Stringification doesn't seem to apply to regexp arguments

[p5pRT]

Migrated from rt.perl.org#1759 (status was 'resolved')

Searchable as RT1759$

[p5pRT]

From dhd@plcom.on.ca

Hi,

Applying capturing regular expressions to references does something
rather strange​:

[dhd@​willow]~ $ perl -le '$f=[1]; print $f; while ($f =~ /(\w+)/g) {print $1}'
ARRAY(0x80cb97c)
øl@​ø
@​80cb97c

It's evidently failing to stringify the scalar. As another example (and this
one may be more annoying since we usually don't mess with the stringified
form of bare references)​:

[dhd@​willow]~ $ perl -le 'package Foo; use overload q("") => sub { "FOO" }; $f = bless [1], "Foo"; print "stringify -> $f"; while ($f =~ /(\w+)/g) {print $1}'
stringify -> FOO
Øé

This is with the Debian GNU/Linux package of Perl 5.005_03.

Perl Info

Site configuration information for perl 5.00503:

Configured by torin at Wed Sep 22 00:18:38 PDT 1999.

Summary of my perl5 (5.0 patchlevel 5 subversion 3) configuration:
  Platform:
    osname=linux, osvers=2.0.36, archname=i386-linux
    uname='linux perv 2.0.36 #2 wed nov 18 03:00:48 pst 1998 i686 unknown '
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef useperlio=undef d_sfio=undef
  Compiler:
    cc='cc', optimize='-O2', gccversion=2.95.1 19990809 (prerelease)
    cppflags='-Dbool=char -DHAS_BOOL -D_REENTRANT -DDEBIAN -I/usr/local/include'
    ccflags ='-Dbool=char -DHAS_BOOL -D_REENTRANT -DDEBIAN -I/usr/local/include'
    stdchar='char', d_stdstdio=undef, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lndbm -lgdbm -ldbm -ldb -ldl -lm -lc -lposix -lcrypt
    libc=, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:
    


@INC for perl 5.00503:
    /usr/lib/perl5/5.005/i386-linux
    /usr/lib/perl5/5.005
    /usr/local/lib/site_perl/i386-linux
    /usr/local/lib/site_perl
    /usr/lib/perl5
    .


Environment for perl 5.00503:
    HOME=/home/dhd
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games:/usr/games
    PERL_BADLANG (unset)
    SHELL=/bin/bash

[p5pRT]

From [Unknown Contact. See original ticket]

David Huggins-Daines writes​:

[dhd@​willow]~ $ perl -le '$f=[1]; print $f; while ($f =~ /(\w+)/g) {print $1}'
ARRAY(0x80cb97c)
øl@​ø
@​80cb97c

It's evidently failing to stringify the scalar.

Evidently, not, as omiting //g shows. Something is fishy with pos()
on a reference. Is it wise to just plain prohibit it?

Ilya

[p5pRT]

From [Unknown Contact. See original ticket]

Another...

David Huggins-Daines writes​:

[dhd@​willow]~ $ perl -le '$f=[1]; print $f; while ($f =~ /(\w+)/g) {print $1}'
ARRAY(0x80cb97c)
xl@​x
@​80cb97c

It's evidently failing to stringify the scalar.

Evidently, not, as omiting //g shows. Something is fishy with pos()
on a reference. Is it wise to just plain prohibit it?

Ilya

[p5pRT]

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