From c26863cc1e4ed5b394b20366187bf137c8d7de52 Mon Sep 17 00:00:00 2001
From: Ian McInerney <ian.s.mcinerney@ieee.org>
Date: Tue, 18 Jul 2023 21:02:11 +0100
Subject: [PATCH] Don't try to enable sequential mode on non-existant files on
 GTK

Fixes https://gitlab.com/kicad/code/kicad/-/issues/15222
---
 libs/kiplatform/gtk/io.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libs/kiplatform/gtk/io.cpp b/libs/kiplatform/gtk/io.cpp
index 47cc4a5ab0..51443c67d6 100644
--- a/libs/kiplatform/gtk/io.cpp
+++ b/libs/kiplatform/gtk/io.cpp
@@ -30,7 +30,8 @@ FILE* KIPLATFORM::IO::SeqFOpen( const wxString& aPath, const wxString& aMode )
 {
     FILE* fp = wxFopen( aPath, aMode );
 
-    posix_fadvise( fileno( fp ), 0, 0, POSIX_FADV_SEQUENTIAL );
+    if( fp )
+        posix_fadvise( fileno( fp ), 0, 0, POSIX_FADV_SEQUENTIAL );
 
     return fp;
 }