optimization/9632: 'If' statement evaluates differently depending on optimization (-O vs -g)

optimization/9632: 'If' statement evaluates differently depending on optimization (-O vs -g)

[larry]

>Number:         9632
>Category:       optimization
>Synopsis:       'If' statement evaluates differently depending on optimization (-O vs -g)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 08 22:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     larry@tmpinc.com
>Release:        gcc version 2.96 20000731 (Red Hat Linux 7.2 2.96-112.7.2)
>Organization:
>Environment:
RedHat 7.2
i386
gcc version 2.96 20000731 (Red Hat Linux 7.2 2.96-112.7.2)
>Description:
The attached file contains a code snippet that can be compiled and run. The 'if' test fails when the code is compiled with 
-O and works as expected when compiled with -g.
>How-To-Repeat:
Refer to attachment. When compiled with -g flag, wire_draw
is called as expected. When compiled with -O, wire_draw is
not called.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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Re: optimization/9632: 'If' statement evaluates differently depending on optimization (-O vs -g)

[ebotcazou]

Synopsis: 'If' statement evaluates differently depending on optimization (-O vs -g)

State-Changed-From-To: open->closed
State-Changed-By: ebotcazou
State-Changed-When: Sun Feb 16 14:57:51 2003
State-Changed-Why:
    GCC 2.96 is not an official FSF release. Report the bug directly to RedHat.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9632