Add test for handleFatalErrorCondition within JUnit reporter

tests/ExtraTests/CMakeLists.txt

@@ -467,6 +467,17 @@ set_tests_properties(
     PASS_REGULAR_EXPRESSION "Errors occurred during startup!"
 )
 
+add_executable(ReportingCrashWithJunitReporter ${TESTS_DIR}/X36-ReportingCrashWithJunitReporter.cpp)
+target_link_libraries(ReportingCrashWithJunitReporter PRIVATE Catch2::Catch2WithMain)
+add_test(
+  NAME Reporters::CrashInJunitReporter
+  COMMAND ${CMAKE_COMMAND} -E env $<TARGET_FILE:ReportingCrashWithJunitReporter> --reporter JUnit
+)
+set_tests_properties(
+    Reporters::CrashInJunitReporter
+  PROPERTIES
+    PASS_REGULAR_EXPRESSION "</testsuites>"
+)
 
 add_executable(AssertionStartingEventGoesBeforeAssertionIsEvaluated
   X20-AssertionStartingEventGoesBeforeAssertionIsEvaluated.cpp

tests/ExtraTests/X36-ReportingCrashWithJunitReporter.cpp

@@ -0,0 +1,32 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+
+/**\file
+ * Checks that signals/SEH within open section does not hard crash JUnit
+ * (or similar reporter) while we are trying to report fatal error.
+ */
+
+#include <catch2/catch_test_macros.hpp>
+
+#include <csignal>
+
+// On Windows we need to send SEH and not signal to test the
+// RunContext::handleFatalErrorCondition code path
+#if defined( _MSC_VER )
+#    include <windows.h>
+#endif
+
+TEST_CASE( "raises signal" ) {
+    SECTION( "section" ) {
+#if defined( _MSC_VER )
+        RaiseException( 0xC0000005, 0, 0, NULL );
+#else
+        std::raise( SIGILL );
+#endif
+    }
+}