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commit    b783a38d4580d807210e26c2c09eb77b66d7286f
Author:   Michael Paquier <michael@paquier.xyz>
Date:     Tue Aug 27 00:11:38 2019 +0000
First released in: 9.5.20, 9.6.16, 10.11, 11.6, 12.0

    Fix failure of --jobs with vacuumdb on Windows
    
    FD_SETSIZE needs to be declared before winsock2.h, or it is possible to
    run into buffer overflow issues when using --jobs.  This is similar to
    pgbench's solution done in a23c641.
    
    This has been introduced by 71d84ef, and older versions have been using
    the default value of FD_SETSIZE, defined at 64.
    
    Per buildfarm member jacana, but this impacts all Windows animals
    running the TAP tests.  I have reproduced the failure locally to check
    the patch.
    
    Author: Michael Paquier
    Reviewed-by: Andrew Dunstan
    Discussion: https://postgr.es/m/20190826054000.GE7005@paquier.xyz
    Backpatch-through: 9.5


 src/bin/scripts/vacuumdb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/bin/scripts/vacuumdb.c b/src/bin/scripts/vacuumdb.c
index 0c434c68711..2814c034d4e 100644
--- a/src/bin/scripts/vacuumdb.c
+++ b/src/bin/scripts/vacuumdb.c
@@ -10,6 +10,10 @@
  *-------------------------------------------------------------------------
  */
 
+#ifdef WIN32
+#define FD_SETSIZE 1024			/* must set before winsock2.h is included */
+#endif
+
 #include "postgres_fe.h"
 
 #ifdef HAVE_SYS_SELECT_H


[parent: 6bdd9fb003e2]