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Fix stack overflow of recursive get_name

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This commit is contained in:
lf0
2021-10-25 16:24:42 +08:00
committed by LINxiansheng
parent 7c7749fb13
commit d01e355c6a
1 changed files with 6 additions and 1 deletions
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7
src/sql/resolver/expr/ob_raw_expr.cpp
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@ -265,7 +265,12 @@ void ObRawExpr::reset()
int ObRawExpr::get_name(char* buf, const int64_t buf_len, int64_t& pos, ExplainType type) const
{
int ret = OB_SUCCESS;
if (OB_NOT_NULL(orig_expr_) && EXPLAIN_DBLINK_STMT == type) {
bool is_stack_overflow = false;
if (OB_FAIL(check_stack_overflow(is_stack_overflow))) {
LOG_WARN("fail to check stack overflow", K(ret), K(is_stack_overflow));
} else if (is_stack_overflow) {
LOG_DEBUG("too deep recursive", K(ret), K(is_stack_overflow));
} else if (OB_NOT_NULL(orig_expr_) && EXPLAIN_DBLINK_STMT == type) {
if (OB_FAIL(orig_expr_->get_name(buf, buf_len, pos, type))) {
LOG_WARN("fail to get name for orig expr", K(ret));
}