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125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
//===-- ubsan_handlers.h ----------------------------------------*- C++ -*-===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Entry points to the runtime library for Clang's undefined behavior sanitizer.
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//
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//===----------------------------------------------------------------------===//
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#ifndef UBSAN_HANDLERS_H
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#define UBSAN_HANDLERS_H
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#include "ubsan_value.h"
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namespace __ubsan {
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struct TypeMismatchData {
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SourceLocation Loc;
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const TypeDescriptor &Type;
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uptr Alignment;
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unsigned char TypeCheckKind;
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};
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#define RECOVERABLE(checkname, ...) \
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extern "C" SANITIZER_INTERFACE_ATTRIBUTE \
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void __ubsan_handle_ ## checkname( __VA_ARGS__ ); \
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extern "C" SANITIZER_INTERFACE_ATTRIBUTE \
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void __ubsan_handle_ ## checkname ## _abort( __VA_ARGS__ );
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/// \brief Handle a runtime type check failure, caused by either a misaligned
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/// pointer, a null pointer, or a pointer to insufficient storage for the
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/// type.
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RECOVERABLE(type_mismatch, TypeMismatchData *Data, ValueHandle Pointer)
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struct OverflowData {
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SourceLocation Loc;
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const TypeDescriptor &Type;
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};
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/// \brief Handle an integer addition overflow.
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RECOVERABLE(add_overflow, OverflowData *Data, ValueHandle LHS, ValueHandle RHS)
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/// \brief Handle an integer subtraction overflow.
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RECOVERABLE(sub_overflow, OverflowData *Data, ValueHandle LHS, ValueHandle RHS)
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/// \brief Handle an integer multiplication overflow.
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RECOVERABLE(mul_overflow, OverflowData *Data, ValueHandle LHS, ValueHandle RHS)
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/// \brief Handle a signed integer overflow for a unary negate operator.
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RECOVERABLE(negate_overflow, OverflowData *Data, ValueHandle OldVal)
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/// \brief Handle an INT_MIN/-1 overflow or division by zero.
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RECOVERABLE(divrem_overflow, OverflowData *Data,
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ValueHandle LHS, ValueHandle RHS)
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struct ShiftOutOfBoundsData {
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SourceLocation Loc;
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const TypeDescriptor &LHSType;
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const TypeDescriptor &RHSType;
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};
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/// \brief Handle a shift where the RHS is out of bounds or a left shift where
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/// the LHS is negative or overflows.
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RECOVERABLE(shift_out_of_bounds, ShiftOutOfBoundsData *Data,
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ValueHandle LHS, ValueHandle RHS)
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struct OutOfBoundsData {
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SourceLocation Loc;
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const TypeDescriptor &ArrayType;
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const TypeDescriptor &IndexType;
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};
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/// \brief Handle an array index out of bounds error.
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RECOVERABLE(out_of_bounds, OutOfBoundsData *Data, ValueHandle Index)
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struct UnreachableData {
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SourceLocation Loc;
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};
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/// \brief Handle a __builtin_unreachable which is reached.
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extern "C" SANITIZER_INTERFACE_ATTRIBUTE
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void __ubsan_handle_builtin_unreachable(UnreachableData *Data);
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/// \brief Handle reaching the end of a value-returning function.
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extern "C" SANITIZER_INTERFACE_ATTRIBUTE
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void __ubsan_handle_missing_return(UnreachableData *Data);
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struct VLABoundData {
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SourceLocation Loc;
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const TypeDescriptor &Type;
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};
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/// \brief Handle a VLA with a non-positive bound.
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RECOVERABLE(vla_bound_not_positive, VLABoundData *Data, ValueHandle Bound)
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struct FloatCastOverflowData {
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// FIXME: SourceLocation Loc;
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const TypeDescriptor &FromType;
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const TypeDescriptor &ToType;
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};
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/// \brief Handle overflow in a conversion to or from a floating-point type.
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RECOVERABLE(float_cast_overflow, FloatCastOverflowData *Data, ValueHandle From)
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struct InvalidValueData {
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SourceLocation Loc;
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const TypeDescriptor &Type;
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};
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/// \brief Handle a load of an invalid value for the type.
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RECOVERABLE(load_invalid_value, InvalidValueData *Data, ValueHandle Val)
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struct FunctionTypeMismatchData {
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SourceLocation Loc;
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const TypeDescriptor &Type;
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};
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RECOVERABLE(function_type_mismatch,
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FunctionTypeMismatchData *Data,
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ValueHandle Val)
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}
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#endif // UBSAN_HANDLERS_H
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