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| author | Perl 5 Porters <perl5-porters@africa.nicoh.com> | 1996-08-28 02:32:42 +0000 |
|---|---|---|
| committer | Andy Dougherty <doughera@lafcol.lafayette.edu> | 1996-08-28 02:32:42 +0000 |
| commit | b7a902f4f873ea955859f89894f7d3c3b721fc0d (patch) | |
| tree | d91db21d10ddf00f5b133d93c4ef514fcebfc75f | |
| parent | c411622ed1115558a052ffa629b6bd710abfef5c (diff) | |
| download | perl-b7a902f4f873ea955859f89894f7d3c3b721fc0d.tar.gz | |
lval substr() coredumps with refs (with patch)
substr() coredumps with a target that is a ref, when it is used in
an lvalue context.
The patch below corrects the problem by stringifying the reference
first (and emitting a warning when appropriate).
| -rw-r--r-- | pod/perldiag.pod | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pod/perldiag.pod b/pod/perldiag.pod index 1b03800702..2698b3f46d 100644 --- a/pod/perldiag.pod +++ b/pod/perldiag.pod @@ -231,6 +231,12 @@ could indicate that SvREFCNT_dec() was called too many times, or that SvREFCNT_inc() was called too few times, or that the SV was mortalized when it shouldn't have been, or that memory has been corrupted. +=item Attempt to use reference as lvalue in substr + +(W) You supplied a reference as the first argument to substr() used +as an lvalue, which is pretty strange. Perhaps you forgot to +dereference it first. See L<perlfunc/substr>. + =item Bad arg length for %s, is %d, should be %d (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or |