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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2015-07-20 14:18:08 +0200 |
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| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2015-07-20 14:18:08 +0200 |
| commit | 14ade020ffa805b8335af10a11520b7b2249c99e (patch) | |
| tree | d85ea5abfe78cd90ffd77f5809b90f194220c9de /src/backend/regex/regcomp.c | |
| parent | 76fa354c533c1955cc5fdcbff4a82edac274174c (diff) | |
| download | postgresql-14ade020ffa805b8335af10a11520b7b2249c99e.tar.gz postgresql-14ade020ffa805b8335af10a11520b7b2249c99e.zip | |
Fix (some of) pltcl memory usage
As reported by Bill Parker, PL/Tcl did not validate some malloc() calls
against NULL return. Fix by using palloc() in a new long-lived memory
context instead. This allows us to simplify error handling too, by
simply deleting the memory context instead of doing retail frees.
There's still a lot that could be done to improve PL/Tcl's memory
handling ...
This is pretty ancient, so backpatch all the way back.
Author: Michael Paquier and Álvaro Herrera
Discussion: https://www.postgresql.org/message-id/CAFrbyQwyLDYXfBOhPfoBGqnvuZO_Y90YgqFM11T2jvnxjLFmqw@mail.gmail.com
Diffstat (limited to 'src/backend/regex/regcomp.c')
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