Commit Graph

7 Commits

Author SHA1 Message Date
Jeff Walden
b01c238639 Bug 953296 - Implement mozilla::NullptrT as a typedef to use to accept nullptr values. Also add mozilla::IsNullPointer<T>, a trait for detecting *only* true nullptr (emulated nullptr [__null] used by gcc 4.4/4.5 isn't true nullptr). r=ehsan
Generally, if you want a decltype(nullptr)-based overload, you should use SFINAE and IsNullPointer.  (Examples are provided in NullPtr.h comments.)  The problem is NullptrT matches far more than just __null as emulated nullptr for gcc 4.4/4.5 overloading purposes.  This problem is unavoidable without true nullptr.  Currently, the only valid use for NullptrT is believed to be in operator overloads.  All existing nullptr-overloading code has been rewritten to use the appropriate technique for the situation, and MOZ_HAVE_CXX11_NULLPTR is no longer an API.

--HG--
extra : rebase_source : 01abfcb66ae569db7b04a7b53f5cd5fd8151bffd
2014-01-02 17:27:41 -06:00
Ehsan Akhgari
12d0a13b3c Bug 926083 - Only #include Compiler.h in NullPtr.h if needed; r=froydnj 2013-10-15 17:13:39 -04:00
Ms2ger
28a9e7aa20 Bug 896341 - Update include guards and modelines in MFBT; r=Waldo 2013-07-24 09:41:39 +02:00
Chris Peterson
1432379efc Bug 833254 - Fix MFBT's gcc version checks. r=waldo 2013-01-21 19:42:15 -08:00
Chris Peterson
07acbe70d0 Bug 818941 - Fix misspelling of __GXX_EXPERIMENTAL_CXX0X__ macro. r=ehsan 2012-12-06 00:05:26 -08:00
Jeff Muizelaar
424c086cdc Bug 805951. Fix __GNU_MINOR__ typo in NullPtr.h
Pointed out by Chris Peterson.
2012-10-26 16:29:55 -04:00
Jeff Muizelaar
d6345f3cb2 Bug 782647. Move the nullptr workaround macros to MFBT so that it can be shared. r=waldo
This also changes the header to use compiler detection instead of a
configure test. This makes the header more portable because
it doesn't require the configure infrastructure.
2012-09-01 16:16:17 -04:00