If you can supply a reproducible test case then no doubt others could test and determine if it is indeed an MSWin32-only issue.

Actually I can (and just have) tested it out on Ubuntu, perl-5.34.0 and it's the same issue.

Here's an Inline::C demo of the problem:
Firstly, with the printf() statement commented out: 
use strict;
use warnings;

use Inline C => <<'EOC';

SV * foo( SV * in ) {
   /*  printf("# %s\n", SvPV_nolen(in)); */
   return newSVpv(SvPV_nolen(in), 0);
}

EOC

my $ok = 1;

print "1..1\n";

for(1 .. 1000) {
  my $n = int(rand(10000000));
  $ok = 0 if foo("$n") ne "$n";
}

if($ok) { print "ok 1\n" }
else {
  print "not ok 1\n";
}

__END__

[download]
I first run perl try.pl to compile the script, and then I run: 
$ perl -MTAP::Harness -e '$h = TAP::Harness->new(); $h->runtests("./tr
+y.pl");'
./try.pl .. ok
All tests successful.
Files=1, Tests=1,  0 wallclock secs ( 0.04 usr  0.01 sys +  0.06 cusr 
+ 0.01 csys =  0.12 CPU)
Result: PASS

[download]
As you can see, everything is fine. But if I then include the printf() statement and run perl try.pl (to recompile the script), upon re-testing I get: 
 $ perl -MTAP::Harness -e '$h = TAP::Harness->new(); $h->runtests("./t
+ry.pl");'
./try.pl .. All 1 subtests passed

Test Summary Report
-------------------
./try.pl (Wstat: 0 Tests: 1 Failed: 0)
  Parse errors: No plan found in TAP output
Files=1, Tests=1,  1 wallclock secs ( 0.11 usr  0.01 sys +  0.05 cusr 
+ 0.02 csys =  0.19 CPU)
Result: FAIL

[download]
Cheers,
Rob

In reply to Re^2: Test::Harness bug ? ... or author idiocy ? by syphilis
in thread Test::Harness bug ? ... or author idiocy ? by syphilis

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