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Revoke support for strxfrm() that write past the specified array length.

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This formalizes a decision implicit in commit
4ea51cdfe8 and adds clean detection of
affected systems.  Vendor updates are available for each such known bug.
Back-patch to 9.5, where the aforementioned commit first appeared.
This commit is contained in:
Noah Misch
2015-07-08 20:44:21 -04:00
parent b28244abe5
commit be8b06c364
5 changed files with 70 additions and 10 deletions
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src/backend/utils/init/postinit.c
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@ -391,6 +391,8 @@ CheckMyDatabase(const char *name, bool am_superuser)
SetConfigOption("lc_collate", collate, PGC_INTERNAL, PGC_S_OVERRIDE);
SetConfigOption("lc_ctype", ctype, PGC_INTERNAL, PGC_S_OVERRIDE);
check_strxfrm_bug();
ReleaseSysCache(tup);
}