[cfe-dev] Some MS extensions can't be disabled?

[Douglas Gregor]

On Mar 1, 2010, at 2:32 AM, Andrius Morkūnas wrote:

> Hi,
> 
> I've ran into a weird problem:
> error: declaration does not declare anything
> typedef int __ptr64;
> ^~~~~~~~~~~
> 
> After some looking at the source code I found that __ptr64 is one of the
> Microsoft extensions' keywords, but it isn't disabled (and can't be?) on
> FreeBSD.
> 
> In include/clang/Basic/TokenKinds.def:
> 
> // Microsoft Extension.
> KEYWORD(__declspec                  , KEYALL)
> KEYWORD(__cdecl                     , KEYALL)
> KEYWORD(__stdcall                   , KEYALL)
> KEYWORD(__fastcall                  , KEYALL)
> KEYWORD(__ptr64                     , KEYALL)
> KEYWORD(__w64                       , KEYALL)
> KEYWORD(__forceinline               , KEYALL)
> <...>
> // Microsoft extensions which should be disabled in strict conformance mode
> ALIAS("_asm"         , asm        , KEYMS)
> ALIAS("_cdecl"       , __cdecl    , KEYMS)
> ALIAS("_fastcall"    , __fastcall , KEYMS)
> ALIAS("_stdcall"     , __stdcall  , KEYMS)
> 
> Is there some reason why *all* of MS extensions aren't disabled by default?

I think we might actually see __stdcall/__cdecl/__fastcall out there in code that isn't meant to require -fms-extensions. So, I've switched __ptr64 and __w64 over to -fms-extensions only:

	http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20100301/028176.html

	- Doug