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[perl #56150] return return

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From:
Nicholas Clark
Date:
June 20, 2008 08:56
Subject:
[perl #56150] return return
Message ID:
rt-3.6.HEAD-6656-1213974267-135.56150-75-0@perl.org
# New Ticket Created by  Nicholas Clark 
# Please include the string:  [perl #56150]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=56150 >



This is a bug report for perl from nick@ccl4.org,
generated with the help of perlbug 1.39 running under perl 5.11.0.


-----------------------------------------------------------------
[Please describe your issue here]

$ ./perl -Ilib -e 'sub foo {return return}'
$

How come this isn't a syntax error? It can't possibly do anything useful.
(Actually, it seems that anything can be passed the return value of return.
C<print return> works just fine).

Nicholas Clark

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.11.0:

Configured by nick at Tue Jun 17 16:49:28 BST 2008.

Summary of my perl5 (revision 5 version 11 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.6.16.29-xenu, archname=x86_64-linux-stdio
    uname='linux zazen 2.6.16.29-xenu #1 smp tue jan 9 00:53:46 gmt 2007 x86_64 gnulinux '
    config_args='-Dusedevel=y -Dcc=ccache gcc -Dld=gcc -Ubincompat5005 -Uinstallusrbinperl -Dcf_email=nick@ccl4.org -Dperladmin=nick@ccl4.org -Dinc_version_list=  -Dinc_version_list_init=0 -Doptimize=-g -Uusethreads -Uuse64bitint -Uusemymalloc -Dprefix=~/Sandpit/snap5.11.x-34070 -Dinstallman1dir=none -Dinstallmabn3dir=none -de -Uuserelocatableinc -Uuseperlio'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=undef
    useperlio=undef, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='ccache gcc', ccflags ='-DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-g',
    cppflags='-DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.1.2 20061115 (prerelease) (Debian 4.1.1-21)', 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='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64
    libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
    libc=/lib/libc-2.3.6.so, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.3.6'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -g -L/usr/local/lib -fstack-protector'

Locally applied patches:
    DEVEL

---
@INC for perl 5.11.0:
    lib
    /home/nick/Sandpit/snap5.11.x-34070/lib/perl5/5.11.0/x86_64-linux-stdio
    /home/nick/Sandpit/snap5.11.x-34070/lib/perl5/5.11.0
    /home/nick/Sandpit/snap5.11.x-34070/lib/perl5/site_perl/5.11.0/x86_64-linux-stdio
    /home/nick/Sandpit/snap5.11.x-34070/lib/perl5/site_perl/5.11.0
    .

---
Environment for perl 5.11.0:
    HOME=/home/nick
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/nick/bin:/usr/local/bin:/usr/bin:/bin:/usr/games:/usr/local/sbin:/sbin:/usr/sbin
    PERL_BADLANG (unset)
    SHELL=/bin/bash


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