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[ID 20000415.005] perlsub (Constant functions) suggest use ofdeprecated $]
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From:
David Dyck
Date:
April 15, 2000 11:42
Subject:
[ID 20000415.005] perlsub (Constant functions) suggest use ofdeprecated $]
Message ID:
200004151842.LAA16826@dd.tc.fluke.com
This is a bug report for perl from dcd@tc.fluke.com,
generated with the help of perlbug 1.28 running under perl v5.6.0.
-----------------------------------------------------------------
[Please enter your report here]
The documentation in perlvar.pod for the perl variable $], states:
"The use of this variable is deprecated."
But in perlsub/"Constant Functions" a method of thwarting
the inlining mechanism while preserving the prototype
is suggested using $];
sub not_inlined () {
23 if $];
}
I think this is inconsistent.
Could someone please suggest a 'better' example for
perlsub/"Constant Functions" to use here.
Thanks,
David Dyck
I came across this while working with some code like
the following perl code which prints the following diagnostics.
use diagnostics;
sub d() { return "one\n"; }
undef &d;
Constant subroutine d undefined at ebug.pl line 4 (#1)
(W misc) You undefined a subroutine which had previously been eligible for
inlining. See perlsub/"Constant Functions" for commentary and
workarounds.
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=docs
severity=low
---
Site configuration information for perl v5.6.0:
Configured by dcd at Thu Mar 23 14:52:39 PST 2000.
Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
Platform:
osname=linux, osvers=2.3.99-pre3, archname=i686-linux
uname='linux dd 2.3.99-pre3 #1 wed mar 22 10:40:34 pst 2000 i686 '
config_args='-Doptimize=-O3 -g -de -Dcf_email=dcd@tc.fluke.com'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
useperlio=undef d_sfio=undef uselargefiles=define
use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
Compiler:
cc='cc', optimize='-O3 -g', gccversion=2.7.2.3
cppflags='-DDEBUGGING -I/usr/local/include'
ccflags ='-DDEBUGGING -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
stdchar='char', d_stdstdio=define, usevfork=false
intsize=4, longsize=4, ptrsize=4, doublesize=8
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=4
alignbytes=4, usemymalloc=n, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lgdbm -ldbm -ldb -ldl -lm -lc
libc=/lib/libc.so.5.4.44, 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 v5.6.0:
/usr/local/lib/perl5/5.6.0/i686-linux
/usr/local/lib/perl5/5.6.0
/usr/local/lib/perl5/site_perl/5.6.0/i686-linux
/usr/local/lib/perl5/site_perl/5.6.0
/usr/local/lib/perl5/site_perl
.
---
Environment for perl v5.6.0:
HOME=/home/dcd
LANG (unset)
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/dcd/bin:/sbin:/usr/local/bin:/bin:/usr/bin:/usr/X11/bin:/usr/games:/usr/local/samba:/home/hobbes/tools/scripts:/home/hobbes/tools/linux:/usr0/hobbes/tools/scripts:/usr0/dcd/bin:/apps/general/bin:/usr/public
PERL_BADLANG (unset)
SHELL=/bin/bash
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[ID 20000415.005] perlsub (Constant functions) suggest use ofdeprecated $]
by David Dyck