Allow a context to be passed in for error handling
As pointed out by Tom Lane, we can allow other users of the error
handler callbacks to provide their own memory context by adding
the context to use to ErrorData and using that instead of explicitly
using ErrorContext.
This then allows GetErrorContextStack() to be called from inside
exception handlers, so modify plpgsql to take advantage of that and
add an associated regression test for it.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/ddef1a39c6798ffae899acd08ff92329dd304085
Modified Files
--------------
src/backend/utils/error/elog.c | 126 ++++++++++++++++-----------------
src/include/utils/elog.h | 3 +
src/pl/plpgsql/src/pl_gram.y | 4 +-
src/test/regress/expected/plpgsql.out | 98 +++++++++++++++++++++++++
src/test/regress/sql/plpgsql.sql | 56 +++++++++++++++
5 files changed, 221 insertions(+), 66 deletions(-)
