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[perl #120410] -i warning not generated by #!

From:
Zefram
Date:
October 29, 2013 14:07
Subject:
[perl #120410] -i warning not generated by #!
Message ID:
rt-4.0.18-24527-1383055654-269.120410-75-0@perl.org
# New Ticket Created by  Zefram 
# Please include the string:  [perl #120410]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=120410 >



This is a bug report for perl from zefram@fysh.org,
generated with the help of perlbug 1.39 running under perl 5.18.1.


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

$ cat t0
#!/opt/perl/bin/perl -i
print defined($^I) ? "OK\n" : "FAIL\n";
$ /opt/perl/bin/perl -i ./t0
-i used with no filenames on the command line, reading from STDIN.
OK
$ ./t0
-i used with no filenames on the command line, reading from STDIN.
OK
$ /opt/perl/bin/perl ./t0
OK

If the -i option doesn't appear on the actual perl command line, it can
be picked up just fine from the #! line by perl's magic processing of it.
But the warning that comes from using -i without filenames only shows
up if the -i was on the real command line, either by explicit invocation
or by kernel #! processing.  I think getting -i from perl #! processing
should equally trigger the warning.

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.18.1:

Configured by root at Fri Aug 23 15:48:54 UTC 2013.

Summary of my perl5 (revision 5 version 18 subversion 1) configuration:
   
  Platform:
    osname=linux, osvers=3.2.0-0.bpo.3-amd64, archname=x86_64-linux-ld
    uname='linux ukmcwzefram.photobox.priv 3.2.0-0.bpo.3-amd64 #1 smp thu aug 23 07:41:30 utc 2012 x86_64 gnulinux '
    config_args='-des -Duseshrplib -Duse64bitint -Duselongdouble -Uusethreads -Uusemultiplicity -Dprefix=/opt/perl-5.18.1 -Dsiteprefix=/opt/perl-5.18.1 -Dvendorprefix=/opt/perl-5.18.1/vendor -Doptimize=-ggdb -O2 -Dcccdlflags=-fPIC -O2 -pipe'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=undef
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=define
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-ggdb -O2',
    cppflags='-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='long double', nvsize=16, Off_t='off_t', lseeksize=8
    alignbytes=16, 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 -ldl -lm -lcrypt -lutil -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
    libc=, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.13'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/opt/perl-5.18.1/lib/5.18.1/x86_64-linux-ld/CORE'
    cccdlflags='-fPIC -O2 -pipe', lddlflags='-shared -ggdb -O2 -L/usr/local/lib -fstack-protector'

Locally applied patches:
    

---
@INC for perl 5.18.1:
    /opt/perl-5.18.1/lib/site_perl/5.18.1/x86_64-linux-ld
    /opt/perl-5.18.1/lib/site_perl/5.18.1
    /opt/perl-5.18.1/vendor/lib/vendor_perl/5.18.1/x86_64-linux-ld
    /opt/perl-5.18.1/vendor/lib/vendor_perl/5.18.1
    /opt/perl-5.18.1/lib/5.18.1/x86_64-linux-ld
    /opt/perl-5.18.1/lib/5.18.1
    .

---
Environment for perl 5.18.1:
    HOME=/home/zefram
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/zefram/pub/x86_64-unknown-linux-gnu/bin:/home/zefram/pub/common/bin:/usr/bin:/bin:/usr/local/bin:/usr/games:/opt/geoip/bin:/opt/httpd/bin:/opt/perl/bin
    PERL_BADLANG (unset)
    SHELL=/usr/bin/zsh




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