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[Version 10.0] Feature support for record with sealed ToString #1550

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[Version 10.0] Feature support for record with sealed ToString #1550

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f181e3b
support record with sealed ToString
RexJaeschke Jan 24, 2026
9ffa65f
Clean up blank lines in classes.md
BillWagner Feb 10, 2026
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7 changes: 3 additions & 4 deletions standard/classes.md
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Expand Up @@ -6282,7 +6282,9 @@ The record class shall include a synthesized method equivalent to a method decla
public override string ToString();
```

The method may be declared explicitly. It is an error if the explicit declaration does not match the expected signature or accessibility, or if the explicit declaration doesn't allow overriding it in a derived type and the record class type is not sealed. It is an error if either synthesized, or explicitly declared, method doesn't override `object.ToString()` (for example, due to shadowing in intermediate base types).
The method may be declared explicitly. It is an error if the explicit declaration does not match the expected signature or accessibility. It is an error if either synthesized, or explicitly declared, method doesn't override `object.ToString()` (for example, due to shadowing in intermediate base types).
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@jnm2 jnm2 Jan 26, 2026

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The removed statement is a consequence of the requirement that the member overrides object.ToString().

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The method may be declared explicitly. It is an error if the explicit declaration does not match the expected signature or accessibility. It is an error if either synthesized, or explicitly declared, method doesn't override `object.ToString()` (for example, due to shadowing in intermediate base types).
The method may be declared explicitly. It is an error if either synthesized, or explicitly declared, method doesn't override `object.ToString()` (for example, due to shadowing in intermediate base types).


Sealing an explicitly declared `ToString` method prevents the compiler from synthesizing a `ToString` method for any derived record types. However, this does not prevent the compiler from synthesizing `PrintMembers`.
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@jnm2 jnm2 Jan 26, 2026

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Should this be a note?


The synthesized method:

Expand Down Expand Up @@ -6520,6 +6522,3 @@ A positional record class ([§15.2.1](classes.md#1521-general)) with at least on
> ```
>
> *end example*



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