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-rw-r--r--lib/asan/asan_preinit.cpp24
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diff --git a/lib/asan/asan_preinit.cpp b/lib/asan/asan_preinit.cpp
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+//===-- asan_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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of AddressSanitizer, an address sanity checker.
+//
+// Call __asan_init at the very early stage of process startup.
+//===----------------------------------------------------------------------===//
+#include "asan_internal.h"
+
+using namespace __asan;
+
+#if SANITIZER_CAN_USE_PREINIT_ARRAY
+ // The symbol is called __local_asan_preinit, because it's not intended to be
+ // exported.
+ // This code linked into the main executable when -fsanitize=address is in
+ // the link flags. It can only use exported interface functions.
+ __attribute__((section(".preinit_array"), used))
+ void (*__local_asan_preinit)(void) = __asan_init;
+#endif