On Jul 11, 2025 at 10:53 +0800, Tom Lane <tgl@sss.pgh.pa.us>, wrote:
Zhang Mingli <zmlpostgres@gmail.com> writes:
Do we need to rollback error_context_stack to the previous state if we enter the branch for PG_CATCH()?
No. The PG_TRY mechanism itself deals with that: the next outer level of PG_TRY will restore error_context_stack to what it had been. If this were not so, most other places that add an error_context_stack entry would also be broken.