optimization/4186: core dump in -O2 on ia32 with attached code (regression to 2.95.*)

Fri Aug 31 07:36:00 GMT 2001

>Number:         4186
>Category:       optimization
>Synopsis:       core dump in -O2 on ia32 with attached code (regression to 2.95.*)
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 31 07:36:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     wilhelm.nuesser@sap.com
>Release:        gcc version 3.0.1
>Organization:
>Environment:

Linux ia32, glibc 2.1, SuSE 7.0, RH 6.* ...
gcc -v gives:
Reading specs from /opt/gcc301/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/specs
Configured with: ../gcc/gcc-3.0.1/configure --prefix=/opt/gcc301 --enable-shared
Thread model: single
gcc version 3.0.1
>Description:
Attached code gives core dumps when compiling with -O2.
Running -O1 works. Changing the struct s1 (removing an 
unused short) also works. Changing third parameter of memcpy
to int constant also works. 
>How-To-Repeat:
Compile attached code with -O2
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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