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authorTom Lane <tgl@sss.pgh.pa.us>2012-07-15 13:28:01 -0400
committerTom Lane <tgl@sss.pgh.pa.us>2012-07-15 13:28:01 -0400
commit1116c9d1e7a5c06636b172bb49bbe1e91edb6076 (patch)
tree653019dea22d5af705e094d256ae95e7142fe167 /src/backend/commands/tablecmds.c
parenteb972f3eca22858683a6b40466f6d561262b268b (diff)
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Prevent corner-case core dump in rfree().
rfree() failed to cope with the case that pg_regcomp() had initialized the regex_t struct but then failed to allocate any memory for re->re_guts (ie, the first malloc call in pg_regcomp() failed). It would try to touch the guts struct anyway, and thus dump core. This is a sufficiently narrow corner case that it's not surprising it's never been seen in the field; but still a bug is a bug, so patch all active branches. Noted while investigating whether we need to call pg_regfree after a failure return from pg_regcomp. Other than this bug, it turns out we don't, so adjust comments appropriately.
Diffstat (limited to 'src/backend/commands/tablecmds.c')
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