Bleadperl v5.27.3-31-gf14cf36320 DEBUGGING breaks ETJ/Event-1.26.tar.gz

[p5pRT]

Migrated from rt.perl.org#132094 (status was 'resolved')

Searchable as RT132094$

[p5pRT]

From @andk

bisect

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commit f14cf36
Author​: Tony Cook <tony@​develop-help.com>
Date​: Mon Aug 14 11​:52​:39 2017 +1000

  (perl #131746) avoid undefined behaviour in Copy() etc

cpantesters

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http​://www.cpantesters.org/cpan/report/a4656f24-92a0-11e7-a6e8-4c7815098ed7

perl -V

---

Summary of my perl5 (revision 5 version 27 subversion 4) configuration​:
  Commit id​: 99333cd
  Platform​:
  osname=linux
  osvers=4.9.0-2-amd64
  archname=x86_64-linux-thread-multi-ld
  uname='linux k93msid 4.9.0-2-amd64 #1 smp debian 4.9.18-1 (2017-03-30) x86_64 gnulinux '
  config_args='-Dprefix=/home/sand/src/perl/repoperls/installed-perls/host/k93msid/v5.27.3-39-g99333cdb13/ac75 -Dmyhostname=k93msid -Dinstallusrbinperl=n -Uversiononly -Dusedevel -des -Ui_db -Dlibswanted=cl pthread socket inet nsl gdbm dbm malloc dl ld sun m crypt sec util c cposix posix ucb BSD gdbm_compat -Duseithreads -Duselongdouble -DEBUGGING=both'
  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='cc'
  ccflags ='-D_REENTRANT -D_GNU_SOURCE -fwrapv -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2'
  optimize='-O2 -g'
  cppflags='-D_REENTRANT -D_GNU_SOURCE -fwrapv -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'
  ccversion=''
  gccversion='6.3.0 20170406'
  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='cc'
  ldflags =' -fstack-protector-strong -L/usr/local/lib'
  libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
  libs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
  perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
  libc=libc-2.24.so
  so=so
  useshrplib=false
  libperl=libperl.a
  gnulibc_version='2.24'
  Dynamic Linking​:
  dlsrc=dl_dlopen.xs
  dlext=so
  d_dlsymun=undef
  ccdlflags='-Wl,-E'
  cccdlflags='-fPIC'
  lddlflags='-shared -O2 -g -L/usr/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 Sep 5 2017 05​:59​:33
  %ENV​:
  PERL="/tmp/basesmoker-reloperl-aFQA/bin/perl"
  PERL5LIB=""
  PERL5OPT=""
  PERL5_CPANPLUS_IS_RUNNING="32491"
  PERL5_CPAN_IS_RUNNING="32491"
  PERL_CANARY_STABILITY_NOPROMPT="1"
  PERL_MM_USE_DEFAULT="1"
  PERL_USE_UNSAFE_INC="1"
  @​INC​:
  /home/sand/src/perl/repoperls/installed-perls/host/k93msid/v5.27.3-39-g99333cdb13/ac75/lib/site_perl/5.27.4/x86_64-linux-thread-multi-ld
  /home/sand/src/perl/repoperls/installed-perls/host/k93msid/v5.27.3-39-g99333cdb13/ac75/lib/site_perl/5.27.4
  /home/sand/src/perl/repoperls/installed-perls/host/k93msid/v5.27.3-39-g99333cdb13/ac75/lib/5.27.4/x86_64-linux-thread-multi-ld
  /home/sand/src/perl/repoperls/installed-perls/host/k93msid/v5.27.3-39-g99333cdb13/ac75/lib/5.27.4
  .
--
andreas

[p5pRT]

From @jkeenan

On Fri, 15 Sep 2017 04​:24​:48 GMT, andreas.koenig.7os6VVqR@​franz.ak.mind.de wrote​:

bisect
------
commit f14cf36
Author​: Tony Cook <tony@​develop-help.com>
Date​: Mon Aug 14 11​:52​:39 2017 +1000

(perl #131746) avoid undefined behaviour in Copy() etc

cpantesters
-----------
http​://www.cpantesters.org/cpan/report/a4656f24-92a0-11e7-a6e8-
4c7815098ed7

I could not reproduce this behavior.

I installed blead and then the most recent version of 'cpanm' on top of that perl.

#####
$ ./bin/perl -v | head -2 | tail -1
This is perl 5, version 27, subversion 4 (v5.27.4 (v5.27.3-95-g45d6710)) built for x86_64-linux
#####

I then used that 'cpanm' to install Event-1.26 successfully (apart from some C-level warnings during XS compilation). See attachment.

Thank you very much.

--
James E Keenan (jkeenan@​cpan.org)

[p5pRT]

From @jkeenan

$ ./bin/cpanm --verbose Event
cpanm (App​::cpanminus) 1.7043 on perl 5.027004 built for x86_64-linux
[snip]
Unpacking Event-1.26.tar.gz
Event-1.26/
[snip]
Entering Event-1.26
Checking configure dependencies from META.json
Checking if you have ExtUtils​::MakeMaker 6.58 ... Yes (7.30)
Running Makefile.PL
Configuring Event-1.26 ... Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Event
Writing MYMETA.yml and MYMETA.json
OK
Checking dependencies from MYMETA.json ...
Checking if you have ExtUtils​::MakeMaker 0 ... Yes (7.30)
Checking if you have Test 1 ... Yes (1.30)
Building and testing Event-1.26 ... cp lib/Event/timer.pm blib/lib/Event/timer.pm
[snip]
Running Mkbootstrap for Event ()
chmod 644 "Event.bs"
"/home/jkeenan/testing/blead/bin/perl" -MExtUtils​::Command​::MM -e 'cp_nonempty' -- Event.bs blib/arch/auto/Event/Event.bs 644
"/home/jkeenan/testing/blead/bin/perl" "/home/jkeenan/testing/blead/lib/perl5/5.27.4/ExtUtils/xsubpp" -typemap '/home/jkeenan/testing/blead/lib/perl5/5.27.4/ExtUtils/typemap' -typemap '/home/jkeenan/.cpanm/work/1505484393.28370/Event-1.26/lib/Event/typemap' Event.xs > Event.xsc
mv Event.xsc Event.c
cc -c -Ic -Ilib/Event -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -DVERSION=\"1.26\" -DXS_VERSION=\"1.26\" -fPIC "-I/home/jkeenan/testing/blead/lib/perl5/5.27.4/x86_64-linux/CORE" Event.c
In file included from Event.xs​:269​:0​:
c/var.c​: In function ‘pe_var_start’​:
c/var.c​:82​:20​: warning​: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  mg->mg_virtual = &PL_vtbl_uvar;
  ^
rm -f blib/arch/auto/Event/Event.so
cc -shared -O2 -L/usr/local/lib -fstack-protector-strong Event.o -o blib/arch/auto/Event/Event.so \
  \
 
chmod 755 blib/arch/auto/Event/Event.so
"/home/jkeenan/testing/blead/bin/perl" -MExtUtils​::Command​::MM -e 'cp_nonempty' -- Event.bs blib/arch/auto/Event/Event.bs 644
PERL_DL_NONLAZY=1 "/home/jkeenan/testing/blead/bin/perl" "-MExtUtils​::Command​::MM" "-MTest​::Harness" "-e" "undef *Test​::Harness​::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/attach_to.t ..... ok
t/bored.t ......... ok
t/callback.t ...... ok
t/data.t .......... ok
t/delete.t ........ ok
t/eval.t .......... ok
t/fifo.t .......... ok
t/generic.t ....... ok
t/group.t ......... ok
t/hook.t .......... ok
t/hup.t ........... ok
t/idle.t .......... ok
t/io.t ............ ok
t/leak.t .......... ok
t/leak2.t ......... ok
t/loop.t .......... ok
t/now.t ........... ok
t/reenter.t ....... ok
t/signal.t ........ ok
t/timeout_cb.t .... ok
t/timer.t ......... ok
t/unconfigured.t .. ok
t/var.t ........... ok
All tests successful.
Files=23, Tests=121, 10 wallclock secs ( 0.06 usr 0.02 sys + 2.44 cusr 0.43 csys = 2.95 CPU)
Result​: PASS
"/home/jkeenan/testing/blead/bin/perl" -MExtUtils​::Command​::MM -e 'cp_nonempty' -- Event.bs blib/arch/auto/Event/Event.bs 644
Files found in blib/arch​: installing files in blib/lib into architecture dependent library tree
[snip]
OK
Successfully installed Event-1.26
[snip]

[p5pRT]

The RT System itself - Status changed from 'new' to 'open'

[p5pRT]

From @andk

On Fri, 15 Sep 2017 07​:14​:17 -0700, "James E Keenan via RT" <perlbug-followup@​perl.org> said​:

  > I could not reproduce this behavior.

  > I installed blead and then the most recent version of 'cpanm' on top
  > of that perl.

Did you build a perl with -DDEBUGGING?

--
andreas

[p5pRT]

From @jkeenan

On Fri, 15 Sep 2017 17​:44​:09 GMT, andreas.koenig.7os6VVqR@​franz.ak.mind.de wrote​:

On Fri, 15 Sep 2017 07​:14​:17 -0700, "James E Keenan via RT"
<perlbug-followup@​perl.org> said​:

I could not reproduce this behavior.

I installed blead and then the most recent version of 'cpanm' on top
of that perl.

Did you build a perl with -DDEBUGGING?

No, I did not. You are correct that the breakage occurs on -DDEBUGGING builds, as my subsequent re-build confirms.

Thank you very much.

--
James E Keenan (jkeenan@​cpan.org)

[p5pRT]

From @tonycoz

On Thu, 14 Sep 2017 21​:24​:48 -0700, andreas.koenig.7os6VVqR@​franz.ak.mind.de wrote​:

bisect
------
commit f14cf36
Author​: Tony Cook <tony@​develop-help.com>
Date​: Mon Aug 14 11​:52​:39 2017 +1000

(perl #131746) avoid undefined behaviour in Copy() etc

cpantesters
-----------
http​://www.cpantesters.org/cpan/report/a4656f24-92a0-11e7-a6e8-
4c7815098ed7

The asserts added by this patch detect behaviour considered undefined behaviour in the C standard.

In this case, calling memset() with a NULL pointer (hidden in a Zero() macro) at line 272 in c/unix.c

Tony

[p5pRT]

From @iabyn

On Sun, Sep 17, 2017 at 09​:04​:47PM -0700, Tony Cook via RT wrote​:

On Thu, 14 Sep 2017 21​:24​:48 -0700, andreas.koenig.7os6VVqR@​franz.ak.mind.de wrote​:

bisect
------
commit f14cf36
Author​: Tony Cook <tony@​develop-help.com>
Date​: Mon Aug 14 11​:52​:39 2017 +1000

(perl #131746) avoid undefined behaviour in Copy() etc

cpantesters
-----------
http​://www.cpantesters.org/cpan/report/a4656f24-92a0-11e7-a6e8-
4c7815098ed7

The asserts added by this patch detect behaviour considered undefined behaviour in the C standard.

In this case, calling memset() with a NULL pointer (hidden in a Zero() macro) at line 272 in c/unix.c

There is a cpan ticket for this​:

  https://rt.cpan.org/Public/Bug/Display.html?id=123115

Closing the perl ticket.

--
Justice is when you get what you deserve.
Law is when you get what you pay for.

[p5pRT]

@iabyn - Status changed from 'open' to 'resolved'