public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "d.g.gorbachev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/56168] New: [4.8 Regression] GCC seems to disregard -fno-builtin when compiling with LTO
Date: Fri, 01 Feb 2013 02:44:00 -0000 [thread overview]
Message-ID: <bug-56168-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56168
Bug #: 56168
Summary: [4.8 Regression] GCC seems to disregard -fno-builtin
when compiling with LTO
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: d.g.gorbachev@gmail.com
cat > 1.c
extern int printf(const char *, ...);
extern double pow(double, double);
int main(int argc, char **argv)
{
double d1 = (double) (argc + argv[0][0]);
double d2 = pow(d1, 1.0 / 3.0);
printf("%f %f\n", d1 * d1, d2);
return 0;
}
^D
$ gcc -O -fno-builtin -ffast-math -fno-lto 1.c
/tmp/cc9Il6Md.o:1.c:function main: error: undefined reference to 'pow'
[...]
$ gcc -O -fno-builtin -ffast-math -flto 1.c
/tmp/ccfKmD30.ltrans0.ltrans.o:ccfKmD30.ltrans0.o:function main: error:
undefined reference to 'cbrt'
[...]
R191367 (20120916) - ok, r191654 (20120923) - bug.
next reply other threads:[~2013-02-01 2:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 2:44 d.g.gorbachev at gmail dot com [this message]
2013-02-01 9:42 ` [Bug lto/56168] " rguenth at gcc dot gnu.org
2013-02-01 12:35 ` rguenth at gcc dot gnu.org
2013-02-01 12:40 ` rguenth at gcc dot gnu.org
2013-02-04 12:20 ` rguenth at gcc dot gnu.org
2013-02-04 12:20 ` rguenth at gcc dot gnu.org
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-56168-4@http.gcc.gnu.org/bugzilla/ \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).