From c7f8bc55826bd0700e44be1886212aa3aefe7da2 Mon Sep 17 00:00:00 2001
From: GPUCode <geoster3d@gmail.com>
Date: Fri, 24 Mar 2023 16:50:48 +0200
Subject: [PATCH] file_util: Check fd before using dup

---
 src/common/file_util.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index 27ecef10d..5155b19a4 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -1187,6 +1187,8 @@ void OpenFStream<std::ios_base::in>(
     boost_iostreams<boost::iostreams::file_descriptor_source>& fstream,
     const std::string& filename) {
     IOFile file(filename, "r");
+    if (file.GetFd() == -1)
+        return;
     int fd = dup(file.GetFd());
     if (fd == -1)
         return;
@@ -1199,6 +1201,8 @@ template <>
 void OpenFStream<std::ios_base::out>(
     boost_iostreams<boost::iostreams::file_descriptor_sink>& fstream, const std::string& filename) {
     IOFile file(filename, "w");
+    if (file.GetFd() == -1)
+        return;
     int fd = dup(file.GetFd());
     if (fd == -1)
         return;