Learned monks,

I am working on a test script: 

#!/usr/bin/perl
use strict; use warnings;
use Test::More;

my @compressors = qw/ Foo::Bar Compress::Snappy Compress::LZ4 /;
for my $compressor ( @compressors ) {
    note "   Testing with $compressor";
    if ( ! eval "use $compressor; 1;" ) {
        note "   Cannot load $compressor - skipping tests";
        next;
    }
    note "   Ready";
}

[download]
Output: 
#    Testing with Foo::Bar
#    Cannot load Foo::Bar - skipping tests
#    Testing with Compress::Snappy
#    Ready
#    Testing with Compress::LZ4
Prototype mismatch: sub main::compress ($) vs ($;$) at /perl5/perlbrew
+/perls/perl-5.22.1/lib/5.22.1/Exporter.pm line 66.
 at (eval 8) line 1.
Prototype mismatch: sub main::decompress ($) vs ($;$) at /perl5/perlbr
+ew/perls/perl-5.22.1/lib/5.22.1/Exporter.pm line 66.
 at (eval 8) line 1.
Prototype mismatch: sub main::uncompress ($) vs ($;$) at /perl5/perlbr
+ew/perls/perl-5.22.1/lib/5.22.1/Exporter.pm line 66.
 at (eval 8) line 1.
#    Ready

[download]

I understand why the warning is printed (the two modules have identical APIs), and I know I could work around it by making separate test files, but that's not desirable. Also, it's just a warning and the subs work fine when the second module is loaded, but the warnings are undesirable.

I have searched but not found a way to clear the symbol table so the second time through the loop the subs can be imported without the warning. I can't use any non-core modules for the solution. Any help greatly appreciated!

The way forward always starts with a minimal test.

In reply to Resolving 'prototype mismatch' warning by 1nickt

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