From 05371c25775132b71d27d6314a3de9951bf1b68b Mon Sep 17 00:00:00 2001
From: Brian Cabral <bkc@fb.com>
Date: Mon, 9 Mar 2020 08:17:39 -0700
Subject: [PATCH] Made GlViewer work on linux

Summary: Fixes a bug in the async read that made the linux version crash.  There's probably a latent bug somewhere else.

Reviewed By: aparrapo

Differential Revision: D20319700

fbshipit-source-id: 52564b29c8f85ef23b586c03295c630bcc71af13
---
 source/mesh_stream/AsyncFile.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/mesh_stream/AsyncFile.h b/source/mesh_stream/AsyncFile.h
index 348971c..9ab081a 100644
--- a/source/mesh_stream/AsyncFile.h
+++ b/source/mesh_stream/AsyncFile.h
@@ -165,7 +165,8 @@ struct AsyncFile {
 
   void readBegin(PendingRead& pending, const std::vector<Segment>& segments, uint64_t offset)
       const {
-#ifdef __APPLE__ // apple doesn't support preadv
+#if defined(__APPLE__) || defined(__linux__)
+    // apple doesn't support preadv and linux crashes
     pending = std::async(&AsyncFile::readSegments, this, segments, offset);
 #else // __APPLE__
     pending = std::async(preadv, handle, segments.data(), segments.size(), offset);