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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2009-01-30 16:59:16 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2009-01-30 16:59:16 +0000 |
| commit | e06e3d38103274388a05ee3bcbea584ff9cacb22 (patch) | |
| tree | 8ea74517cf872497533a594b402e2d804808b651 /src/backend | |
| parent | fbb70ccd6072604f76423e1c8be9e842231a1d50 (diff) | |
| download | postgresql-e06e3d38103274388a05ee3bcbea584ff9cacb22.tar.gz postgresql-e06e3d38103274388a05ee3bcbea584ff9cacb22.zip | |
Defend against null input in analyze_requires_snapshot(), per report
from Rushabh Lathia.
Back-patch of patch of 2009-01-08. This is necessary in 8.3, as reported
by Bjorn Munch. It's not currently necessary in 8.2, AFAICS, but seems
best to include it there too.
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/parser/analyze.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c index 226f7c76339..65de8610179 100644 --- a/src/backend/parser/analyze.c +++ b/src/backend/parser/analyze.c @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.353.2.2 2008/12/13 02:00:52 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.353.2.3 2009/01/30 16:59:16 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -437,13 +437,17 @@ transformStmt(ParseState *pstate, Node *parseTree, * Returns true if a snapshot must be set before doing parse analysis * on the given raw parse tree. * - * Classification here should match transformStmt(). + * Classification here should match transformStmt(); but we also have to + * allow a NULL input (for Parse/Bind of an empty query string). */ bool analyze_requires_snapshot(Node *parseTree) { bool result; + if (parseTree == NULL) + return false; + switch (nodeTag(parseTree)) { /* |