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[perl #56874] maybe small error in perlxs.pod example

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From:
perlbug-followup
Date:
July 13, 2008 09:00
Subject:
[perl #56874] maybe small error in perlxs.pod example
Message ID:
rt-3.6.HEAD-8814-1215897170-105.56874-75-0@perl.org
# New Ticket Created by  ajrh@ajrh.net 
# Please include the string:  [perl #56874]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=56874 >



This is a bug report for perl from ajrh@ajrh.net,
generated with the help of perlbug 1.36 running under perl 5.10.0.


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

In the perlxs example (patched below), isn't the newmortal'd SV
being memory-leaked when undef is returned?


--- perlxs.pod.Orig	2008-07-12 13:14:11.000000000 -0400
+++ perlxs.pod	2008-07-12 13:16:16.974788521 -0400
@@ -1092,12 +1092,12 @@
           char *  host
 	PREINIT:
           time_t  timep;
           bool_t x;
         CODE:
-          ST(0) = sv_newmortal();
           if( rpcb_gettime( host, &timep ) ){
+               ST(0) = sv_newmortal();
                sv_setnv( ST(0), (double)timep);
           }
           else{
                ST(0) = &PL_sv_undef;
           }


[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=docs
    severity=medium
---
Site configuration information for perl 5.10.0:

Configured by Debian Project at Sat Jun 21 21:25:02 UTC 2008.

Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.6.25.7, archname=i486-linux-gnu-thread-multi
    uname='linux ninsei 2.6.25.7 #1 smp preempt fri jun 20 14:17:13 pdt 2008 i686 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.10 -Darchlib=/usr/lib/perl/5.10 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.10.0 -Dsitearch=/usr/local/lib/perl/5.10.0 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=-g -Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.10.0 -Dd_dosuid -des'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2 -g',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='4.3.1', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /usr/lib64
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=/lib/libc-2.7.so, so=so, useshrplib=true, libperl=libperl.so.5.10.0
    gnulibc_version='2.7'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib'

Locally applied patches:
    

---
@INC for perl 5.10.0:
    /home/ajrh/lib/perl
    /home/work/lib/perl
    /home/work/lib/perl/linux-debian-x32
    /apps/dam/conf/ajrh/linux-debian-x32/perl
    /etc/perl
    /usr/local/lib/perl/5.10.0
    /usr/local/share/perl/5.10.0
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.10
    /usr/share/perl/5.10
    /usr/local/lib/site_perl
    .

---
Environment for perl 5.10.0:
    HOME=/home/ajrh
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LD_LIBRARY_PATH=/apps/dam/conf/ajrh/linux-debian-x32/lib64:/apps/dam/conf/ajrh/linux-debian-x32/lib32
    LOGDIR (unset)
    PATH=.:/home/ajrh/bin:/home/ajrh/bin/linux-debian-x32:/home/work/fia/scripts:/home/work/scripts:/apps/dam/conf/ajrh/linux-debian-x32/bin:/apps/dam/bin/linux-debian-x32:/usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin
    PERLLIB=/home/ajrh/lib/perl:/home/work/lib/perl:/home/work/lib/perl/linux-debian-x32:/apps/dam/conf/ajrh/linux-debian-x32/perl
    PERL_BADLANG (unset)
    SHELL=/bin/zsh


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