[perl #68764] perl panic caused by large integer in precision for POSIX::sprintf

# New Ticket Created by  Marcela Maslanova 
# Please include the string:  [perl #68764]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=68764 >


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


-----------------------------------------------------------------
[Please enter your report here]
Description of problem:
perl panics if large number is used in the format section for sprintf.

Steps to Reproduce:
$ perl -MPOSIX -e 'POSIX::sprintf("%.2147483640f", 1);'

Actual results:

panic: malloc at ../../lib/POSIX.pm (autosplit into
../../lib/auto/POSIX/sprintf.al) line 387

Expected results:

exits with a zero

Additional info:

perl also seems to hang for a long time with using the slightly smaller number
of 214748369

Version of perl: 5.10.0
Version of POSIX: 1.16

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=library
    severity=low
---
---
This perlbug was built using Perl 5.10.0 in the Fedora build system.
It is being executed now by Perl 5.10.0 - Tue Jul 28 03:44:43 EDT 2009.

Site configuration information for perl 5.10.0:

Configured by Red Hat, Inc. at Tue Jul 28 03:44:43 EDT 2009.

Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.6.18-128.2.1.el5, archname=x86_64-linux-thread-multi
    uname='linux x86-2.fedora.phx.redhat.com 2.6.18-128.2.1.el5 #1 smp wed jul 8 11:54:47 edt 2009 x86_64 x86_64 x86_64 gnulinux '
    config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Accflags=-DPERL_USE_SAFE_PUTENV -Dversion=5.10.0 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dprivlib=/usr/lib/perl5/5.10.0 -Dsitelib=/usr/local/lib/perl5/site_perl/5.10.0 -Dvendorlib=/usr/lib/perl5/vendor_perl/5.10.0 -Darchlib=/usr/lib64/perl5/5.10.0/x86_64-linux-thread-multi -Dsitearch=/usr/local/lib64/perl5/site_perl/5.10.0/x86_64-linux-thread-multi -Dvendorarch=/usr/lib64/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi -Dinc_version_list=none -Darchname=x86_64-linux-thread-multi -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Duseshrplib -Dusethreads -Duseithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversion!
 only -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin -Dotherlibdirs=/usr/lib/perl5/site_perl'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
    optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -I/usr/include/gdbm'
    ccversion='', gccversion='4.4.1 20090725 (Red Hat 4.4.1-3)', 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 =''
    libpth=/usr/local/lib64 /lib64 /usr/lib64
    libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.10.90'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/usr/lib64/perl5/5.10.0/x86_64-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'

Locally applied patches:
---
@INC for perl 5.10.0:
    /usr/local/lib64/perl5/site_perl/5.10.0/x86_64-linux-thread-multi
    /usr/local/lib/perl5/site_perl/5.10.0
    /usr/lib64/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi
    /usr/lib/perl5/vendor_perl/5.10.0
    /usr/lib/perl5/vendor_perl
    /usr/lib64/perl5/5.10.0/x86_64-linux-thread-multi
    /usr/lib/perl5/5.10.0
    /usr/lib/perl5/site_perl
    .

---
Environment for perl 5.10.0:
    HOME=/home/marca
    LANG=en_US.UTF-8
    LANGUAGE=
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/lib64/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/games:/usr/local/sbin:/usr/sbin:/sbin:/home/marca/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [perl #68764] perl panic caused by large integer in precision for POSIX::sprintf by Marcela Maslanova
• Re: [perl #68764] perl panic caused by large integer in precisionfor POSIX::sprintf by Zefram