diff options
Diffstat (limited to 'src/backend/utils/adt/tsquery_cleanup.c')
| -rw-r--r-- | src/backend/utils/adt/tsquery_cleanup.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/backend/utils/adt/tsquery_cleanup.c b/src/backend/utils/adt/tsquery_cleanup.c index 1a90964ce79..8c2df73ea6b 100644 --- a/src/backend/utils/adt/tsquery_cleanup.c +++ b/src/backend/utils/adt/tsquery_cleanup.c @@ -406,6 +406,8 @@ normalize_phrase_tree(NODE *node) if (node->valnode->qoperator.oper == OP_NOT) { + NODE *orignode = node; + /* eliminate NOT sequence */ while (node->valnode->type == QI_OPR && node->valnode->qoperator.oper == node->right->valnode->qoperator.oper) @@ -413,7 +415,11 @@ normalize_phrase_tree(NODE *node) node = node->right->right; } - node->right = normalize_phrase_tree(node->right); + if (orignode != node) + /* current node isn't checked yet */ + node = normalize_phrase_tree(node); + else + node->right = normalize_phrase_tree(node->right); } else if (node->valnode->qoperator.oper == OP_PHRASE) { |