From 2aa11a523519bb181e43ccb3351f99b937ca9824 Mon Sep 17 00:00:00 2001
From: Paul Wise <pabs3@bonedaddy.net>
Date: Sun, 31 Jul 2022 15:18:09 +0800
Subject: [PATCH] Print file open error information

Should help diagnose the build failures in Debian.

Fixes: https://github.com/microsoft/SPTAG/issues/327
---
 AnnService/inc/Helper/AsyncFileReader.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AnnService/inc/Helper/AsyncFileReader.h b/AnnService/inc/Helper/AsyncFileReader.h
index b4be27727..d8cc593bb 100644
--- a/AnnService/inc/Helper/AsyncFileReader.h
+++ b/AnnService/inc/Helper/AsyncFileReader.h
@@ -518,7 +518,7 @@ namespace SPTAG
             {
                 m_fileHandle = open(filePath, O_RDONLY | O_DIRECT);
                 if (m_fileHandle <= 0) {
-                    LOG(LogLevel::LL_Error, "Failed to create file handle: %s\n", filePath);
+                    LOG(LogLevel::LL_Error, "Failed to create file handle: %s: %s\n", filePath, strerror(errno));
                     return false;
                 }