From @andk

git

commit e0e1be5
Author​: Karl Williamson <public@​khwilliamson.com>
Date​: Mon Feb 17 12​:49​:10 2014 -0700

  regcomp.c​: Simplify /l Synthetic Start Class construction

valgrind

==32337== Conditional jump or move depends on uninitialised value(s)
==32337== at 0x467277​: S_ssc_or (regcomp.c​:1345)
==32337== by 0x477FA7​: S_study_chunk.constprop.12 (regcomp.c​:4842)
==32337== by 0x47B589​: Perl_re_op_compile (regcomp.c​:6842)
==32337== by 0x430000​: Perl_pmruntime (op.c​:4910)
==32337== by 0x45CE42​: Perl_yyparse (perly.y​:1385)
==32337== by 0x4CC303​: S_doeval (pp_ctl.c​:3475)
==32337== by 0x4D7574​: Perl_pp_require (pp_ctl.c​:4131)
==32337== by 0x49C1E2​: Perl_runops_standard (run.c​:42)
==32337== by 0x43497A​: Perl_call_sv (perl.c​:2761)
==32337== by 0x436711​: Perl_call_list (perl.c​:4858)
==32337== by 0x41E7EB​: S_process_special_blocks (op.c​:8030)
==32337== by 0x42F00B​: Perl_newATTRSUB_x (op.c​:7992)
==32337==
==32337== Conditional jump or move depends on uninitialised value(s)
==32337== at 0x4665FB​: S_ssc_finalize (regcomp.c​:1459)
==32337== by 0x47B71B​: Perl_re_op_compile (regcomp.c​:6925)
==32337== by 0x430000​: Perl_pmruntime (op.c​:4910)
==32337== by 0x45CE42​: Perl_yyparse (perly.y​:1385)
==32337== by 0x4CC303​: S_doeval (pp_ctl.c​:3475)
==32337== by 0x4D7574​: Perl_pp_require (pp_ctl.c​:4131)
==32337== by 0x49C1E2​: Perl_runops_standard (run.c​:42)
==32337== by 0x43497A​: Perl_call_sv (perl.c​:2761)
==32337== by 0x436711​: Perl_call_list (perl.c​:4858)
==32337== by 0x41E7EB​: S_process_special_blocks (op.c​:8030)
==32337== by 0x42F00B​: Perl_newATTRSUB_x (op.c​:7992)
==32337== by 0x431B63​: Perl_utilize (op.c​:5402)

command

t/union_more.t from the testsuite of RJBS/Number-Tolerant-1.703.tar.gz

perl -V

Summary of my perl5 (revision 5 version 19 subversion 9) configuration​:
  Commit id​: e0e1be5
  Platform​:
  osname=linux, osvers=3.10-3-amd64, archname=x86_64-linux-ld
  uname='linux k83 3.10-3-amd64 #1 smp debian 3.10.11-1 (2013-09-10) x86_64 gnulinux '
  config_args='-Dprefix=/home/sand/src/perl/repoperls/installed-perls/perl/v5.19.8-514-ge0e1be5/127e -Dmyhostname=k83 -Dinstallusrbinperl=n -Uversiononly -Dusedevel -des -Ui_db -Uuseithreads -Duselongdouble -DDEBUGGING=-g'
  hint=recommended, useposix=true, d_sigaction=define
  useithreads=undef, usemultiplicity=undef
  use64bitint=define, use64bitall=define, uselongdouble=define
  usemymalloc=n, bincompat5005=undef
  Compiler​:
  cc='cc', ccflags ='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
  optimize='-O2 -g',
  cppflags='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
  ccversion='', gccversion='4.8.2', gccosandvers=''
  intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
  d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
  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 -L/usr/local/lib'
  libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/4.8/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=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
  perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
  libc=libc-2.17.so, so=so, useshrplib=false, libperl=libperl.a
  gnulibc_version='2.17'
  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'

Characteristics of this binary (from libperl)​:
  Compile-time options​: HAS_TIMES PERLIO_LAYERS PERL_DONT_CREATE_GVSV
  PERL_HASH_FUNC_ONE_AT_A_TIME_HARD PERL_MALLOC_WRAP
  PERL_NEW_COPY_ON_WRITE PERL_PRESERVE_IVUV
  PERL_USE_DEVEL USE_64_BIT_ALL USE_64_BIT_INT
  USE_LARGE_FILES USE_LOCALE USE_LOCALE_COLLATE
  USE_LOCALE_CTYPE USE_LOCALE_NUMERIC USE_LONG_DOUBLE
  USE_PERLIO USE_PERL_ATOF
  Built under linux
  Compiled at Mar 4 2014 08​:43​:13
  %ENV​:
  PERL5LIB="/tmp/loop_over_bdir-bQg7EB/Number-Tolerant-1.703-Orx3Zj/blib/arch​:/tmp/loop_over_bdir-bQg7EB/Number-Tolerant-1.703-Orx3Zj/blib/lib"
  PERL5OPT=""
  PERL5_CPANPLUS_IS_RUNNING="1758"
  PERL5_CPAN_IS_RUNNING="1758"
  @​INC​:
  /tmp/loop_over_bdir-bQg7EB/Number-Tolerant-1.703-Orx3Zj/blib/arch
  /tmp/loop_over_bdir-bQg7EB/Number-Tolerant-1.703-Orx3Zj/blib/lib
  /home/sand/src/perl/repoperls/installed-perls/perl/v5.19.8-514-ge0e1be5/127e/lib/site_perl/5.19.9/x86_64-linux-ld
  /home/sand/src/perl/repoperls/installed-perls/perl/v5.19.8-514-ge0e1be5/127e/lib/site_perl/5.19.9
  /home/sand/src/perl/repoperls/installed-perls/perl/v5.19.8-514-ge0e1be5/127e/lib/5.19.9/x86_64-linux-ld
  /home/sand/src/perl/repoperls/installed-perls/perl/v5.19.8-514-ge0e1be5/127e/lib/5.19.9
  .

--
andreas

From @khwilliamson

Fixed by 1ea8b7f

Interestingly (to me anyway), this did not show up with g++, nor did it show up with a DEBUGGING build
--
Karl Williamson

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

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