[REG2.064] Issue 15778 - polysemous string type doesn't work in array operation #5511
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| * to change code unit size for polysemous string literal. | ||
| */ | ||
| if (e2x.op == TOKstring) | ||
| e2x = e2x.implicitCastTo(sc, e1.type.constOf()); |
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It looks weird to cast(const)"abc" the string literal when element-wise assignment of immutable to mutable scalar types should already work.
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For element-wise assignment, the each char elements in rhs needs to be converted to wchar, but the string literal typed immutable(char)[] is not implicitly convertible to wchar[] because implicitCastTo function cannot know that it can ignore the top-level conversion.
By the the target type change to e1.type.constOf() == const(wchar[]), the polysemous string literal will get a chance to modify its code unit size without immutability violation.
Other any D literals don't have immutable element type by default, so I think this is only for striing literals.
[REG2.064] Issue 15778 - polysemous string type doesn't work in array operation
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Thanks. |
[REG2.064] Issue 15778 - polysemous string type doesn't work in array operation
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