From 63e29becccafbfeca5fa6b08abe731f38505f5e4 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 13 Jun 2018 12:16:22 +0200
Subject: bin/prioritize-build-list: do not write to input if it is a pipe

---
 bin/prioritize-build-list | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'bin/prioritize-build-list')

diff --git a/bin/prioritize-build-list b/bin/prioritize-build-list
index 87450e3..f68a559 100755
--- a/bin/prioritize-build-list
+++ b/bin/prioritize-build-list
@@ -92,7 +92,8 @@ verbose_flock ${wait_for_lock} 8
   printf 'SELECT row_count();\n'
 } | \
   mysql_run_query | \
-  if [ -w "$1" ]; then
+  if [ -w "$1" ] && \
+    [ ! -p "$1" ]; then
     cat > "$1"
   else
     cat >&2
-- 
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