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Jon Meow
56dc4ae375
Note that ptr.h also includes an enable_if change, to help avoid https://bugs.llvm.org/show_bug.cgi?id=51881
24 lines
776 B
C++
24 lines
776 B
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef EXECUTABLE_SEMANTICS_COMMON_PTR_H_
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#define EXECUTABLE_SEMANTICS_COMMON_PTR_H_
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#include <type_traits>
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namespace Carbon {
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// A non-nullable pointer. Written as `Nonnull<T*>` instead of `T*`.
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//
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// Note LLVM primarily enforces the attribute on function calls that can be
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// proven to be called with nullptr; in other places, this is essentially a
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// comment.
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template <typename T,
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typename std::enable_if_t<std::is_pointer_v<T>>* = nullptr>
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using Nonnull = T _Nonnull __attribute__((nonnull));
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} // namespace Carbon
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#endif // EXECUTABLE_SEMANTICS_COMMON_PTR_H_
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