Re: c/4109: undefined symbol whith -O2 on solaris 2.7 with gcc 3.0

Re: c/4109: undefined symbol whith -O2 on solaris 2.7 with gcc 3.0

[rth]

Synopsis: undefined symbol whith -O2 on solaris 2.7 with gcc 3.0

State-Changed-From-To: open->closed
State-Changed-By: rth
State-Changed-When: Wed Apr 24 15:35:31 2002
State-Changed-Why:
    Fixed for gcc 3.1.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4109

c/4109: undefined symbol whith -O2 on solaris 2.7 with gcc 3.0

[Luc.Maisonobe]

>Number:         4109
>Category:       c
>Synopsis:                     undefined symbol whith -O2 on solaris 2.7 with gcc 3.0
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 24 00:26:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Luc.Maisonobe@cnes.fr
>Release:        gcc-3.0
>Organization:
>Environment:
Solaris 2.7
>Description:
I have encountered a bug on Solaris 2.7 with gcc 3.0.

The problem occurs at link time. If the -O2 flag is used,
then there is an undefined global symbol in the object file,
and this symbol is not resolved at link time.

I use a standard gcc 3.0 built on Solaris 2.7:

(tucana) luc% gcc -v
Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.7/3.0/specs
Configured with: ../configure --prefix=/usr/local --enable-shared
--enable-threads --enable-languages=c++,f77,java --enable-libgcj
Thread model: posix
gcc version 3.0
>How-To-Repeat:
compile the attached file with the -O2 flag :
   gcc -O2 -c x.c

look at the symbol table :
nm x.o | grep LL

I get this on my machine :
[5]        |         0|       0|NOTY |GLOB |0    |UNDEF  |.LL9
>Fix:
the problem disappears when optimization is turned off
>Release-Note:
>Audit-Trail:
>Unformatted:
               undefined symbol whith -O2 on solaris 2.7 with gcc 3.0
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