[Bug optimization/11068] New: GCC 3.2.X miscompiles Firebird 1.5 with -O1

[Bug optimization/11068] New: GCC 3.2.X miscompiles Firebird 1.5 with -O1

[skidder@bssys.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=11068

           Summary: GCC 3.2.X miscompiles Firebird 1.5 with -O1
           Product: gcc
           Version: 3.2.2
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P4
         Component: optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: skidder@bssys.com
                CC: gcc-bugs@gcc.gnu.org
 GCC build triplet: i586-pc-linux-gnu
  GCC host triplet: i586-pc-linux-gnu
GCC target triplet: i586-pc-linux-gnu

Problem is reproducable using GCC 3.2.1 or 3.2.3 on 
Mandrake 8.0 with GLIBC 2.3.1

Here is the testcase:
=== test.cpp =====================
#include <stdio.h>

#define USHORT unsigned short
#define UCHAR unsigned char

USHORT get_numeric() {
        return 42388;
}

int main ()
{
USHORT          length, l;
UCHAR           *buffer, static_buffer [1024];

length = (USHORT)get_numeric();

/* Allocate blob buffer is static buffer is too short */

if (!length || length + 1 <= (USHORT)(sizeof (static_buffer)) ) {
    buffer = static_buffer;
        printf("Shit happened !");
}
else
    {
        printf("Works fine");
    l = length + 1;
//    buffer = BURP_ALLOC (l);
        return 1;
    }

}
========================
g++ test.cpp
./a.out
Works fine
========================
g++ -O1 test.cpp
./a.out
Shit happened !
========================



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[Bug optimization/11068] GCC 3.2.X miscompiles Firebird 1.5 with -O1

[dhazeghi@yahoo.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=11068


dhazeghi@yahoo.com changed:

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


------- Additional Comments From dhazeghi@yahoo.com  2003-06-02 21:12 -------
Hello,

with gcc 3.2, your testcase fails. With gcc 3.3 branch and mainline (20030512), it appears to work 
fine, on my i686-pc-linux-gnu system. Can you verify whether gcc 3.3 fixes the problem for you? 
Thanks,

Dara



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[Bug optimization/11068] GCC 3.2.X miscompiles Firebird 1.5 with -O1

[skidder@bssys.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=11068



------- Additional Comments From skidder@bssys.com  2003-06-03 09:16 -------
Users report that GCC 3.3 (from SuSE unstable) really fixes the problem.
We'll try to switch to 3.3 then. Sorry for the disturbance.



------- You are receiving this mail because: -------
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[Bug optimization/11068] GCC 3.2.X miscompiles Firebird 1.5 with -O1

[dhazeghi@yahoo.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=11068


dhazeghi@yahoo.com changed:

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


------- Additional Comments From dhazeghi@yahoo.com  2003-06-03 10:36 -------
Confirmed fixed on 3.3 by submitter's users. Closed. If it turns out there are 
other firebird related compilation problems with gcc 3.3, by all means submits 
bug reports for them.



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[Bug optimization/11068] GCC 3.2.X miscompiles Firebird 1.5 with -O1

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.0                       |3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11068