llvm-project/compiler-rt/lib/ubsan/ubsan_init_standalone_preinit.cpp
Fangrui Song bb8230bb2b
[sanitizer] Internalize .preinit_array variables
We can use an internal linkage variable to make it clear the variable is
not exported. The special section .preinit_array is a GC root.

Pull Request: https://github.com/llvm/llvm-project/pull/98584
2024-07-12 11:15:46 -07:00

36 lines
1.0 KiB
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//===-- ubsan_init_standalone_preinit.cpp --------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Initialization of standalone UBSan runtime.
//
//===----------------------------------------------------------------------===//
#include "ubsan_platform.h"
#if !CAN_SANITIZE_UB
#error "UBSan is not supported on this platform!"
#endif
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "ubsan_init.h"
#include "ubsan_signals_standalone.h"
#if SANITIZER_CAN_USE_PREINIT_ARRAY
namespace __ubsan {
static void PreInitAsStandalone() {
InitAsStandalone();
InitializeDeadlySignals();
}
} // namespace __ubsan
__attribute__((section(".preinit_array"), used)) static auto preinit =
__ubsan::PreInitAsStandalone;
#endif // SANITIZER_CAN_USE_PREINIT_ARRAY