diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 03daf7f..2fcf40a 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -37,7 +37,9 @@ macro(configure_tests target)
     target_compile_definitions(${target} PRIVATE
         # Somewhat speed up Catch2 compile times
         CATCH_CONFIG_FAST_COMPILE
-        # Enable assertions for more thorough tests
+        # Fortify test suite for more thorough checks
+        _GLIBCXX_ASSERTIONS
+        _LIBCPP_ENABLE_ASSERTIONS=1
         GFX_TIMSORT_ENABLE_ASSERT
     )
 
@@ -85,6 +87,7 @@ endmacro()
 # Tests that can run with C++98
 add_executable(cxx_98_tests
     cxx_98_tests.cpp
+    verbose_abort.cpp
 )
 configure_tests(cxx_98_tests)
 target_compile_features(cxx_98_tests PRIVATE cxx_std_98)
@@ -93,6 +96,7 @@ target_compile_features(cxx_98_tests PRIVATE cxx_std_98)
 add_executable(cxx_11_tests
     merge_cxx_11_tests.cpp
     cxx_11_tests.cpp
+    verbose_abort.cpp
 )
 configure_tests(cxx_11_tests)
 target_compile_features(cxx_11_tests PRIVATE cxx_std_11)
@@ -100,6 +104,7 @@ target_compile_features(cxx_11_tests PRIVATE cxx_std_11)
 # Tests requiring C++17 support
 add_executable(cxx_17_tests
     cxx_17_tests.cpp
+    verbose_abort.cpp
 )
 configure_tests(cxx_17_tests)
 target_compile_features(cxx_17_tests PRIVATE cxx_std_17)
@@ -107,6 +112,7 @@ target_compile_features(cxx_17_tests PRIVATE cxx_std_17)
 # Tests requiring C++20 support
 add_executable(cxx_20_tests
     cxx_20_tests.cpp
+    verbose_abort.cpp
 )
 configure_tests(cxx_20_tests)
 target_compile_features(cxx_20_tests PRIVATE cxx_std_20)
diff --git a/tests/verbose_abort.cpp b/tests/verbose_abort.cpp
new file mode 100644
index 0000000..d78e049
--- /dev/null
+++ b/tests/verbose_abort.cpp
@@ -0,0 +1,22 @@
+#include <version>
+
+#ifdef _LIBCPP_VERSION
+
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+
+namespace std::__1
+{
+    [[noreturn]]
+    void __libcpp_verbose_abort(char const* format, ...) {
+        va_list list;
+        va_start(list, format);
+        std::vfprintf(stderr, format, list);
+        va_end(list);
+
+        std::abort();
+    }
+    }
+
+#endif
\ No newline at end of file