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Add the return parameter storage class #2544

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Add the return parameter storage class #2544

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6 changes: 6 additions & 0 deletions spec/function.dd
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Original file line number Diff line number Diff line change
Expand Up @@ -1188,6 +1188,12 @@ int foo(in int x, out int y, ref int z, int q);
$(TROW $(D scope), references in the parameter
cannot be escaped (e.g. assigned to a global variable).
Ignored for parameters with no references)
$(TROW $(D return), Parameter may be returned or copied to the first parameter,
$(TROW $(D const), argument is implicitly converted to a const type)
but otherwise does not escape from the function.
Such copies are required not to outlive the argument(s) they were derived from.
Ignored for parameters with no references.
See $(DDSUBLINK memory-safe-d, scope-params, Scope Parameters).)
$(TROW $(D lazy), argument is evaluated by the called function and not by the caller)
$(TROW $(D const), argument is implicitly converted to a const type)
$(TROW $(D immutable), argument is implicitly converted to an immutable type)
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