'scene/2d/tile_map.cpp')
| -rw-r--r-- | scene/2d/tile_map.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/scene/2d/tile_map.cpp b/scene/2d/tile_map.cpp index 5d246e331f..a4a7d5eae8 100644 --- a/scene/2d/tile_map.cpp +++ b/scene/2d/tile_map.cpp @@ -50,12 +50,12 @@ void TileMap::_notification(int p_what) { Node2D *c = this; while (c) { - navigation = c->cast_to<Navigation2D>(); + navigation = Object::cast_to<Navigation2D>(c); if (navigation) { break; } - c = c->get_parent()->cast_to<Node2D>(); + c = Object::cast_to<Node2D>(c->get_parent()); } pending_update = true; |