https://gcc.gnu.org/g:64d5e1eb97f198c9377c393d648c8db2617a80d0
commit r16-5987-g64d5e1eb97f198c9377c393d648c8db2617a80d0 Author: Luc Grosheintz <[email protected]> Date: Mon Dec 8 21:23:40 2025 +0100 libstdc++: Silence warning in mdspan. Splitting the tests for submdspan triggered a compiler warning. This commit changes the implementation of __dynamic_extents. In particular, how the span is created. Functionally, the two are equivalent. libstdc++-v3/ChangeLog: * include/std/mdspan (_ExtentsStorage::_M_dynamic_extents): Create span from pointer + size, not begin and end iterators. Reviewed-by: Tomasz Kamiński <[email protected]> Signed-off-by: Luc Grosheintz <[email protected]> Diff: --- libstdc++-v3/include/std/mdspan | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/mdspan b/libstdc++-v3/include/std/mdspan index 981fa1c601a1..f0f6630b4729 100644 --- a/libstdc++-v3/include/std/mdspan +++ b/libstdc++-v3/include/std/mdspan @@ -271,7 +271,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION requires (_Extents.size() > 0) { return {_M_dyn_exts + _S_dynamic_index(__begin), - _M_dyn_exts + _S_dynamic_index(__end)}; + _S_dynamic_index(__end) - _S_dynamic_index(__begin)}; } private:
