This is a bug report for perl from jjcassidy@gmail.com,
generated with the help of perlbug 1.39 running under perl 5.12.3.
-----------------------------------------------------------------
The following code did not work as expected:
my $each_action = shift if @_ == 1;
my %params = @_ unless $each_action;
until I put it into this form:
my ( %params, $each_action );
if ( @_ == 1 ) {
$each_action = shift;
}
else {
%params = @_;
}
But not only that, until I found this, this failure affected other calling
lexical scopes and reset variables to their initial value, instead of the
value that they had acquired levels of closures down:
sub search {
my ( $self, $test ) = @_;
my $where;
my $found = 0;
my $counter = 0;
$self->descend( pre_each => sub {
my $lvl = shift;
my $ev_return
= $lvl->each_value( sub {
$counter++;
my ( $name, $value ) = @_;
say "\$name=$name";
say "\$value=$value";
return 1 unless $found = $test->( $value );
$where = { key => $lvl, name => $name, value => $value };
# when any intermediate function sees QUIT_FLAG, it
# knows to return control to the method that called it.
return QUIT_FLAG;
});
say "\$found=$found";
say "\$where=$where";
return $ev_return;
});
say "\$counter=$counter";
say "\$found=$found";
say "\$where=$where";
return unless $found;
return $where;
}
They retained their value set in the each_value closure until the declaring
scope. When I fixed the parameter code in each_level, it stopped wiping out
the $counter, $found, and $where variables.
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=high
---
Site configuration information for perl 5.12.3:
Configured by 1 at Sun May 15 16:53:01 2011.
Summary of my perl5 (revision 5 version 12 subversion 3) configuration:
Platform:
osname=MSWin32, osvers=5.1, archname=MSWin32-x86-multi-thread
uname='Win32 strawberryperl 5.12.3.0 #1 Sun May 15 09:44:53 2011 i386'
config_args='undef'
hint=recommended, useposix=true, d_sigaction=undef
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='gcc', ccflags =' -s -O2 -DWIN32 -DHAVE_DES_FCRYPT
-DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS
-fno-strict-aliasing -mms-bitfields -DPERL_MSVCRT_READFIX',
optimize='-s -O2',
cppflags='-DWIN32'
ccversion='', gccversion='4.4.3', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='long
long', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='g++', ldflags ='-s -L"D:\strawberry\perl\lib\CORE"
-L"D:\strawberry\c\lib"'
libpth=D:\strawberry\c\lib D:\strawberry\c\i686-w64-mingw32\lib
libs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32
-ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr
-lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
perllibs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool
-lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid
-lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
libc=, so=dll, useshrplib=true, libperl=libperl512.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags='-mdll -s -L"D:\strawberry\perl\lib\CORE"
-L"D:\strawberry\c\lib"'
Locally applied patches:
---
@INC for perl 5.12.3:
D:/strawberry/perl/site/lib
D:/strawberry/perl/vendor/lib
D:/strawberry/perl/lib
.
---
Environment for perl 5.12.3:
HOME (unset)
LANG (unset)
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=%SCSHAREDBIN%;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\strawberry\c\bin;D:\strawberry\perl\site\bin;D:\strawberry\perl\bin;C:\Program
Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft
SQL Server\100\DTS\Binn\;C:\Program Files\Microsoft SQL
Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Microsoft
SQL Server\80\Tools\Binn\
PERL_BADLANG (unset)
PERL_JSON_BACKEND=JSON::XS
PERL_YAML_BACKEND=YAML
SHELL (unset)
RT for rt.cpan.org