From a28343a33ed28b4d5c83c37e350aceaf09b5246f Mon Sep 17 00:00:00 2001 From: Sam Clegg Date: Thu, 5 Dec 2019 13:09:21 -0600 Subject: Add string parameter to WASM_UNREACHABLE (#2499) This works more like llvm's unreachable handler in that is preserves information even in release builds. --- src/support/utilities.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/support/utilities.cpp (limited to 'src/support/utilities.cpp') diff --git a/src/support/utilities.cpp b/src/support/utilities.cpp new file mode 100644 index 000000000..ea426df9c --- /dev/null +++ b/src/support/utilities.cpp @@ -0,0 +1,45 @@ +/* + * Copyright 2019 WebAssembly Community Group participants + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "utilities.h" + +#include +#include +#include + +#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) +#include "sanitizer/common_interface_defs.h" +#endif + +void wasm::handle_unreachable(const char* msg, + const char* file, + unsigned line) { +#ifndef NDEBUG + if (msg) { + std::cerr << msg << "\n"; + } + std::cerr << "UNREACHABLE executed"; + if (file) { + std::cerr << " at " << file << ":" << line; + } + std::cerr << "!\n"; +#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) + __sanitizer_print_stack_trace(); + __builtin_trap(); +#endif +#endif + abort(); +} -- cgit v1.2.3