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Subject:	Re: [ANNOUNCEMENT] [Updated] mingw64-{i686,x86_64} binutils, gcc (Test)
To:	cygwin AT cygwin DOT com
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From: JonY <10walls AT gmail DOT com>
To: cygwin AT cygwin DOT com
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Subject: Re: [ANNOUNCEMENT] [Updated] mingw64-{i686,x86_64} binutils, gcc
 (Test)
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On 09/25/2017 06:33 PM, Steven Penny wrote:
> On Mon, 25 Sep 2017 14:17:28, JonY wrote:
>> You can actually use Cygwin gdb to debug and see what went wrong,
>> assuming the debug symbols are around.
>>
>> Sorry if I'm not much help, kind of busy these days.
>=20
> New command:
>=20
> x86_64-w64-mingw32-g++ -g -static -o z z.cpp
>=20
> Output:
>=20
> (gdb) run
> Starting program: /tmp/z [New Thread 5956.0xfe4]
> Program received signal SIGSEGV, Segmentation fault.
> std::ostream::sentry::sentry (this=3Dthis AT entry=3D0x22fd90, __os=3D...)
> =C2=A0at /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/
> =C2=A0mingw64-x86_64-gcc-6.3.0-1.x86_64/src/gcc-6.3.0/libstdc++-v3/includ=
e/bits/
> =C2=A0ostream.tcc:51
> 51 /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/
> =C2=A0mingw64-x86_64-gcc-6.3.0-1.x86_64/src/gcc-6.3.0/libstdc++-v3/includ=
e/bits/
> =C2=A0ostream.tcc: No such file or directory.
> (gdb) backtrace
> #0=C2=A0 std::ostream::sentry::sentry (this=3Dthis AT entry=3D0x22fd90, __os=
=3D...)
> =C2=A0=C2=A0 at /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/
> =C2=A0=C2=A0
> mingw64-x86_64-gcc-6.3.0-1.x86_64/src/gcc-6.3.0/libstdc++-v3/include/bits/
> =C2=A0=C2=A0 ostream.tcc:51
> #1=C2=A0 0x000000000049ece9 in std::__ostream_insert<char,
> std::char_traits<char> >
> =C2=A0(__out=3D..., =C2=A0__s=3D__s AT entry=3D0x4ab031 <std::piecewise_cons=
truct+1> "cout
> test\n", __n=3D10)
> =C2=A0at /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/
> =C2=A0mingw64-x86_64-gcc-6.3.0-1.x86_64/src/gcc-6.3.0/libstdc++-v3/includ=
e/bits/
> =C2=A0ostream_insert.h:82
> #2=C2=A0 0x00000000004a3547 in std::operator<< <std::char_traits<char> > (
> =C2=A0__out=3D..., __s=3D0x4ab031 <std::piecewise_construct+1> "cout test=
\n")
> =C2=A0at /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/
> =C2=A0mingw64-x86_64-gcc-6.3.0-1.x86_64/src/gcc-6.3.0/libstdc++-v3/includ=
e/std/
> =C2=A0ostream:561
> #3=C2=A0 0x00000000004015e0 in main () at z.cpp:3
>=20

Looks like the ostream is not properly initialized, all the C++
constructors involved makes it even more messy to debug.



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