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Diffstat (limited to 'lib/msan/msan_new_delete.cc')
-rw-r--r-- | lib/msan/msan_new_delete.cc | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/msan/msan_new_delete.cc b/lib/msan/msan_new_delete.cc new file mode 100644 index 000000000..c4efe2ef7 --- /dev/null +++ b/lib/msan/msan_new_delete.cc @@ -0,0 +1,51 @@ +//===-- msan_new_delete.cc ------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file is a part of MemorySanitizer. +// +// Interceptors for operators new and delete. +//===----------------------------------------------------------------------===// + +#include "msan.h" + +#include <stddef.h> + +namespace __msan { +// This function is a no-op. We need it to make sure that object file +// with our replacements will actually be loaded from static MSan +// run-time library at link-time. +void ReplaceOperatorsNewAndDelete() { } +} + +using namespace __msan; // NOLINT + +// Fake std::nothrow_t to avoid including <new>. +namespace std { + struct nothrow_t {}; +} // namespace std + + +#define OPERATOR_NEW_BODY \ + GET_MALLOC_STACK_TRACE; \ + return MsanReallocate(&stack, 0, size, sizeof(u64), false) + +void *operator new(size_t size) { OPERATOR_NEW_BODY; } +void *operator new[](size_t size) { OPERATOR_NEW_BODY; } +void *operator new(size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } +void *operator new[](size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } + +#define OPERATOR_DELETE_BODY \ + if (ptr) MsanDeallocate(ptr) + +void operator delete(void *ptr) { OPERATOR_DELETE_BODY; } +void operator delete[](void *ptr) { OPERATOR_DELETE_BODY; } +void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; } +void operator delete[](void *ptr, std::nothrow_t const&) { + OPERATOR_DELETE_BODY; +} |