Hello,
I'm unclear about your sample code, but if you did want to send the
output of say open TEST, "|/bin/cat" to the browser, your Perl version
should be configured with sfio. The information you've pasted shows that
d_sfio=undef. If you did want to do something like "/bin/cat notpasswd"
to the browser, you could use backticks: print `/bin/cat notpasswd`. As
this is handled with forking, it's not recommended for performance.
mod_perl ties STDOUT and STDIN to the Apache request (the socket from
which the request originated). STDERR is tied to the error_log.
The Test::* modules are designed to be run once from what I understand.
Invoking them repeatedly without resetting Test::* globals inside the
persistent mod_perl environment will most likely cause problems, any
combination of which could be the cause of the segfaults.
To deal with these issues, you can try Apache::Test. Pass an Apache
request to the plan method to tie STDOUT to the Apache request. The
-withtestmore tag makes Apache::Test use Test::More and not Test.pm,
which is the default functionality.
You could set up tests like this with a handler:
### TestBroken.pm ###
package TestBroken;
use strict;
# Note the hyphen before the tag.
# You don't have to 'use Test::More' here because Apache::Test
# will use it behind the scenes for you.
use Apache::Test qw(-withtestmore);
use Apache2::RequestRec ();
use Apache2::Const -compile => qw(OK);
use Broken; # Where you set up tests
sub handler{
my $r = shift;
plan $r, tests => 3; # Pass $r to plan
is_bigger( 2, 1, '2 is > 1' );
is_bigger( 20, 10, '20 is > 10' );
is_bigger( 10, 100, '10 is !> 100' );
return Apache2::Const::OK;
}
1;
### end TestBroken.pm ###
### Broken.pm ###
package Broken;
use strict;
use base 'Exporter';
our @EXPORT = qw( is_bigger );
use Test::Builder;
our $Test = Test::Builder->create();
sub is_bigger($$;$){
my ( $first_num, $second_num, $dsc ) = @_;
return (
$Test->ok( "$first_num" > "$second_num", $dsc ) ||
$Test->diag(" $first_num is not bigger than $second_num ")
);
}
1;
### End Broken.pm ###
Another option is to 'use Test::More' explicitly:
(Do note that I have managed to segfault this)
use Apache::Test qw(:withtestmore);
use Test::More;
And finally, if it works for you, to use Test.pm and not Test::More with
just
use Apache::Test
There're a few tricky details in each case and there's no guarantee
about full Test::More functionality so be aware:
http://search.cpan.org/~phred/mod_perl-2.0.5/Apache-Test/lib/Apache/Test.pm
g.
On 12/6/2011 9:40 AM, Merlyn Kline wrote:
(I have read the bug reporting guides but unfortunately cannot follow all the
instructions because I am missing Apache::TestReportPerl and do not have the
necessary permissions to install it, nor to rebuild perl with debugging turned
on. Hopefully I have provided enough information.)
I have discovered that simply "use"ing Test::More in a mod_perl script causes
my apache to segfault. I originally reported this to the author of Test::More (see
https://rt.cpan.org/Public/Bug/Display.html?id=69687) but now believe the problem to have
wider scope. By progressively removing code from my original example I have reduced it to
the trivial example that follows.
To REPRODUCE the problem, you need a Broken.pm module like this:
package Broken;
my $Testout;
create(); sub create { # Insert "{#" at the start of this line and the
segfault goes away
open( $Testout, ">&STDOUT" ) or die "Can't dup STDOUT: $!";
}
and a script like this:
#!/usr/bin/perl -w
use Broken;
print "Content-Type: text/html\r\n\r\nhello ";
open TEST, "|/bin/cat";
close TEST;
print "world\n";
Holding down F5 to generate reloads soon causes a segfault (my server is
configured for five mod_perl processes).
Note that if the code to dup STDOUT is not in a sub then the fault seems to go
away.
Apache, mod_perl and perl version info appended.
I have found a similar(ish) report at
http://http://stackoverflow.com/questions/4413411/ but no resolution. Note that
removing from my example the code that opens the pipe to cat, solves the
problem - this is the similarity here (and I realise that's likely a red
herring).
Merlyn Kline
Apache/2.2.15 (Unix) DAV/2 mod_ssl/2.2.15 OpenSSL/1.0.0-fips mod_perl/2.0.4
Perl/v5.10.1 configured -- resuming normal operations
Summary of my perl5 (revision 5 version 10 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.18-194.26.1.el5,
archname=x86_64-linux-thread-multi
uname='linux x86-003.build.bos.redhat.com 2.6.18-194.26.1.el5 #1 smp fri
oct 29 14:21:16 edt 2010 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
-DDEBUGGING=-g -Dversion=5.10.1 -Dmyhostname=localhost
-Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr
-Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5
-Dsitearch=/usr/local/lib64/perl5 -Dprivlib=/usr/share/perl5
-Darchlib=/usr/lib64/perl5 -Dvendorlib=/usr/share/perl5/vendor_perl
-Dvendorarch=/usr/lib64/perl5/vendor_perl -Dinc_version_list=5.10.0
-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 -Uversiononly
-Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto
-Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_prot
o -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin'
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 -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64',
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 -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.4.4 20100726 (Red Hat 4.4.4-13)',
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 =' -fstack-protector'
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='2.12'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E
-Wl,-rpath,/usr/lib64/perl5/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'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_64_BIT_ALL
USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES
USE_PERLIO USE_REENTRANT_API
Built under linux
Compiled at Apr 19 2011 15:27:31
