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[2026-03 LWG Motion 9] P4140R0 Proposed resolution for US70-126: allow incomplete types in type order #8895

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[2026-03 LWG Motion 9] P4140R0 Proposed resolution for US70-126: allow incomplete types in type order #8895

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4 changes: 4 additions & 0 deletions source/support.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -5699,6 +5699,10 @@
If an explicit specialization or partial specialization of \tcode{type_order} is declared,
the program is ill-formed.

\pnum
The templates \tcode{type_order} and \tcode{type_order_v}
may be instantiated with incomplete types as arguments.

\pnum
\recommended
The order should be lexicographical on parameter-type-lists and template argument lists.
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