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commit    92f478657c5544eba560047c39eba8a030ddb83e
Author:   Andres Freund <andres@anarazel.de>
Date:     Tue Jul 19 00:06:34 2022 +0000
First released in: 16.0, 15.0

    windows: msvc: Define STDIN/OUT/ERR_FILENO.
    
    Because they are not available we've used _fileno(stdin) in some places, but
    that doesn't reliably work, because stdin might be closed. This is the
    prerequisite of the subsequent commit, fixing a failure introduced in
    76e38b37a5.
    
    Author: Andres Freund <andres@anarazel.de>
    Reported-By: Sandeep Thakkar <sandeep.thakkar@enterprisedb.com>
    Message-Id: 20220520164558.ozb7lm6unakqzezi@alap3.anarazel.de (on pgsql-packagers)
    Backpatch: 15-, where 76e38b37a5 came in


 src/include/port/win32_msvc/unistd.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/include/port/win32_msvc/unistd.h b/src/include/port/win32_msvc/unistd.h
index b63f4770a1c..b7795ba03c4 100644
--- a/src/include/port/win32_msvc/unistd.h
+++ b/src/include/port/win32_msvc/unistd.h
@@ -1 +1,9 @@
 /* src/include/port/win32_msvc/unistd.h */
+
+/*
+ * MSVC does not define these, nor does _fileno(stdin) etc reliably work
+ * (returns -1 if stdin/out/err are closed).
+ */
+#define STDIN_FILENO	0
+#define STDOUT_FILENO	1
+#define STDERR_FILENO	2


[parent: 1ab071983637]