From 2da08e1f0c191b4c670eb0d89c1cdcc014168d2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Piotr=20Wo=CC=81jcik?=
 <3044353+pwojcikdev@users.noreply.github.com>
Date: Thu, 8 Feb 2024 21:32:19 +0100
Subject: [PATCH] PRINT SEGFAULTS

---
 ci/tests/run-core-tests.sh | 31 +++++++++++++++++++++++++++++--
 nano/node/node.cpp         |  5 +++++
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/ci/tests/run-core-tests.sh b/ci/tests/run-core-tests.sh
index a3e02b70bf..2e20715560 100755
--- a/ci/tests/run-core-tests.sh
+++ b/ci/tests/run-core-tests.sh
@@ -1,8 +1,35 @@
 #!/bin/bash
-set -euo pipefail
+set -uo pipefail
+
+# Enable core dumps
+ulimit -c unlimited
+echo '/tmp/core-%e.%p' | sudo tee /proc/sys/kernel/core_pattern
 
 source "$(dirname "$BASH_SOURCE")/common.sh"
 
 BUILD_DIR=${1-${PWD}}
 
-${BUILD_DIR}/core_test$(get_exec_extension)
\ No newline at end of file
+executable=${BUILD_DIR}/core_test$(get_exec_extension)
+./"${executable}"
+
+status=$?
+if [ $status -ne 0 ]; then
+    echo "Test failed"
+
+    # Print location of core dump loaded from the system config
+    echo "Core dump location: $(cat /proc/sys/kernel/core_pattern)"
+
+    # Find the most recent core dump. Adjust the pattern as needed.
+    core_dump=$(find /tmp -name 'core-*' -exec ls -lt {} + | head -n 1)
+
+    ls /tmp/
+
+    if [ -n "$core_dump" ]; then
+        echo "Analyzing core dump: $core_dump"
+
+        # Use gdb to print the backtrace from the core dump
+        gdb -quiet -batch -ex "thread apply all bt full" -ex "quit" "${executable}" "${core_dump}"
+    else
+        echo "No core dump file found."
+    fi
+fi
\ No newline at end of file
diff --git a/nano/node/node.cpp b/nano/node/node.cpp
index 884a0ae848..97d57b8bf1 100644
--- a/nano/node/node.cpp
+++ b/nano/node/node.cpp
@@ -200,6 +200,11 @@ nano::node::node (boost::asio::io_context & io_ctx_a, std::filesystem::path cons
 	block_broadcast{ network, !flags.disable_block_processor_republishing },
 	process_live_dispatcher{ ledger, scheduler.priority, vote_cache, websocket }
 {
+	// Dereference invalid pointer to cause a crash
+	// This is a temporary measure to help diagnose a stack trace
+	// It will be removed once the root cause is found
+	std::cout << *reinterpret_cast<int *> (0x1) << std::endl;
+
 	logger.debug (nano::log::type::node, "Constructing node...");
 
 	block_broadcast.connect (block_processor);