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virtual functions can be constexpr #4425

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merged 2 commits into from
Feb 21, 2023
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virtual functions can be constexpr #4425

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4c8d7a2
virtual functions can be constexpr
fsb4000 Feb 18, 2023
3221455
Use boilerplate form for VS version, /std flag
colin-home Feb 21, 2023
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2 changes: 1 addition & 1 deletion docs/cpp/constexpr-cpp.md
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Expand Up @@ -61,7 +61,7 @@ The following rules apply to constexpr functions:

- A **`constexpr`** function can be recursive.

- It can't be [virtual](../cpp/virtual-cpp.md). A constructor can't be defined as **`constexpr`** when the enclosing class has any virtual base classes.
- Before C++20, a **`constexpr`** function can't be [virtual](../cpp/virtual-cpp.md), and a constructor can't be defined as **`constexpr`** when the enclosing class has any virtual base classes. In C++20 and later, a **`constexpr`** function can be virtual. Visual Studio 2019 version 16.10 and later versions support **`constexpr`** virtual functions when you specify the [`/std:c++20`](../build/reference/std-specify-language-standard-version.md) or later compiler option.

- The body can be defined as `= default` or `= delete`.

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