diff options
Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h')
| -rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h index afc5e8a9e3..d21d1ffccf 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h +++ b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/StdLibExtras.h @@ -41,6 +41,11 @@ static type& name = *new type arguments #endif +// OBJECT_OFFSETOF: Like the C++ offsetof macro, but you can use it with classes. +// The magic number 0x4000 is insignificant. We use it to avoid using NULL, since +// NULL can cause compiler problems, especially in cases of multiple inheritance. +#define OBJECT_OFFSETOF(class, field) (reinterpret_cast<ptrdiff_t>(&(reinterpret_cast<class*>(0x4000)->field)) - 0x4000) + namespace WTF { /* |