diff options
| author | Tony Cook <tony@develop-help.com> | 2020-08-27 12:21:47 +1000 |
|---|---|---|
| committer | Karl Williamson <khw@cpan.org> | 2020-08-27 14:51:04 -0600 |
| commit | 8a65a5dce836b59980666a348d4740b2565f6121 (patch) | |
| tree | 75c49e5f149e7a3eb9399b84549ebc80142d4b54 /pod/perlvar.pod | |
| parent | e275abc06263fc695a06f3deb147e050a3bd1411 (diff) | |
| download | perl-8a65a5dce836b59980666a348d4740b2565f6121.tar.gz | |
not only system and library calls can set errno
Unfortunately I don't remember the ticket, but I remember one
complaining that code like C<print $fh "..."> would set $!
when $fh wasn't an open filehandle, so cover that case here too.
Diffstat (limited to 'pod/perlvar.pod')
| -rw-r--r-- | pod/perlvar.pod | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pod/perlvar.pod b/pod/perlvar.pod index 4812f0d9c6..0fd9e9aea8 100644 --- a/pod/perlvar.pod +++ b/pod/perlvar.pod @@ -1927,6 +1927,9 @@ It can be used immediately before invoking the C<die()> operator, to set the exit value, or to inspect the system error string corresponding to error I<n>, or to restore C<$!> to a meaningful state. +Perl itself may set C<errno> to a non-zero on failure even if no +system call is performed. + Mnemonic: What just went bang? =item %OS_ERROR |