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Tom Lane bcd541897f Defend against self-referential views in relation_is_updatable(). 
While a self-referential view doesn't actually work, it's possible
to create one, and it turns out that this breaks some of the
information_schema views.  Those views call relation_is_updatable(),
which neglected to consider the hazards of being recursive.  In
older PG versions you get a "stack depth limit exceeded" error,
but since v10 it'd recurse to the point of stack overrun and crash,
because commit a4c35ea1c took out the expression_returns_set() call
that was incidentally checking the stack depth.

Since this function is only used by information_schema views, it
seems like it'd be better to return "not updatable" than suffer
an error.  Hence, add tracking of what views we're examining,
in just the same way that the nearby fireRIRrules() code detects
self-referential views.  I added a check_stack_depth() call too,
just to be defensive.

Per private report from Manuel Rigger.  Back-patch to all
supported versions.
2019-11-21 16:21:44 -05:00
..
access Improve handling of NULLs in KNN-GiST and KNN-SP-GiST 2019-09-19 22:09:51 +03:00
bootstrap pgindent run for 9.5 2015-05-23 21:35:49 -04:00
catalog Require the schema qualification in pg_temp.type_name(arg). 2019-08-05 07:48:45 -07:00
commands Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
common Fix integer-overflow problems in interval comparison. 2017-04-05 23:51:28 -04:00
datatype Define integer limits independently from the system definitions. 2015-04-02 17:43:35 +02:00
executor Fix failure with initplans used conditionally during EvalPlanQual rechecks. 2018-09-15 13:42:34 -04:00
fe_utils Empty search_path in Autovacuum and non-psql/pgbench clients. 2018-02-26 07:39:48 -08:00
foreign Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
lib Revert "Permit dump/reload of not-too-large >1GB tuples" 2016-12-06 12:45:49 -03:00
libpq Fix detection of passwords hashed with MD5 2019-04-24 09:05:30 +09:00
mb Teach UtfToLocal/LocalToUtf to support algorithmic encoding conversions. 2015-05-14 22:27:12 -04:00
nodes Selectively include window frames in expression walks/mutates. 2019-10-03 11:18:15 +01:00
optimizer Fix incorrect handling of join clauses pushed into parameterized paths. 2018-04-19 15:49:12 -04:00
parser Require the schema qualification in pg_temp.type_name(arg). 2019-08-05 07:48:45 -07:00
port Replace xlc __fetch_and_add() with inline asm. 2019-09-13 19:34:19 -07:00
portability Use mmap MAP_NOSYNC option to limit shared memory writes 2015-03-21 22:06:19 -04:00
postmaster Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
regex Suppress compiler warnings about useless comparison of unsigned to zero. 2016-02-15 17:11:52 -05:00
replication Mark ReplicationSlotCtl as PGDLLIMPORT. 2019-06-13 10:53:17 -04:00
rewrite Defend against self-referential views in relation_is_updatable(). 2019-11-21 16:21:44 -05:00
snowball Update copyright for 2015 2015-01-06 11:43:47 -05:00
storage For PowerPC instruction "addi", use constraint "b". 2019-10-18 20:20:32 -07:00
tcop Fix event triggers for partitioned tables 2018-10-06 19:17:46 -03:00
tsearch Fix statically allocated struct with FLEXIBLE_ARRAY_MEMBER member. 2015-02-20 17:50:18 -05:00
utils Fix failure to zero-pad the result of bitshiftright(). 2019-09-22 17:46:00 -04:00
.gitignore Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
c.h Fix integer-overflow edge case detection in interval_mul and pgbench. 2019-11-07 11:23:04 -05:00
fmgr.h Revert addition of PGDLLEXPORT in PG_FUNCTION_INFO_V1 macro. 2016-10-12 18:02:03 -04:00
funcapi.h Add a utility function to extract variadic function arguments 2017-10-25 07:20:37 -04:00
getaddrinfo.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
getopt_long.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
Makefile Empty search_path in Autovacuum and non-psql/pgbench clients. 2018-02-26 07:39:48 -08:00
miscadmin.h Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
pg_config.h.in Avoid thread-safety problem in ecpglib. 2019-01-21 23:18:58 -05:00
pg_config.h.win32 Stamp 9.5.20. 2019-11-11 17:11:27 -05:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32 Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Further reduce the number of semaphores used under --disable-spinlocks. 2016-04-18 13:33:07 -04:00
pg_getopt.h Use our own getopt() on OpenBSD. 2019-01-18 15:06:26 -05:00
pg_trace.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
pgstat.h Rearrange pgstat_bestart() to avoid failures within its critical section. 2019-05-11 21:27:13 -04:00
pgtar.h Adopt the GNU convention for handling tar-archive members exceeding 8GB. 2015-11-21 20:21:32 -05:00
pgtime.h Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
port.h Fix misc typos in comments. 2019-01-23 13:46:51 +02:00
postgres.h Adjust DatumGetBool macro, this time for sure. 2016-04-28 11:51:08 -04:00
postgres_ext.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
postgres_fe.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
rusagestub.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
windowapi.h Update copyright for 2015 2015-01-06 11:43:47 -05:00