From bcd3feaf5207d22345ddedbac8cecdb732bf16c9 Mon Sep 17 00:00:00 2001
From: gVisor bot <gvisor-bot@google.com>
Date: Wed, 14 Dec 2022 17:01:05 -0800
Subject: [PATCH] Add test for zero size read and write

PiperOrigin-RevId: 495456453
---
 test/syscalls/linux/pipe.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/syscalls/linux/pipe.cc b/test/syscalls/linux/pipe.cc
index 209801e36..b02e47048 100644
--- a/test/syscalls/linux/pipe.cc
+++ b/test/syscalls/linux/pipe.cc
@@ -664,6 +664,13 @@ TEST_P(PipeTest, Streaming) {
   }
 }
 
+TEST_P(PipeTest, ZeroSize) {
+  SKIP_IF(!CreateBlocking());
+
+  ASSERT_THAT(write(wfd_.get(), nullptr, 0), SyscallSucceedsWithValue(0));
+  ASSERT_THAT(read(rfd_.get(), nullptr, 0), SyscallSucceedsWithValue(0));
+}
+
 std::string PipeCreatorName(::testing::TestParamInfo<PipeCreator> info) {
   return info.param.name_;  // Use the name specified.
 }