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Modify raw parsetree representation returned by gram.y for SubLinks:

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the oper field should be a valid Node structure so it can be dumped by
outfuncs.c without risk of coredump.  (We had been using a raw pointer
to character string, which surely is NOT a valid Node.)  This doesn't
cause any backwards compatibility problems for stored rules, since
raw unanalyzed parsetrees are never stored.
This commit is contained in:
Tom Lane
2000-05-25 22:42:19 +00:00
parent 610abfd57b
commit ff566b2241
3 changed files with 19 additions and 17 deletions
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6
src/include/nodes/primnodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: primnodes.h,v 1.41 2000/04/12 17:16:40 momjian Exp $
* $Id: primnodes.h,v 1.42 2000/05/25 22:42:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -350,8 +350,8 @@ typedef struct Aggref
* NOTE: lefthand and oper have varying meanings depending on where you look
* in the parse/plan pipeline:
* 1. gram.y delivers a list of the (untransformed) lefthand expressions in
* lefthand, and sets oper to a one-element list containing the string
* name of the operator.
* lefthand, and sets oper to a single A_Expr (not a list!) containing
* the string name of the operator, but no arguments.
* 2. The parser's expression transformation transforms lefthand normally,
* and replaces oper with a list of Oper nodes, one per lefthand
* expression. These nodes represent the parser's resolution of exactly