From df879c99ee77225dae7d75a7b7783224941a1e99 Mon Sep 17 00:00:00 2001
From: "Arnold D. Robbins" <arnold@skeeve.com>
Date: Mon, 22 Jan 2018 21:38:54 +0200
Subject: Fix inplace tests on BSD systems.

---
 main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'main.c')

diff --git a/main.c b/main.c
index 55983789..79782a81 100644
--- a/main.c
+++ b/main.c
@@ -246,6 +246,14 @@ main(int argc, char **argv)
 	if ((cp = getenv("GAWK_LOCALE_DIR")) != NULL)
 		locale_dir = cp;
 
+#if defined(F_GETFL) && defined(O_APPEND)
+	int flags = fcntl(fileno(stderr), F_GETFL, NULL);
+	if (flags >= 0 && (flags & O_APPEND) == 0) {
+		flags |= O_APPEND;
+		(void) fcntl(fileno(stderr), F_SETFL, flags);
+	}
+#endif
+
 #if defined(LOCALEDEBUG)
 	initial_locale = locale;
 #endif
-- 
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