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Convert Object::cast_to() to the static version

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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/
This commit is contained in:
Hein-Pieter van Braam
2017-08-24 22:58:51 +02:00
parent 4aa2c18cb4
commit cacced7e50
185 changed files with 1314 additions and 1508 deletions
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7
editor/plugins/particles_2d_editor_plugin.cpp
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@@ -33,13 +33,10 @@
#include "io/image_loader.h"
#include "scene/3d/particles.h"
#include "scene/gui/separator.h"
void Particles2DEditorPlugin::edit(Object *p_object) {
if (p_object) {
particles = p_object->cast_to<Particles2D>();
} else {
particles = NULL;
}
particles = Object::cast_to<Particles2D>(p_object);
}
bool Particles2DEditorPlugin::handles(Object *p_object) const {