CVS MinGW (Crossed-)Native Compiler is Toast

Mon Sep 29 02:21:00 GMT 2003

On Saturday, Sep 27, 2003, at 20:51 Pacific/Auckland, Mohan Embar wrote:
> (GCJ people: this is the last post on this subject I'll do here. I 
> wanted to
> follow up on this so people knew the outcome.)
>>> I think I have a faint idea of one of the things that seems to be
>> going wrong.
>>>> Line 10300 of parse.y has this call:
>>>> list = lookup_method_invoke (0, identifier_wfl, type, 
>> identifier, args);
>>>> Upon entry into this function, some prologue code seems to be
>> executed in gcc/gcc/config/i386/cygwin.asm which trashes
>> the first parameter, changing it from a 0 to garbage. It's a downward
>> spiral from there.
>> The problem appears to be similar to this:
>> http://www.cygwin.com/ml/cygwin/2002-06/msg00122.html
>> When I hack the Makefile to use -mno-stack-arg-probe, the problem
> disappears.
>> This one definitely qualified as cruel and unusual punishment.
>> How should I follow up on this?

Presumably this is a new bug since 3.3, so see if you can figure out 
when the problem started and what patch caused it. Then you'll know who 
to blame ;-). If there's nothing obvious in the ChangeLogs, there's no 
shame in resorting to the "binary search" technique.
Regards
Bryce.