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bug#18699: 25.0.50; Windows 7: Odd length text property list
From: |
Eli Zaretskii |
Subject: |
bug#18699: 25.0.50; Windows 7: Odd length text property list |
Date: |
Mon, 13 Oct 2014 23:25:16 +0300 |
> From: oscarfv@telefonica.net (Óscar Fuentes)
> Cc: Eli Zaretskii <eliz@gnu.org>, 18699@debbugs.gnu.org
> Date: Mon, 13 Oct 2014 21:39:33 +0200
>
> Ken Brown <kbrown@cornell.edu> writes:
>
> > Right. And it's *not* about the processor. gcc running under 32-bit
> > Cygwin will not define __x86_64__, regardless of the processor.
>
> It is about the *target* processor of the compiler. Obviously if you
> target x86 then __x86_64__ is expected to be undefined, regardless of
> the *host* processor.
>
> OTOH if you are saying that Cygwin does not define __x86_64__ when you
> are cross-compiling to a x86_64 target on a x86 host, I'll consider that
> a bug.
>
> My understanding now is that the __x86_64__ test is there because Cygwin
> does not define _WIN64.
A 64-bit build on Windows, whether a Cygwin build or a MinGW64 build,
doesn't need the force_align_arg_pointer, since the 64-bit ABI
requires the 8-byte alignment. The __x86_64__ is there to exclude the
64-bit Cygwin build. If it can also exclude the MinGW64 build, we
don't need any MinGW64-specific symbols there.
> Eli, both MinGW and MinGW-w64 compilers support sjlj and Dwarf exception
> methods on x86.
But what is the default one? That's what's important.
> And since when we do care about C++ here? ;-)
At least the DWARF2-based exceptions machinery comes into play in C
programs as well, see the few Emacs crashes we had with libraries
linked against the libgcc DLL.
- bug#18699: 25.0.50; Windows 7: Odd length text property list, (continued)
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Óscar Fuentes, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Eli Zaretskii, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Óscar Fuentes, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Eli Zaretskii, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Ken Brown, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Óscar Fuentes, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list,
Eli Zaretskii <=
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Óscar Fuentes, 2014/10/13
- bug#18699: 25.0.50; Windows 7: Odd length text property list, Eli Zaretskii, 2014/10/14