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Improved version of patch to protect pg_get_expr() against misuse:

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look through join alias Vars to avoid breaking join queries, and
move the test to someplace where it will catch more possible ways
of calling a function.  We still ought to throw away the whole thing
in favor of a data-type-based solution, but that's not feasible in
the back branches.

This needs to be back-patched further than 9.0, but I don't have time
to do so today.  Committing now so that the fix gets into 9.0beta4.
This commit is contained in:
Tom Lane
2010-07-29 23:16:41 +00:00
parent a0194371a8
commit c902ad9ca9
4 changed files with 133 additions and 100 deletions
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4
src/include/parser/parse_func.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/parser/parse_func.h,v 1.68 2010/01/02 16:58:07 momjian Exp $
* $PostgreSQL: pgsql/src/include/parser/parse_func.h,v 1.68.6.1 2010/07/29 23:16:41 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -82,4 +82,6 @@ extern Oid LookupFuncNameTypeNames(List *funcname, List *argtypes,
extern Oid LookupAggNameTypeNames(List *aggname, List *argtypes,
bool noError);
extern void check_pg_get_expr_args(ParseState *pstate, Oid fnoid, List *args);
#endif /* PARSE_FUNC_H */