[libcxx-commits] [PATCH] D157065: [libc++] Fix std::layout_left::stride(r)
Christian Trott via Phabricator via libcxx-commits
libcxx-commits at lists.llvm.org
Fri Aug 4 08:41:03 PDT 2023
This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG0f4d7d81c9d0: [libc++][mdspan] Fix layout_left::stride(r) (authored by crtrott).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D157065/new/
https://reviews.llvm.org/D157065
Files:
libcxx/include/__mdspan/layout_left.h
libcxx/test/std/containers/views/mdspan/layout_left/stride.pass.cpp
Index: libcxx/test/std/containers/views/mdspan/layout_left/stride.pass.cpp
===================================================================
--- libcxx/test/std/containers/views/mdspan/layout_left/stride.pass.cpp
+++ libcxx/test/std/containers/views/mdspan/layout_left/stride.pass.cpp
@@ -39,8 +39,8 @@
constexpr size_t D = std::dynamic_extent;
test_stride<std::extents<unsigned, D>>(std::array<unsigned, 1>{1}, 7);
test_stride<std::extents<unsigned, 7>>(std::array<unsigned, 1>{1});
- test_stride<std::extents<unsigned, 7, 8>>(std::array<unsigned, 2>{8, 1});
- test_stride<std::extents<int64_t, D, 8, D, D>>(std::array<int64_t, 4>{720, 90, 10, 1}, 7, 9, 10);
+ test_stride<std::extents<unsigned, 7, 8>>(std::array<unsigned, 2>{1, 7});
+ test_stride<std::extents<int64_t, D, 8, D, D>>(std::array<int64_t, 4>{1, 7, 56, 504}, 7, 9, 10);
return true;
}
Index: libcxx/include/__mdspan/layout_left.h
===================================================================
--- libcxx/include/__mdspan/layout_left.h
+++ libcxx/include/__mdspan/layout_left.h
@@ -164,7 +164,7 @@
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
__r < extents_type::rank(), "layout_left::mapping::stride(): invalid rank index");
index_type __s = 1;
- for (rank_type __i = extents_type::rank() - 1; __i > __r; __i--)
+ for (rank_type __i = 0; __i < __r; __i++)
__s *= __extents_.extent(__i);
return __s;
}
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