fputs in tp_print crashes under Win32

[Petr Gotthard]

Hello,
my C++ extension crashes under Win32 when the tp_print is called.

It crashes with both Python 2.5.2 and 2.6. The crash occurs in
system32\ntdll.dll, with exception code 0xc0000005.

I found out that this works fine:

int ulonghandle_print(RtiULongHandleObject *v, FILE *fp, int flags)
{
fputc('c', stdout);
return 0;
}

But this causes the error:

int ulonghandle_print(RtiULongHandleObject *v, FILE *fp, int flags)
{
fputc('c', fp); // <-- "fp" instead of "stdout"
return 0;
}

It occurs under Windows (XP SP2) only. Under Linux everything works
fine.


Do you have any idea what could be wrong?

Thanks,
Petr

 

[Gabriel Genellina]

En Wed, 12 Nov 2008 08:58:05 -0200, Petr Gotthard

Hello,
my C++ extension crashes under Win32 when the tp_print is called.

It crashes with both Python 2.5.2 and 2.6. The crash occurs in
system32\ntdll.dll, with exception code 0xc0000005.

I found out that this works fine:

int ulonghandle_print(RtiULongHandleObject *v, FILE *fp, int flags)
{
fputc('c', stdout);
return 0;
}

But this causes the error:

int ulonghandle_print(RtiULongHandleObject *v, FILE *fp, int flags)
{
fputc('c', fp); // <-- "fp" instead of "stdout"
return 0;
}

It occurs under Windows (XP SP2) only. Under Linux everything works
fine.

Short answer: compile your extension with the *same* compiler used to
compile Python itself: Visual Studio 2008 for 2.6, Visual Studio .NET 2003
for 2.5
For the long answer search http://wiki.python.org/moin/