http://qs321.pair.com?node_id=11114305


in reply to Re^7: NYTProf line report failure
in thread NYTProf line report failure

I had the same question about which one were your warns. If you want to create a simple and correct output with your warning additions then just start with a simple and correct Perl script and test with it your new hypotheses. Questions without any source code are a bit rhetorical.

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Re^9: NYTProf line report failure
by Anonymous Monk on Mar 15, 2020 at 18:11 UTC
    Here's an SSCCE that triggers the issue when profiled by NYTProf: 
    #!/usr/bin/perl

use strict;
use warnings;
use ExtUtils::Installed;

ExtUtils::Installed->new;

    [download]
    Output from nytprofhtml with the added warn: 
     100% ... WARN:(eval 570)[(eval 569)[/ExtUtils/MM_Unix.pm:2920]:1] at 
+/Devel/NYTProf/FileInfo.pm line 432.
WARN:(eval 570)[(eval 569)[/ExtUtils/MM_Unix.pm:2920]:1] at /Devel/NYT
+Prof/FileInfo.pm line 432.
WARN: at /Devel/NYTProf/FileInfo.pm line 432.
Use of uninitialized value in numeric gt (>) at /Devel/NYTProf/Reader.
+pm line 184.
Use of uninitialized value in numeric gt (>) at /Devel/NYTProf/Reader.
+pm line 185.
Use of uninitialized value $fname in substitution (s///) at /Devel/NYT
+Prof/Util.pm line 235.
Use of uninitialized value $fname in substitution (s///) at /Devel/NYT
+Prof/Util.pm line 237.
Use of uninitialized value $fname in substitution (s///) at /Devel/NYT
+Prof/Util.pm line 238.
Use of uninitialized value in concatenation (.) or string at /Devel/NY
+TProf/Reader.pm line 188.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 540.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 541.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 542.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 543.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 544.
Use of uninitialized value $_ in substitution (s///) at /bin/nytprofht
+ml line 545.
Use of uninitialized value in sprintf at /bin/nytprofhtml line 202.

Extracting subroutine call data ...
Extracting subroutine links
Generating subroutine stack flame graph ...

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      Thanks for persisting and getting it down to an SSCCE.

      However, as with bliako in 11114313, I cannot reproduce it on my system.

      I am running Strawberry perl 5.28.0, and Devel::NYTProf 6.06.

      What systems and versions are you running again? Is it under Apache?

[reply]
        Looks like a version-specific bug: 
        macOS 10.13.4 darwin 17.5.0

Failure:

Perl 5.26.2
ExtUtils::Installed 2.04
Devel::NYTProf 6.06

Success:

Perl 5.28.0
ExtUtils::Installed 2.14
Devel::NYTProf 6.06
        I wonder what changed...
[reply]

      for perl v5.28.2, NYTProf v6.06, ExtUtils/Installed.pm v2.14, I can report that your code copied verbatim runs perfectly. Nothing wrong as far as those warmings you reported are concerned. (on a linux system).

      bw, bliako

[reply]
      Of course nytprofhtml fails for the SSCCE without the patch from bliako: 
      100% ... WARN:(eval 570)[(eval 569)[/ExtUtils/MM_Unix.pm:2920]:1] at /
+Devel/NYTProf/FileInfo.pm line 432.
WARN:(eval 570)[(eval 569)[/ExtUtils/MM_Unix.pm:2920]:1] at /Devel/NYT
+Prof/FileInfo.pm line 432.
WARN: at /Devel/NYTProf/FileInfo.pm line 432.
Can't call method "inc" on an undefined value at /Devel/NYTProf/FileIn
+fo.pm line 433.

      [download]
      No report generated...
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