windows: msvc: Define STDIN/OUT/ERR_FILENO.

anarazel · pull[bot] · commit acc87d8dc2ab · 2023-10-26T07:29:53.000Z
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 76e38b3. 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 76e38b3 came in
diff --git 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
