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Re: C++ / G++
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From:
H.Merijn Brand
Date:
May 16, 2017 16:59
Subject:
Re: C++ / G++
Message ID:
20170516185913.5705870f@pc09.procura.nl
On Tue, 16 May 2017 15:48:31 +0200, Sawyer X <xsawyerx@gmail.com> wrote:
> Tux and Jim, could you please verify this patch?
The patch looks healthy. Builds fine and passes all tests with gcc.
In meta it will touch 4 files:
U/perl/infnan.U
U/perl/perlxv.U
U/perl/usekernprocpathname.U
U/perl/usensgetexecutablepath.U
It will *not* cause a huge re-order, so it can be cleanly applied. Or
notify me to apply it and I'll commit to meta and blead. If wanted, the
latter in a branch.
Two builds, two different results. The difference being longdoubles
1: #####################################################################
Without longdoubles
Test Summary Report
-------------------
op/sprintf2.t (Wstat: 0 Tests: 1555 Failed: 6)
Failed tests: 1492-1497
Files=2559, Tests=1242484, 344 wallclock secs (130.99 usr 10.19 sys + 755.34 cusr 32.28 csys = 928.80 CPU)
Result: FAIL
2: #####################################################################
With longdoubles
All tests successful.
Files=2559, Tests=1242508, 425 wallclock secs (162.53 usr 11.41 sys + 984.97 cusr 37.51 csys = 1196.42 CPU)
Result: PASS
1: #####################################################################
Summary of my perl5 (revision 5 version 26 subversion 0) configuration:
Snapshot of: 9e716730a7a2ac25b33046db09cf147435f58b9f
Platform:
osname=linux
osvers=4.10.13-1-default
archname=x86_64-linux-thread-multi
uname='linux lx09 4.10.13-1-default #1 smp preempt thu apr 27 12:23:31 utc 2017 (e5d11ce) x86_64 x86_64 x86_64 gnulinux '
config_args='-Duse64bitall -Dusethreads -Dcc=g++ -des'
hint=recommended
useposix=true
d_sigaction=define
useithreads=define
usemultiplicity=define
use64bitint=define
use64bitall=define
uselongdouble=undef
usemymalloc=n
default_inc_excludes_dot=define
bincompat5005=undef
Compiler:
cc='g++'
ccflags ='-D_REENTRANT -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
optimize='-O2'
cppflags='-D_REENTRANT -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'
ccversion=''
gccversion='6.3.1 20170202 [gcc-6-branch revision 245119]'
gccosandvers=''
intsize=4
longsize=8
ptrsize=8
doublesize=8
byteorder=12345678
doublekind=3
d_longlong=define
longlongsize=8
d_longdbl=define
longdblsize=16
longdblkind=3
ivtype='long'
ivsize=8
nvtype='double'
nvsize=8
Off_t='off_t'
lseeksize=8
alignbytes=8
prototype=define
Linker and Libraries:
ld='g++'
ldflags =' -fstack-protector-strong -L/usr/local/lib'
libpth=/usr/include/c++/6 /usr/include/c++/6/x86_64-suse-linux /usr/include/c++/6/backward /usr/local/lib /usr/lib64/gcc/x86_64-suse-linux/6/include-fixed /usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/lib /usr/lib /lib/../lib64 /usr/lib/../lib64 /lib /lib64 /usr/lib64 /usr/local/lib64
libs=-lpthread -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
libc=libc-2.25.so
so=so
useshrplib=false
libperl=libperl.a
gnulibc_version='2.25'
Dynamic Linking:
dlsrc=dl_dlopen.xs
dlext=so
d_dlsymun=undef
ccdlflags='-Wl,-E'
cccdlflags='-fPIC'
lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector-strong'
Characteristics of this binary (from libperl):
Compile-time options:
HAS_TIMES
MULTIPLICITY
PERLIO_LAYERS
PERL_COPY_ON_WRITE
PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT
PERL_MALLOC_WRAP
PERL_OP_PARENT
PERL_PRESERVE_IVUV
USE_64_BIT_ALL
USE_64_BIT_INT
USE_ITHREADS
USE_LARGE_FILES
USE_LOCALE
USE_LOCALE_COLLATE
USE_LOCALE_CTYPE
USE_LOCALE_NUMERIC
USE_LOCALE_TIME
USE_PERLIO
USE_PERL_ATOF
USE_REENTRANT_API
Built under linux
Compiled at May 16 2017 18:40:27
@INC:
lib
/usr/local/lib/perl5/site_perl/5.26.0/x86_64-linux-thread-multi
/usr/local/lib/perl5/site_perl/5.26.0
/usr/local/lib/perl5/5.26.0/x86_64-linux-thread-multi
/usr/local/lib/perl5/5.26.0
2: #####################################################################
Summary of my perl5 (revision 5 version 26 subversion 0) configuration:
Snapshot of: 9e716730a7a2ac25b33046db09cf147435f58b9f
Platform:
osname=linux
osvers=4.10.13-1-default
archname=x86_64-linux-thread-multi-ld
uname='linux lx09 4.10.13-1-default #1 smp preempt thu apr 27 12:23:31 utc 2017 (e5d11ce) x86_64 x86_64 x86_64 gnulinux '
config_args='-Dusedevel -Duse64bitall -Dusethreads -Duseithreads -Duselongdouble -Dcc=g++ -des'
hint=recommended
useposix=true
d_sigaction=define
useithreads=define
usemultiplicity=define
use64bitint=define
use64bitall=define
uselongdouble=define
usemymalloc=n
default_inc_excludes_dot=define
bincompat5005=undef
Compiler:
cc='g++'
ccflags ='-D_REENTRANT -D_GNU_SOURCE -fPIC -DDEBUGGING -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/pro/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
optimize='-O2'
cppflags='-D_REENTRANT -D_GNU_SOURCE -fPIC -DDEBUGGING -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/pro/local/include'
ccversion=''
gccversion='6.3.1 20170202 [gcc-6-branch revision 245119]'
gccosandvers=''
intsize=4
longsize=8
ptrsize=8
doublesize=8
byteorder=12345678
doublekind=3
d_longlong=define
longlongsize=8
d_longdbl=define
longdblsize=16
longdblkind=3
ivtype='long'
ivsize=8
nvtype='long double'
nvsize=16
Off_t='off_t'
lseeksize=8
alignbytes=16
prototype=define
Linker and Libraries:
ld='g++'
ldflags ='-L/pro/local/lib -fstack-protector-strong'
libpth=/usr/include/c++/6 /usr/include/c++/6/x86_64-suse-linux /usr/include/c++/6/backward /usr/local/lib /usr/lib64/gcc/x86_64-suse-linux/6/include-fixed /usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/lib /usr/lib /pro/local/lib /lib/../lib64 /usr/lib/../lib64 /lib /lib64 /usr/lib64 /usr/local/lib64
libs=-lpthread -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
libc=libc-2.25.so
so=so
useshrplib=false
libperl=libperl.a
gnulibc_version='2.25'
Dynamic Linking:
dlsrc=dl_dlopen.xs
dlext=so
d_dlsymun=undef
ccdlflags='-Wl,-E'
cccdlflags='-fPIC'
lddlflags='-shared -O2 -L/pro/local/lib -fstack-protector-strong'
Characteristics of this binary (from libperl):
Compile-time options:
DEBUGGING
HAS_TIMES
MULTIPLICITY
PERLIO_LAYERS
PERL_COPY_ON_WRITE
PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT
PERL_MALLOC_WRAP
PERL_OP_PARENT
PERL_PRESERVE_IVUV
PERL_TRACK_MEMPOOL
PERL_USE_DEVEL
USE_64_BIT_ALL
USE_64_BIT_INT
USE_ITHREADS
USE_LARGE_FILES
USE_LOCALE
USE_LOCALE_COLLATE
USE_LOCALE_CTYPE
USE_LOCALE_NUMERIC
USE_LOCALE_TIME
USE_LONG_DOUBLE
USE_PERLIO
USE_PERL_ATOF
USE_REENTRANT_API
Built under linux
Compiled at May 16 2017 18:21:23
@INC:
lib
/opt/perl/lib/site_perl/5.26.0/x86_64-linux-thread-multi-ld
/opt/perl/lib/site_perl/5.26.0
/opt/perl/lib/5.26.0/x86_64-linux-thread-multi-ld
/opt/perl/lib/5.26.0
> On Tue, May 16, 2017 at 6:31 AM, Jarkko Hietaniemi <jhi@iki.fi> wrote:
>
> > On 5/15/17 10:04 PM, Jarkko Hietaniemi wrote:
> >
> >> https://perl5.git.perl.org/perl.git/blob/HEAD:/Configure#l20698
> [...]
> [...]
> [...]
> >>
> >> I think I found it. Not a regression in g++, but instead getting
> >> stricter. The bad news: some tweaks necessary in Configure.
> >>
> >
> > Strange news: so I fixed couple of compilation failures with g++
> > in Configure so that the results don't have broken differences
> > between g++ 6 and gcc 6. (There are some diffs, but not unexpected
> > between C++ and C.) The strange part: this didn't fix the sprintf2.t
> > failures. So I need to dig some more.
> >
> > FWIW the Configure fixes are attached.
--
H.Merijn Brand http://tux.nl Perl Monger http://amsterdam.pm.org/
using perl5.00307 .. 5.25 porting perl5 on HP-UX, AIX, and openSUSE
http://mirrors.develooper.com/hpux/ http://www.test-smoke.org/
http://qa.perl.org http://www.goldmark.org/jeff/stupid-disclaimers/
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