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commit    aeebacff114634ffa07b5299ee6c41b219717bc3
Author:   Robert Haas <rhaas@postgresql.org>
Date:     Wed Jul 30 15:25:58 2014 +0000
First released in: 9.5.0, 9.3.6, 9.4.0

    Fix mishandling of background worker PGPROCs in EXEC_BACKEND builds.
    
    InitProcess() relies on IsBackgroundWorker to decide whether the PGPROC
    for a new backend should be taken from ProcGlobal's freeProcs or from
    bgworkerFreeProcs.  In EXEC_BACKEND builds, InitProcess() is called
    sooner than in non-EXEC_BACKEND builds, and IsBackgroundWorker wasn't
    getting initialized soon enough.
    
    Report by Noah Misch.  Diagnosis and fix by me.


 src/backend/postmaster/postmaster.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 9548caa0aeb..39fa5641914 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -4672,6 +4672,9 @@ SubPostmasterMain(int argc, char *argv[])
 	{
 		int			shmem_slot;
 
+		/* do this as early as possible; in particular, before InitProcess() */
+		IsBackgroundWorker = true;
+
 		/* Close the postmaster's sockets */
 		ClosePostmasterPorts(false);
 


[parent: 98c5fe5d0df8]