Fix an arcane bug on clang 19

ManifoldFR · jcarpent · commit 365a0ef60ebe · 2025-02-12T12:12:24.000+01:00
diff --git a/include/proxsuite/linalg/veg/tuple.hpp b/include/proxsuite/linalg/veg/tuple.hpp
@@ -754,7 +754,7 @@ struct cat
     proxsuite::linalg::veg::meta::false_type /*unused*/,
     Tuples&&... tups) VEG_NOEXCEPT -> Concat<Tuples...>
   {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) || (defined(__clang__) && __clang_major__ >= 19)
     return cat::from_ref_to_result(
       Tag<proxsuite::linalg::veg::meta::type_sequence_cat<Tuple, Tuples...>>{},
       cat::apply(_detail::_tuple::tuple_fwd(VEG_FWD(tups))...));

Original file line number	Diff line number	Diff line change
`@@ -754,7 +754,7 @@ struct cat`
`754`	`754`	`proxsuite::linalg::veg::meta::false_type /unused/,`
`755`	`755`	`Tuples&&... tups) VEG_NOEXCEPT -> Concat<Tuples...>`
`756`	`756`	`{`
`757`		`-#ifdef _MSC_VER`
	`757`	`+#if defined(_MSC_VER) \|\| (defined(__clang__) && __clang_major__ >= 19)`
`758`	`758`	`return cat::from_ref_to_result(`
`759`	`759`	`Tag<proxsuite::linalg::veg::meta::type_sequence_cat<Tuple, Tuples...>>{},`
`760`	`760`	`cat::apply(_detail::_tuple::tuple_fwd(VEG_FWD(tups))...));`