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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2007-03-26 15:50:11 -0400 |
|---|---|---|
| committer | H.Merijn Brand <h.m.brand@xs4all.nl> | 2007-03-27 06:17:25 +0000 |
| commit | ad7244db27635ed088fc05a8a69e99bbb19c36d6 (patch) | |
| tree | a1b5453552fe78cc237f814fff2fdbc5a1403ce1 /pod/perlhack.pod | |
| parent | c8fb9d349396af98577278122fee7357e4ce610e (diff) | |
| download | perl-ad7244db27635ed088fc05a8a69e99bbb19c36d6.tar.gz | |
util.c [PATCH] perlhack.pod (Was: Re: threads crashes in Tru64)
Message-ID: <46085C33.1030601@iki.fi>
p4raw-id: //depot/perl@30771
Diffstat (limited to 'pod/perlhack.pod')
| -rw-r--r-- | pod/perlhack.pod | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/pod/perlhack.pod b/pod/perlhack.pod index 05e8751369..b176b83721 100644 --- a/pod/perlhack.pod +++ b/pod/perlhack.pod @@ -2844,6 +2844,22 @@ But in any case, try to keep the features and operating systems separate. =back +=head2 Problematic System Interfaces + +=over 4 + +=item * + +malloc(0), realloc(0), calloc(0, 0) are nonportable. To be portable +allocate at least one byte. (In general you should rarely need to +work at this low level, but instead use the various malloc wrappers.) + +=item * + +snprintf() - the return type is unportable. Use my_snprintf() instead. + +=back + =head2 Security problems Last but not least, here are various tips for safer coding. |