develooper Front page | perl.perl5.porters | Postings from January 2014

[perl #121050] hang from duff prototype

Thread Next
From:
Zefram
Date:
January 21, 2014 21:42
Subject:
[perl #121050] hang from duff prototype
Message ID:
rt-4.0.18-6389-1390340558-826.121050-75-0@perl.org
# New Ticket Created by  Zefram 
# Please include the string:  [perl #121050]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=121050 >



This is a bug report for perl from zefram@fysh.org,
generated with the help of perlbug 1.39 running under perl 5.19.7.


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

$ cat t0
sub foo ( 
)
{ print 123; }
foo();
$ perl5.19.7 t0

The above causes perl to hang.  It's behaved like that since 5.19.2.
Earlier perls show different interpretations of the code:

$ perl5.19.1 -MO=Deparse t0
sub foo () {
    print 123;
}
foo;
t0 syntax OK
$ perl5.17.4 -MO=Deparse t0
sub foo () {
    print 123;
}
foo;
t0 syntax OK
$ perl5.17.3 -MO=Deparse t0
sub print () {
    print 123;
}
foo();
t0 syntax OK

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.19.7:

Configured by zefram at Mon Dec 23 19:18:49 GMT 2013.

Summary of my perl5 (revision 5 version 19 subversion 7) configuration:
   
  Platform:
    osname=linux, osvers=3.2.0-4-amd64, archname=x86_64-linux-thread-multi
    uname='linux barba.rous.org 3.2.0-4-amd64 #1 smp debian 3.2.46-1 x86_64 gnulinux '
    config_args='-des -Dprefix=/home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52 -Duselargefiles -Dusethreads -Uafs -Ud_csh -Uusesfio -Uusenm -Duseshrplib -Dusedevel -Uversiononly -Ui_db'
    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='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.7.2', 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='cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.15'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/lib/5.19.7/x86_64-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector'


---
@INC for perl 5.19.7:
    /home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/lib/site_perl/5.19.7/x86_64-linux-thread-multi
    /home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/lib/site_perl/5.19.7
    /home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/lib/5.19.7/x86_64-linux-thread-multi
    /home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/lib/5.19.7
    .

---
Environment for perl 5.19.7:
    HOME=/home/zefram
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/zefram/usr/perl/perl_install/perl-5.19.7-i64-f52/bin:/home/zefram/usr/perl/util:/home/zefram/pub/x86_64-unknown-linux-gnu/bin:/home/zefram/pub/common/bin:/usr/bin:/bin:/usr/local/bin:/usr/games
    PERL_BADLANG (unset)
    SHELL=/usr/bin/zsh


Thread Next


nntp.perl.org: Perl Programming lists via nntp and http.
Comments to Ask Bjørn Hansen at ask@perl.org | Group listing | About