[Bug optimization/11837] New: Stack frame gets corrupted

[Bug optimization/11837] New: Stack frame gets corrupted

[mail at andreas-s dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837

           Summary: Stack frame gets corrupted
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mail at andreas-s dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: avr

The following program runs fine when compiled with -O1 or -O2, but with
-Os the function iRealFT() corrupts the stack frame (R29):

http://andreas-s.net/gccbug.tar.gz

Contains (preprocessed) sources, Makefile and elf objects which reproduce the
problem. You can see in the simulator (tried it with simulavr and AVR-Studio 3)
that the return from iRealFT() doesn't work. Sorry that I couldn't provide an
inline example.

gcc 3.3.1 20030720
binutils 2.14 20030727

(PS: why is the Os-compiled binary larger than the O2 and O1 ones?

[Bug optimization/11837] Stack frame gets corrupted

[mail at andreas-s dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837



------- Additional Comments From mail at andreas-s dot net  2003-08-06 18:41 -------
Created an attachment (id=4572)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4572&action=view)
demonstrates the bug

didn't know it was possible to attach files

[Bug optimization/11837] Stack frame gets corrupted

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


------- Additional Comments From pinskia at physics dot uc dot edu  2003-08-06 19:42 -------
Could you try a 3.4 snapshot as there has been some fixes to gcc with respect to avr.

[Bug optimization/11837] Stack frame gets corrupted

[neroden at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837


neroden at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---


------- Additional Comments From neroden at gcc dot gnu dot org  2003-08-24 19:51 -------
AVR is neither a primary nor secondary evaluation platform.  This is not clearly a regression, and we don't even know if it occurs in 3.4, so 
retargeting.   Still waiting for feedback about whether this occurs in 3.4.

[Bug optimization/11837] Stack frame gets corrupted

[dhazeghi at yahoo dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837


dhazeghi at yahoo dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |denisc at overta dot ru
           Keywords|                            |wrong-code


------- Additional Comments From dhazeghi at yahoo dot com  2003-10-24 23:10 -------
Denis, as avr maintainer, I was wondering if you've seen this problem before, or have some 
suggestion about it? Thanks.

[Bug optimization/11837] Stack frame gets corrupted

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11837


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-02 23:12 -------
No feedback in 3 months (T-4 days).