2012/6/4 Deniz Sarikaya <daiml...@googlemail.com>
> 2012/6/4 Ruben Van Boxem <vanboxem.ru...@gmail.com>:
> > Op 4 jun. 2012 23:06 schreef "Deniz Sarikaya" <daiml...@googlemail.com>
> het
> > volgende:
> >
> >
> >>
> >> Hello,
> >>
> >> I don't know why, but this scenario crashes for me with gcc 4.7.0
> >> rubenvb on Windows 8 x64:
> >
> > What Windows 8 version. Developer Preview? Consumer Preview? Release
> > Preview?
> Consumer Preview
>
Try the Release Preview. This might just well be an OS bug.
> >
> >
> >> "#include <fstream>
> >> struct Testfile
> >> {
> >> std::fstream t;
> >> }
> >
> > You're missing a semicolon here.
> It's not missing in my cpp file ;)
> >
> >> int main()
> >> {
> >> Testfile t;
> >> }"
> >>
> >> backtrace:
> >>
> >> #0 6FCB8F96 ?? () (??:??)
> >> #1 004013ED __tmainCRTStartup()
> >>
> >>
> (/home/ruben/mingw-w64/toolchain/src/mingw-w64/tags/v2.0.3/mingw-w64-crt/crt/crtexe.c:307)
> >> #2 75C0DE7D ?? () (??:??)
> >> #3 77AE4B54 ?? () (??:??)
> >> #4 77AE4B27 ?? () (??:??)
> >> #5 ?? ?? () (??:??)
> >>
> >> When using "Step Into" with GDB 7.4.1 till it crashes, it stops here:
> >> <fstream>
> >> basic_fstream()
> >> : __iostream_type(), _M_filebuf()
> >> { this->init(&_M_filebuf); }
> >
> > On what line does it crash? What's the value of "this"?
> >
> > What compiler options did you use? It seems some debug info is missing.
> Try
> > adding "-g3" and make sure no "-s" is passed when linking.
> Apparently, this crash only happens with -O123 (not with -Os).
> The exact location changes every time, but its always somewhere in
> fstream in the constructors of fstream classes.
> Adding "-g3" didn't change anything, also there's no "-s".
> The value of "this" is "value has been optimized out".
>
OK, that limits it to these options (listed at -O equivalent -O1):
http://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Optimize-Options.html#Optimize-Options
If you could determine which one, this would be helpful to find the problem.
Heck, it might even be -fomit-frame-pointer, but that's also used to build
the gcc executables themselves. It must be a combination of factors, with
the most likely being a problem with the prerelease Windows.
>
> > Ruben
> >
> >>
> >> Thanks,
> >>
> >>
> >>
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