***BOGO*** Re: [Mingw-users] Test program crashes with g++ 4.2.1-dw2 using libstdc++_s

[Lothar May <mingw@xxxxxxxxxxxx>]

Hi again,

OK just after sending this I finally solved it by adding -D_DLL, but why 
does it link at all without?

Regards,

Lothar

Lothar May wrote:
> Hi,
> 
> I've been testing mingw-g++ 4.2.1-dw2 on Windows XP as non-admin user 
> using the dynamic runtime libraries. I renamed g++-dw2.exe to g++.exe 
> and gcc-dw2.exe to gcc.exe.
> 
> D:\Path with spaces\dev\workspace\test>g++ -v
> Using built-in specs.
> Target: mingw32
> Configured with: ../gcc-4.2.1-2-src/configure --with-gcc 
> --enable-libgomp --host
> =mingw32 --build=mingw32 --target=mingw32 --program-suffix=-dw2 
> --with-arch=i486
>   --with-tune=generic --disable-werror --prefix=/mingw 
> --with-local-prefix=/mingw
>   --enable-threads --disable-nls 
> --enable-languages=c,c++,fortran,objc,obj-c++,ad
> a --disable-win32-registry --disable-sjlj-exceptions 
> --enable-libstdcxx-debug --
> enable-cxx-flags=-fno-function-sections -fno-data-sections 
> --enable-version-spec
> ific-runtime-libs --disable-bootstrap
> Thread model: win32
> gcc version 4.2.1-dw2 (mingw32-2)
> 
> I ran across the missing libgcc_s.a and solved this problem:
> http://lists-archives.org/mingw-users/07776-g-4-2-1-with-shared-libstdc-not-catchingexceptions.html
> 
> D:\Path with spaces\mingw\bin>pexports libgcc_dw2_1.dll > libgcc_s.def
> D:\Path with spaces\mingw\bin>dlltool -d libgcc_s.def -l libgcc_s.a 
> libgcc_dw2_1.dll
> D:\Path with spaces\dev\mingw\bin>move libgcc_s.a 
> ..\lib\gcc\mingw32\4.2.1-dw2\
> 
> Then I tested a simple hello world program main.cpp which uses iostreams:
> 
> --cut here--
> #include <iostream>
> 
> using namespace std;
> 
> int
> main()
> {
> 	cout << "Test" << endl;
> 	return 0;
> }
> --cut here--
> 
> It compiles/links fine, but it crashes with -lstdc++_s.
> 
> D:\Path with spaces\dev\workspace\test>g++ -shared-libgcc main.cpp 
> -lstdc++_s -o test
> 
> D:\Path with spaces\dev\workspace\test>test
> (crash)
> (I was asked to send a bug report to Microsoft which I did, but I 
> suppose that won't help ;-) )
> 
> D:\Path with spaces\dev\workspace\test>gdb test
> GNU gdb 6.8
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later 
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i686-pc-mingw32"...
> (gdb) run
> Starting program: D:\Path with spaces\dev\workspace\test/test.exe
> [New thread 3604.0xd80]
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x66453f5c in std::ostream::sentry::sentry ()
>     from D:\Path with spaces\dev\workspace\test\libstdc++_dw2_6.dll
> (gdb) bt
> #0  0x66453f5c in std::ostream::sentry::sentry ()
>     from D:\Path with spaces\dev\workspace\test\libstdc++_dw2_6.dll
> #1  0x66470cfb in std::__ostream_insert<char, std::char_traits<char> > ()
>     from D:\Path with spaces\dev\workspace\test\libstdc++_dw2_6.dll
> #2  0x6647269e in std::operator<< <std::char_traits<char> > ()
>     from D:\Path with spaces\dev\workspace\test\libstdc++_dw2_6.dll
> #3  0x00401556 in main ()
> (gdb)
> 
> 
> Other variants work:
> 
> D:\Path with spaces\dev\workspace\test>g++ -shared-libgcc main.cpp -o test
> 
> D:\Path with spaces\dev\workspace\test>test
> Test
> 
> D:\Path with spaces\dev\workspace\test>g++ main.cpp -o test
> 
> D:\Path with spaces\dev\workspace\test>test
> Test
> 
> As the release notes state that version 3.13 of mingw-runtime is 
> required, I retried using this version instead of 3.14, with the same 
> result.
> 
> Any suggestions?
> 
> Best regards,
> 
> Lothar
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
> Don't miss this year's exciting event. There's still time to save $100. 
> Use priority code J8TL2D2. 
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> MinGW-users mailing list
> MinGW-users@xxxxxxxxxxxxxxxxxxxxx
> 
> You may change your MinGW Account Options or unsubscribe at:
> https://lists.sourceforge.net/lists/listinfo/mingw-users
> 


-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
Don't miss this year's exciting event. There's still time to save $100. 
Use priority code J8TL2D2. 
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
MinGW-users mailing list
MinGW-users@xxxxxxxxxxxxxxxxxxxxx

You may change your MinGW Account Options or unsubscribe at:
https://lists.sourceforge.net/lists/listinfo/mingw-users