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From: andreas@dwl.co.uk
To: gcc-gnats@gcc.gnu.org
Subject: c++/3594: (<expr != 0) != 0 bad code with -O2 under sparc solaris 2.8
Date: Fri, 06 Jul 2001 08:26:00 -0000	[thread overview]
Message-ID: <20010706152054.20644.qmail@sourceware.cygnus.com> (raw)

>Number:         3594
>Category:       c++
>Synopsis:       (<expr != 0) != 0 bad code with -O2 under sparc solaris 2.8
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 06 08:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Andreas Damm
>Release:        2.95.3
>Organization:
>Environment:
sparc-sun-solaris2.8
>Description:
When compiling the test program with c++ -O2, the last assembly command is left of in the generated code (and x, 1, x) which leads to incorrect results.
Compiling with gcc is OK. So is leaving of the != 0.
Function foo is one line: return FD_ISSET(fd, fdset) != 0;
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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             reply	other threads:[~2001-07-06  8:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-07-06  8:26 andreas [this message]
2001-11-21 20:56 ciceron
2001-11-21 20:56 ciceron
2002-05-03 14:49 davem

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