[Mingw-users] sigill when trying to typecast integer to float

[Christian A. <an...@ko...>]

Hi,

Sorry if this appears twice.

I have a problem using the gnubg progam (www.gnubg.org) when compiled with=
=20
mingw using the -msse flag. The program contains uses sse for cpu's that=20
have it and checks for it's presence at runtime. When the program is ran=20
my old athlon-thunderbird it crashes shortly after start.

Running gnubg through gnudb tells me that it is a integer to float=20
conversion that fails:

gnubg loaded(gdb) run
Starting program: C:\gnu\Code\gnubg/gnubg.exe
=2D--Type <return> to continue, or q <return> to quit---

Program received signal SIGILL, Illegal instruction.
randRange (range=3D0.705000103) at misc3d.c:792
792 =A0 =A0 =A0 =A0 =A0 =A0 return range * ((float)rand() / (float)RAND_MAX=
);

I've tracked it down to (float)rand() failing. Any ideas?

Compiled without -msse and sse support enabled in the program runs fine.,=20
but since gnubg is to be distributed in compiled form to a lot of users=20
this is not really an option.

Christian.
=2D-=20
"I can't promise that I'll try. But, I'll try to try." -- Bart