From d28c2a857e248e67f8cb32ac37feb56db9d71c9c Mon Sep 17 00:00:00 2001
From: David Eklov <deklov@fb.com>
Date: Wed, 7 Sep 2022 11:15:20 -0700
Subject: [PATCH] Ignore return value of function declared with
 'warn_unused_result' (#84369)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/84369

X-link: https://github.com/pytorch/multipy/pull/152

Ignore return value of function declared with 'warn_unused_result'

Addresses the following build failure that we get on some of our internal build environments:
caffe2/torch/csrc/deploy/environment.h:60:5: error: ignoring return value of function declared with 'warn_unused_result' attribute [-Werror,-Wunused-result] system(rmCmd.c_str());

Test Plan: Successful build

Reviewed By: jiyuanzFB, PaliC

Differential Revision: D39181069

fbshipit-source-id: e571b09c6da9ca3dcac2b5eaf9f8a3f8473adefd
---
 torch/csrc/deploy/environment.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/torch/csrc/deploy/environment.h b/torch/csrc/deploy/environment.h
index 433ce6bcb3f66..5837b59a1b3b8 100644
--- a/torch/csrc/deploy/environment.h
+++ b/torch/csrc/deploy/environment.h
@@ -57,7 +57,7 @@ class Environment {
   }
   virtual ~Environment() {
     auto rmCmd = fmt::format("rm -rf {}", extraPythonLibrariesDir_);
-    system(rmCmd.c_str());
+    (void)system(rmCmd.c_str());
   }
   virtual void configureInterpreter(Interpreter* interp) = 0;
   virtual const std::vector<std::string>& getExtraPythonPaths() {