[libc++][hardening] Use __builtin_verbose_trap if it's available.

Keep falling back to `__builtin_trap` on older versions of Clang.
llvm · Jul 9, 2024 · ea44fac · ea44fac
1 parent a1d73ac
commit ea44fac
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/libcxx/vendor/llvm/default_assertion_handler.in b/libcxx/vendor/llvm/default_assertion_handler.in
@@ -23,8 +23,11 @@
 
 #else
 
-// TODO(hardening): use `__builtin_verbose_trap(message)` once that becomes available.
-#  define _LIBCPP_ASSERTION_HANDLER(message) ((void)message, __builtin_trap())
+#  if __has_builtin(__builtin_verbose_trap)
+#    define _LIBCPP_ASSERTION_HANDLER(message) (__builtin_verbose_trap(message))
+#  else
+#    define _LIBCPP_ASSERTION_HANDLER(message) ((void)message, __builtin_trap())
+#  endif
 
 #endif // _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_DEBUG