pgsql: Check for interrupts and stack overflow in TParserGet().

Started by Tom Lanealmost 3 years ago1 messagescomitters

tgl@sss.pgh.pa.us

almost 3 years ago

Check for interrupts and stack overflow in TParserGet().

TParserGet() recurses for some token types, meaning it's possible
to drive it to stack overflow. Since this is a minority behavior,
I chose to add the check_stack_depth() call to the two places that
recurse rather than doing it during every single call.

While at it, add CHECK_FOR_INTERRUPTS(), because this can run
unpleasantly long for long inputs.

Per bug #17995 from Zuming Jiang. This is old, so back-patch
to all supported branches.

Discussion: /messages/by-id/17995-9f20ff3e6389db4c@postgresql.org

Branch
------
REL_15_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/a77d901714416f6bd4343c367585b060f385bbbc

Modified Files
--------------
src/backend/tsearch/wparser_def.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)