From 1c0af7f321e36291948c82c1fa48654aaf21288c Mon Sep 17 00:00:00 2001
From: Zohar Malamant <zom@equinor.com>
Date: Mon, 15 Nov 2021 10:19:00 +0100
Subject: [PATCH] Fix segmentation fault during util_abort

Fall back to printing things to stderr if `fopen` fails.
---
 lib/util/util_abort.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/util/util_abort.cpp b/lib/util/util_abort.cpp
index 44b8c9429..164896a41 100644
--- a/lib/util/util_abort.cpp
+++ b/lib/util/util_abort.cpp
@@ -90,7 +90,7 @@ extern "C" void util_abort__(const char *file, const char *function, int line,
         longjmp(test_jmp_buf, 0);
     }
 
-    FILE *abort_dump = stderr;
+    FILE *abort_dump = nullptr;
 #ifndef WIN32
     std::string abort_dump_path;
     if (!getenv("ERT_SHOW_BACKTRACE")) {
@@ -98,6 +98,8 @@ extern "C" void util_abort__(const char *file, const char *function, int line,
         abort_dump = fopen(abort_dump_path.c_str(), "w");
     }
 #endif
+    if (abort_dump == nullptr)
+        abort_dump = stderr;
 
     print(abort_dump,
           "\n\nAbort called from: {} ({}:{})\n\nError message: {}\n\n",