From 6b46166ef2612d2a58767447b3db8f0343afb552 Mon Sep 17 00:00:00 2001
From: Jordan Rupprecht <rupprecht@google.com>
Date: Thu, 11 Apr 2024 02:14:07 +0000
Subject: [PATCH] [llvm][NFC] Suppress `-Wunused-result` call to `write`

Commit 87e6f87fe7e343eb656e9b49d30cbb065c086651 adds a call to `::write()`, which may be annotated w/ `warn_unused_result`, leading to `-Wunused-result` failures.
---
 llvm/lib/Support/raw_socket_stream.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Support/raw_socket_stream.cpp b/llvm/lib/Support/raw_socket_stream.cpp
index 1dcf6352f2cc..14e2308df4d7 100644
--- a/llvm/lib/Support/raw_socket_stream.cpp
+++ b/llvm/lib/Support/raw_socket_stream.cpp
@@ -265,7 +265,10 @@ void ListeningSocket::shutdown() {
 
   // Ensure ::poll returns if shutdown is called by a seperate thread
   char Byte = 'A';
-  ::write(PipeFD[1], &Byte, 1);
+  ssize_t written = ::write(PipeFD[1], &Byte, 1);
+
+  // Ignore any write() error
+  (void)written;
 }
 
 ListeningSocket::~ListeningSocket() {