[ID 20000428.006] panic using $obj->$coderef()

This is a bug report for perl from jes@presto.med.upenn.edu,
generated with the help of perlbug 1.28 running under perl v5.6.0.


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[Please enter your report here]

I was playing with lvalue subs in 5.6 and I noticed this:

 file: x.perl:
     1	
     2	$obj = bless { };                # an object
     3	
     4	$coderef = sub:lvalue { $x };    # an lvalue coderef
     5	
     6	&$coderef($obj) = 10;            # ok
     7	
     8	print $obj->$coderef(), "\n";    # cool, it works
     9	
    10	$obj->$coderef() = 100;          # but this panics
    11	
    12	print $obj->$coderef(), "\n";

  $ perl x.perl
  panic: unexpected optree near method call at x.perl line 10, near "100;"
  Execution of x.perl aborted due to compilation errors.


[Please do not change anything below this line]
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---
Flags:
    category=core
    severity=low
---
Site configuration information for perl v5.6.0:

Configured by jes at Tue Apr 25 22:01:57 EDT 2000.

Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.2.13-7mdk, archname=i586-linux
    uname='linux sparky.home-net 2.2.13-7mdk #1 wed sep 15 18:02:18 cest 1999 i586 unknown '
    config_args='-Uinstallusrbinperl -de'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=define 
    use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
  Compiler:
    cc='cc', optimize='-O2', gccversion=pgcc-2.91.66 19990314 (egcs-1.1.2 release)
    cppflags='-fno-strict-aliasing -I/usr/local/include'
    ccflags ='-fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
    stdchar='char', d_stdstdio=define, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    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, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lndbm -lgdbm -ldb -ldl -lm -lc -lposix -lcrypt
    libc=/lib/libc-2.1.1.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:
    

---
@INC for perl v5.6.0:
    /usr/local/lib/perl5/5.6.0/i586-linux
    /usr/local/lib/perl5/5.6.0
    /usr/local/lib/perl5/site_perl/5.6.0/i586-linux
    /usr/local/lib/perl5/site_perl/5.6.0
    /usr/local/lib/perl5/site_perl
    .

---
Environment for perl v5.6.0:
    HOME=/home/jes
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/local/bin:/bin:/usr/bin::/usr/X11R6/bin:/home/jes/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [ID 20000428.006] panic using $obj->$coderef() by Joe Smith