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// Copyright 2025 The Abseil Authors
//
// 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
//
// https://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 "absl/base/casts.h"
#include <cstdlib>
#include <string>
#include "absl/base/config.h"
#include "absl/base/internal/raw_logging.h"
#ifdef ABSL_INTERNAL_HAS_CXA_DEMANGLE
#include <cxxabi.h>
#endif
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace base_internal {
namespace {
std::string DemangleCppString(const char* mangled) {
std::string out;
int status = 0;
char* demangled = nullptr;
#ifdef ABSL_INTERNAL_HAS_CXA_DEMANGLE
demangled = abi::__cxa_demangle(mangled, nullptr, nullptr, &status);
#endif
if (status == 0 && demangled != nullptr) {
out.append(demangled);
free(demangled);
} else {
out.append(mangled);
}
return out;
}
} // namespace
void BadDownCastCrash(const char* source_type, const char* target_type) {
ABSL_RAW_LOG(FATAL, "down cast from %s to %s failed",
DemangleCppString(source_type).c_str(),
DemangleCppString(target_type).c_str());
}
} // namespace base_internal
ABSL_NAMESPACE_END
} // namespace absl
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