From 6ef5924725812f5885880cf57821fe2cd49b808d Mon Sep 17 00:00:00 2001
From: Nicolas Lacasse <nlacasse@google.com>
Date: Mon, 1 Jun 2020 14:54:09 -0700
Subject: Deflake pty_test_linux.

PiperOrigin-RevId: 314208973
---
 test/syscalls/linux/pty.cc | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test/syscalls/linux')

diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc
index b8a0159ba..aabfa6955 100644
--- a/test/syscalls/linux/pty.cc
+++ b/test/syscalls/linux/pty.cc
@@ -364,6 +364,12 @@ PosixErrorOr<size_t> PollAndReadFd(int fd, void* buf, size_t count,
     ssize_t n =
         ReadFd(fd, static_cast<char*>(buf) + completed, count - completed);
     if (n < 0) {
+      if (errno == EAGAIN) {
+        // Linux sometimes returns EAGAIN from this read, despite the fact that
+        // poll returned success. Let's just do what do as we are told and try
+        // again.
+        continue;
+      }
       return PosixError(errno, "read failed");
     }
     completed += n;
-- 
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