Clarify LHS as discard behavior#1639
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Fixes dotnet#1631 "zero or more variable_references" → "two or more targets" (grammar requires 2+ elements; targets can be variable_references or discards) Adds: compound_assignment LHS shall not be a discard Adds: simple_assignment and ref_assignment LHS may be a discard Adds: RHS is evaluated even when target is a discard, but no value is stored
BillWagner
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jskeet
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Apr 16, 2026
Nigel-Ecma
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Apr 26, 2026
Restore the simplified summary paragraph, except for deconstructing assignment requiring 2 or more targets. Add second paragraph describing discard behavior. Add normative sentence that the left operand of a compound assignment can't be a discard.
jskeet
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Fixes #1631
"zero or more variable_references" → "two or more targets" (grammar requires 2+ elements; targets can be variable_references or discards)
Adds: compound_assignment LHS shall not be a discard
Adds: simple_assignment and ref_assignment LHS may be a discard
Adds: RHS is evaluated even when target is a discard, but no value is stored