[Bug 221113] readline function in perl does not correctly set $!

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Summary: readline function in perl does not correctly set $!


https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=221113





------- Additional Comments From wpilorz at gmail.com  2007-01-01 19:32 EST -------
Created an attachment (id=144617)
 --> (https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=144617&action=view)
how to test I/O errors and readline behaviour

I am showing a transcript of another test;
Run this from directory where readline_test.pl is  saved;

1. create a subdir and one test file with 400000 lines in that subdir; the file
size is about 6.76 MiB
2. create ISO9660 + rockridge image from that directory with mkisofs
3. create truncated image 5 MiB long
4. mount that truncated image through loop
5. run readline_test.pl for file in that mounted truncated image
  tests show that with PERLIO=stdio correct error message is displayed, while
  with PERLIO=perlio the error message is in most cases inappropriate.
  The error message (from die $!) is correct (Input/output error) if $/ is set
to a reference to a number X such that the size of part of file ftest01 stored
in truncated image file is a whole multiple of X

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