The C runtime library shipped with Visual Studio 2005
performs strict checking of parameters.
In function initsignal() in file
Modules\signalmodule.c, an iteration over all signals
from 1 to NSIG is performed.
The function PyOS_getsig() is called with each of these
integer values. PyOS_getsig() then calls signal() with
the given value which leads to the crash.
According to signal.h from VS2005 only these signals
are allowed:
#define SIGINT 2
#define SIGILL 4
#define SIGABRT_COMPAT 6
#define SIGFPE 8
#define SIGSEGV 11
#define SIGTERM 15
#define SIGBREAK 21
#define SIGABRT 22
A solution would be to restrict the loop in
initsignal() to the above values under Windows.