[ID 20000331.003] Sort subroutine single nonsingle value

This is a bug report for perl from adelton@fi.muni.cz,
generated with the help of perlbug 1.28 running under perl v5.6.0.


-----------------------------------------------------------------
[Please enter your report here]

Please consider this simple script

	sub czcmp
		{ return 0; }
	sub czsort
		{ sort { czcmp($a, $b); } @_; }		## this is line 4
	my @a = czsort(1, 2);

The script fails with

	Sort subroutine didn't return single value at tst line 4.

which IMHO shouldn't -- I simply declare a block and call
a function there, but the sort somehow seems to catch that @_. If I call
it with just czsort(1), the error is not there.

Under 5.005_03 and previous, this code (taken from Cz::Sort module)
works fine. It's simple to workaround it but I still think it is
a bug, since nor perldelta nor perlfunc seem to suggest that this
use of sort is not allowed.

Yours,

Honza Pazdziora
adelton@fi.muni.cz

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=medium
---
Site configuration information for perl v5.6.0:

Configured by adelton at Fri Mar 24 18:05:50 MET 2000.

Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
  Platform:
    osname=solaris, osvers=2.7, archname=sun4-solaris
    uname='sunos theseus 5.7 generic sun4u sparc sunw,ultra-2 '
    config_args=''
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=undef 
    use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
  Compiler:
    cc='gcc', optimize='-O3', gccversion=egcs-2.91.66 19990314 (egcs-1.1.2 release)
    cppflags='-fno-strict-aliasing'
    ccflags ='-fno-strict-aliasing'
    stdchar='char', d_stdstdio=define, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=4
    alignbytes=8, usemymalloc=y, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =''
    libpth=/lib /usr/lib /usr/ccs/lib
    libs=-lsocket -lnsl -ldl -lm -lc -lcrypt -lsec
    libc=/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-fPIC', lddlflags='-G'

Locally applied patches:
    

---
@INC for perl v5.6.0:
    /export/packages/perl-5.6.0/lib/5.6.0/sun4-solaris
    /export/packages/perl-5.6.0/lib/5.6.0
    /export/packages/perl-5.6.0/lib/site_perl/5.6.0/sun4-solaris
    /export/packages/perl-5.6.0/lib/site_perl/5.6.0
    /export/packages/perl-5.6.0/lib/site_perl
    .

---
Environment for perl v5.6.0:
    HOME=/home/adelton
    LANG (unset)
    LANGUAGE (unset)
    LC_CTYPE=cs
    LD_LIBRARY_PATH=/usr/lib:/usr/ucblib:/usr/openwin/lib:/packages/run/gcc-2.5.7/lib:/packages/run/links/lib
    LOGDIR (unset)
    PATH=/usr/bin:/usr/sbin:/usr/ccs/bin:/usr/openwin/bin:/packages/run/modules-2.0/bin:/export/packages/perl-5.6.0/bin:/packages/run/links/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [ID 20000331.003] Sort subroutine single nonsingle value by Jan Pazdziora
• Re: [ID 20000331.003] Sort subroutine single nonsingle value by Gurusamy Sarathy