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//===-- Implementation of strcpy ------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "src/string/strcpy.h"
#include "src/string/memcpy.h"
#include "src/string/string_utils.h"
#include "src/__support/common.h"
#include "src/__support/sanitizer.h"
namespace __llvm_libc {
LLVM_LIBC_FUNCTION(char *, strcpy,
(char *__restrict dest, const char *__restrict src)) {
size_t size = internal::string_length(src) + 1;
char *result = reinterpret_cast<char *>(__llvm_libc::memcpy(dest, src, size));
// In many libc uses, we do not want memcpy to be instrumented. Hence,
// we mark the destination as initialized.
//
// We do not want memcpy to be instrumented because compilers can potentially
// generate calls to memcpy. If the sanitizer business logic ends up with a
// compiler generated call to memcpy which is instrumented, then it will
// break the sanitizers.
SANITIZER_MEMORY_INITIALIZED(result, size);
return result;
}
} // namespace __llvm_libc
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