tmp/tmp0u6jlepw/{from.md → to.md}
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### [[lex]]: lexical conventions <a id="diff.cpp23.lex">[[diff.cpp23.lex]]</a>
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**Change:** New operator `^^`. **Rationale:** Required for new features.
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**Effect on original feature:** Valid C++23 code that contains two
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consecutive `^` tokens can be ill-formed in this revision of C++.
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[*Example 1*:
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``` cpp
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struct C { int operator^(int); };
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int operator^(int (C::*p)(int), C);
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int i = &C::operator^^C{}; // ill-formed; previously well-formed
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```
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— *end example*]
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**Change:** New keywords. **Rationale:** Required for new features.
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- The `contract_assert` keyword is added to introduce a contract
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assertion through an *assertion-statement* [[stmt.contract.assert]].
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**Effect on original feature:** Valid C++23 code using `contract_assert`
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as an identifier is not valid in this revision of C++.
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