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Re: Using "-O1 -g" to debug optimisation bugs in Mingw.

From: Ben Pfaff
Subject: Re: Using "-O1 -g" to debug optimisation bugs in Mingw.
Date: Tue, 03 Apr 2007 09:20:36 -0700
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux)

"John McCabe-Dansted" <address@hidden> writes:

> I've mentioned previously many of the bugs in the Mingw port go away
> if we compile with -O0.
> Most of them come back if we compile with -O1. I understand that O1
> code is meant to be reasonable to debug, so we may be able to diagnose
> those problems by debugging code generated with "-O1 -g".
> I intend to (as John D suggested offlist) also write a script to
> change the compile options on each .o file and see which ones seem to
> be causing the bugs.

That's great.

By the way, what do we lack at the moment (if anything) before
PSPP compiles clean out-of-the-box (even if buggy) on MinGW?
Ben Pfaff

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