[perl #95968] /aa and \b fail under some utf8 strings

# New Ticket Created by  karl williamson 
# Please include the string:  [perl #95968]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=95968 >



This is a bug report for perl from public@khwilliamson.com,
generated with the help of perlbug 1.39 running under perl 5.15.1.


-----------------------------------------------------------------
my $a = "\x{e2}A";
utf8::upgrade($a);
say $a =~ qr/ (?aa: \x{e2} \b A* ) /x;

This should succeed since "A" is a \w under /aa;
"\x{e2}" is not a \w under /aa
-----------------------------------------------------------------
---
Flags:
     category=core
     severity=high
---
Site configuration information for perl 5.15.1:

Configured by khw at Fri Jul 29 08:53:27 MDT 2011.

Summary of my perl5 (revision 5 version 15 subversion 1) configuration:
   Commit id: 18e84e8166b57276c5ac3cd4017c3afad5a039b3
   Platform:
     osname=linux, osvers=2.6.35-30-generic-pae, 
archname=i686-linux-thread-multi-64int-ld
     uname='linux karl 2.6.35-30-generic-pae #54-ubuntu smp tue jun 7 
20:28:33 utc 2011 i686 gnulinux '
     config_args='-des -Dprefix=/home/khw/blead -Dusedevel 
-D'optimize=-ggdb3' -A'optimize=-ggdb3' -A'optimize=-O0' -Dman1dir=none 
-Dman3dir=none -DDEBUGGING -Dusemorebits -Dusethreads'
     hint=recommended, useposix=true, d_sigaction=define
     useithreads=define, usemultiplicity=define
     useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
     use64bitint=define, use64bitall=undef, uselongdouble=define
     usemymalloc=n, bincompat5005=undef
   Compiler:
     cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING 
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include 
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
     optimize='-O0 -ggdb3',
     cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING 
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
     ccversion='', gccversion='4.4.5', gccosandvers=''
     intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
     d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
     ivtype='long long', ivsize=8, nvtype='long double', nvsize=12, 
Off_t='off_t', lseeksize=8
     alignbytes=4, prototype=define
   Linker and Libraries:
     ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
     libpth=/usr/local/lib /lib/../lib /usr/lib/../lib /lib /usr/lib 
/usr/lib/i686-linux-gnu
     libs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
     perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
     libc=/lib/libc-2.12.1.so, so=so, useshrplib=false, libperl=libperl.a
     gnulibc_version='2.12.1'
   Dynamic Linking:
     dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
     cccdlflags='-fPIC', lddlflags='-shared -ggdb3 -ggdb3 -O0 
-L/usr/local/lib -fstack-protector'

Locally applied patches:


---
@INC for perl 5.15.1:
     /home/khw/perl/blead/lib
 
/home/khw/blead/lib/perl5/site_perl/5.15.1/i686-linux-thread-multi-64int-ld
     /home/khw/blead/lib/perl5/site_perl/5.15.1
     /home/khw/blead/lib/perl5/5.15.1/i686-linux-thread-multi-64int-ld
     /home/khw/blead/lib/perl5/5.15.1
     /home/khw/blead/lib/perl5/site_perl
     .

---
Environment for perl 5.15.1:
     HOME=/home/khw
     LANG=en_US.UTF-8
     LANGUAGE=en_US:en
     LD_LIBRARY_PATH (unset)
     LOGDIR (unset)
 
PATH=/home/khw/bin:/home/khw/print/bin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/usr/games:/home/khw/cxoffice/bin
     PERL5OPT=-w
     PERL_BADLANG (unset)
     SHELL=/bin/ksh

• [perl #95968] /aa and \b fail under some utf8 strings by Karl Williamson via RT
• [perl #95968] /aa and \b fail under some utf8 strings by karl williamson