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commit    85bb81de530aed08888f4fc3dec85c5cfbd3befd
Author:   Robert Haas <rhaas@postgresql.org>
Date:     Fri Oct 24 12:17:00 2014 +0000
First released in: 9.5.0

    Fix off-by-one error in 2781b4bea7db357be59f9a5fd73ca1eb12ff5a79.
    
    Spotted by Tom Lane.


 src/backend/commands/trigger.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
index 1db066681bc..31a5411140d 100644
--- a/src/backend/commands/trigger.c
+++ b/src/backend/commands/trigger.c
@@ -4332,7 +4332,7 @@ AfterTriggerEnlargeQueryState(void)
 
 	if (afterTriggers.maxquerydepth == 0)
 	{
-		int			new_alloc = Max(afterTriggers.query_depth, 8);
+		int			new_alloc = Max(afterTriggers.query_depth + 1, 8);
 
 		afterTriggers.query_stack = (AfterTriggerEventList *)
 			MemoryContextAlloc(TopTransactionContext,
@@ -4346,7 +4346,8 @@ AfterTriggerEnlargeQueryState(void)
 	{
 		/* repalloc will keep the stack in the same context */
 		int			old_alloc = afterTriggers.maxquerydepth;
-		int			new_alloc = Max(afterTriggers.query_depth, old_alloc * 2);
+		int			new_alloc = Max(afterTriggers.query_depth + 1,
+									old_alloc * 2);
 
 		afterTriggers.query_stack = (AfterTriggerEventList *)
 			repalloc(afterTriggers.query_stack,


[parent: 3c2aa0c6f27f]