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From: "marc.glisse at normalesup dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/49914] New: call to abs(long long) in gcc/fold-const.c
Date: Sat, 30 Jul 2011 18:13:00 -0000 [thread overview]
Message-ID: <bug-49914-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49914
Summary: call to abs(long long) in gcc/fold-const.c
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: marc.glisse@normalesup.org
Hello,
in gcc/fold-const.c (currently line 7051), in function
fold_plusminus_mult_expr:
if (exact_log2 (abs (int11)) > 0 && int01 % int11 == 0
where int11 is a HOST_WIDE_INT. Is this call to abs safe? A few lines above,
abs is computed as x>=0?x:-x.
(don't know how to classify this, but it causes a build failure for me with a
C++98 compiler (ambiguous))
next reply other threads:[~2011-07-30 18:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-30 18:13 marc.glisse at normalesup dot org [this message]
2011-07-30 18:29 ` [Bug other/49914] " marc.glisse at normalesup dot org
2011-07-31 9:46 ` [Bug bootstrap/49914] " rguenth at gcc dot gnu.org
2011-08-01 16:37 ` paolo.carlini at oracle dot com
2011-08-01 16:45 ` joseph at codesourcery dot com
2011-08-01 16:57 ` paolo.carlini at oracle dot com
2011-08-01 17:21 ` paolo.carlini at oracle dot com
2011-08-01 19:48 ` paolo.carlini at oracle dot com
2011-08-02 8:41 ` rguenther at suse dot de
2011-08-02 8:43 ` rguenther at suse dot de
2011-08-02 12:33 ` joseph at codesourcery dot com
2011-08-02 20:28 ` paolo at gcc dot gnu.org
2011-08-02 20:32 ` paolo.carlini at oracle dot com
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