| From: | Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: libpq: Remove redundant null pointer checks before free() |
| Date: | 2022-06-17 19:07:58 |
| Message-ID: | 5eb1b215-acc2-9922-50d8-fc57a3e4f5e8@enterprisedb.com |
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| Lists: | pgsql-hackers |
On 17.06.22 07:11, Tom Lane wrote:
> Having said that, the pattern "if (x) free(x);" is absolutely
> ubiquitous across our code, and so I'm not sure that I'm on
> board with undoing it only in libpq. I'd be happier if we made
> a push to get rid of it everywhere.
Sure, here is a more comprehensive patch set. (It still looks like
libpq is the largest chunk.)
> Notably, I think the choice
> that pfree(NULL) is disallowed traces directly to worries about
> coding-pattern-compatibility with pre-POSIX free(). Should we
> revisit that?
Yes please, and also repalloc().
| Attachment | Content-Type | Size |
|---|---|---|
| v2-0001-Remove-redundant-null-pointer-checks-before-free.patch | text/plain | 45.9 KB |
| v2-0002-Remove-redundant-null-pointer-checks-before-pg_fr.patch | text/plain | 4.8 KB |
| v2-0003-Remove-redundant-null-pointer-checks-before-PQcle.patch | text/plain | 9.4 KB |
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