Re: Building gcc on cygwin w/ Herman Ten Brugge's bounds checking patch
On Mon, 10 Nov 2003 12:28:38 -0500 "Joe Buehler" <[EMAIL PROTECTED]> wrote: > I had downloaded this but not tried it yet. If you get it > working it would be "interesting" to recompile Cygwin and > all of its packages and see what happens. We have most of > the core dumps out of our local Cygwin setup but there are > still some happening from time to time... Ok. I've got it working for trivial (hello world) type programs that don't have errors; and it reports errors then seg faults for a program w/ an array bounds error; similar operation vs. the Linux version of the same program. The main problem was that it was checking "char **environ" which from limited googling appears to be defined in cygwin1.dll; which explains the "funny" message I was getting from gdb wrt "ptype environ". This was w/ 3.3.2 (FSF) w/ the appropriate bounds check patch from Herman's site, w/ a couple of tweaks that I made. I don't anticipate it being difficult to make the "same" changes to the cygwin version of 3.3.1 and provide a working patch; but we will see. For the impatient change libgcc2.c so that __bounds_checking_on declaration is outside of #ifndef __CYGWIN__ (keeping #ifdef L__main so there is only one of these. change init.c so that for (i = 0; environ[i]; ++i) block is commented out could change #ifndef __vxworks to #ifndef __CYGWIN__ or equivalent. This is all I can remember changing off the top of my head. Of course this checking only works for "C" & not "C++" or any other language AFAIK. FYI, Bill PS. I'm sure it should be possible to process the environ; but I'd need so direction from cygwin experts or a pointer to an example in existing source code. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: Building gcc on cygwin w/ Herman Ten Brugge's bounds checking patch
On Mon, Nov 10, 2003 at 12:28:38PM -0500, Joe Buehler wrote: >Bill Priest wrote: >>I've built gcc w/ the bounds checking patch on Linux and solaris and am >>trying to build it on cygwin (w/ the cygwin modified source from >>setup). With tweak to one file I've been able to get it to bootstrap >>w/o any errors and the resulting C compiler will work w/o specifying >>"-fbounds-checking". But I get a seg fault when specifying >>"-fbounds-checking". Has anyone been able to build gcc w/ this patch?? >>I'm sure the problem is parts of the patch that don't apply cleanly vs. >>the cygwin patches. > >I had downloaded this but not tried it yet. If you get it working it >would be "interesting" to recompile Cygwin and all of its packages and >see what happens. We have most of the core dumps out of our local >Cygwin setup but there are still some happening from time to time... I don't know what this means. Are you saying that you have local modifications to fix segvs in cygwin? If so, why aren't you sending any changes back to cygwin-patches? -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: Building gcc on cygwin w/ Herman Ten Brugge's bounds checking patch
Bill Priest wrote: I've built gcc w/ the bounds checking patch on Linux and solaris and am trying to build it on cygwin (w/ the cygwin modified source from setup). With tweak to one file I've been able to get it to bootstrap w/o any errors and the resulting C compiler will work w/o specifying "-fbounds-checking". But I get a seg fault when specifying "-fbounds-checking". Has anyone been able to build gcc w/ this patch?? I'm sure the problem is parts of the patch that don't apply cleanly vs. the cygwin patches. I had downloaded this but not tried it yet. If you get it working it would be "interesting" to recompile Cygwin and all of its packages and see what happens. We have most of the core dumps out of our local Cygwin setup but there are still some happening from time to time... -- Joe Buehler -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Building gcc on cygwin w/ Herman Ten Brugge's bounds checking patch
All, I've built gcc w/ the bounds checking patch on Linux and solaris and am trying to build it on cygwin (w/ the cygwin modified source from setup). With tweak to one file I've been able to get it to bootstrap w/o any errors and the resulting C compiler will work w/o specifying "-fbounds-checking". But I get a seg fault when specifying "-fbounds-checking". Has anyone been able to build gcc w/ this patch?? I'm sure the problem is parts of the patch that don't apply cleanly vs. the cygwin patches. Regards, Bill __ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
