[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=99457
                 CC|                            |egallager at gcc dot gnu.org

--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
Note that there has been discussion of deprecating stabs support recently:
https://gcc.gnu.org/pipermail/gcc-patches/2017-July/479552.html

[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.0
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Stabs debugging support was removed r13-2361-g7e0db0cdf01e9c so closing as
won't fix.

[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[wilson at gcc dot gnu dot org]

------- Comment #3 from wilson at gcc dot gnu dot org  2007-03-31 02:24 -------
Created an attachment (id=13305)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13305&action=view)
Mark array TYPE_DOMAIN as used to prevent garbage collection.

This has been tested with a C only BOOT_CFLAGS=-gstabs bootstrap.  It needs a
full bootstrap, gcc testsuite run, and gdb testsuite run.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235

[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[wilson at gcc dot gnu dot org]

------- Comment #2 from wilson at gcc dot gnu dot org  2007-03-31 02:23 -------
I was able to reproduce this on an x86_64-linux machine following the
instructions.

Assuming this is the same conceptual problem as 31230, I tried the same patch,
in another file.  Just marking the array type domain type as used so it
wouldn't be garbage collected.  It was a little harder here since we didn't
have a convenient subroutine to call, so I had to move some code out of
dbxout_type into a new function, but effectively there is only a one line
actual code change here.

This survived a C-only BOOT_CFLAGS=-gstabs bootstrap, which seems to be good
evidence that it is working.

This patch is otherwise untested.  It needs a full bootstrap, gcc testsuite
run, and gdb testsuite run.


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wilson at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-31 02:23:00
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235

[Bug bootstrap/31235] Bootstrap comparison failure with -gstabs

[joseph at codesourcery dot com]

------- Comment #1 from joseph at codesourcery dot com  2007-03-16 22:50 -------
Subject: Re:   New: Bootstrap comparison failure with
 -gstabs

On Fri, 16 Mar 2007, feri1024 at t-email dot hu wrote:

> Configured and built with:
> 
> ../gcc-4.2-20070221/configure --enable-languages=c --enable-bootstrap
> --disable-nls && make BOOT_CFLAGS="-gstabs"
> 
> The result is:
> 
> [...]
> Comparing stages 2 and 3
> warning: ./cc1-checksum.o differs
> Bootstrap comparison failure!
> ./dbxout.o differs
> ./insn-emit.o differs
> ./varasm.o differs

The symptoms, including the need for a special BOOT_CFLAGS when 
configuring to trigger a bootstrap failure and the list of miscomparing 
files, seem just the same as the case I analysed and reported today as 
bug 31230.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31230


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235