[Bug 17031] popen not connecting to stdin / stdout correctly

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=17031


Dan Kegel <dank at kegel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|-unknown                    |msvcrt
     Ever Confirmed|0                           |1




--- Comment #6 from Dan Kegel <dank at kegel.com>  2009-01-19 17:57:58 ---
OK, so: to reproduce:

0. compile the popen test using mingw32,
    sudo apt-get install mingw32
    i586-mingw32msvc-gcc popen.c
1. install msys and mingw from http://mingw.org
2. cd .wine/drive_c/msys/1.0; wine cmd /c msys.bat
3. in the rxvt window that starts up, run the a.exe compiled in step 0
The stack dump shows up in the rxvt window.
The crash occurs because popen returns NULL.

To learn more, I did WINEDEBUG=+process,+relay ./a.out in the rxvt window;
that caused debug output to come out nicely in the shell where I
had started msysm.  The log seems to show that 
popen() is passing the commandline to cmd.exe, which doesn't know
what to make of it, and can't execute the requested command.

I tried changing the test to use
    f = popen("echo world", "r");
and that seemed to make more sense in the +process log,
  trace:process:CreateProcessW app L"C:\\windows\\system32\\cmd.exe" cmdline
L"C:\\windows\\system32\\cmd.exe /c echo world"
but popen still returns null.

At this point I realized that the popen in question is msvcrt's.
I'll attach the +relay,+process,+msvcrt log, which shows
the popen failure.  Running with "winetricks vcrun6"
and then overriding msvcrt lets my modified test program
popen("echo hello") properly, so this part looks like a bona fide
msvcrt wine bug.


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