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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 /core/object.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 'core/object.cpp')
| -rw-r--r-- | core/object.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/core/object.cpp b/core/object.cpp index 928e9bb978..5e6c809f7a 100644 --- a/core/object.cpp +++ b/core/object.cpp @@ -654,7 +654,7 @@ void Object::call_multilevel(const StringName &p_method, const Variant **p_args, if (p_method == CoreStringNames::get_singleton()->_free) { #ifdef DEBUG_ENABLED - if (cast_to<Reference>()) { + if (Object::cast_to<Reference>(this)) { ERR_EXPLAIN("Can't 'free' a reference."); ERR_FAIL(); return; @@ -900,7 +900,7 @@ Variant Object::call(const StringName &p_method, const Variant **p_args, int p_a r_error.error = Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; return Variant(); } - if (cast_to<Reference>()) { + if (Object::cast_to<Reference>(this)) { r_error.argument = 0; r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD; ERR_EXPLAIN("Can't 'free' a reference."); |