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[libc++][test] Fix more MSVC warnings #74256
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ldionne
merged 3 commits into
llvm:main
from
StephanTLavavej:stl-17-more-simple-warnings
Dec 6, 2023
Merged
[libc++][test] Fix more MSVC warnings #74256
ldionne
merged 3 commits into
llvm:main
from
StephanTLavavej:stl-17-more-simple-warnings
Dec 6, 2023
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…erator::operator ->' is recursive if applied using infix notation".
…4' to 'unsigned int', possible loss of data". An allocator's deallocate() should be able to take its size type.
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libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.
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Dec 3, 2023
@llvm/pr-subscribers-libcxx Author: Stephan T. Lavavej (StephanTLavavej) ChangesFound while running libc++'s test suite with MSVC's STL.
Full diff: https://github.com/llvm/llvm-project/pull/74256.diff 4 Files Affected:
diff --git a/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap_noexcept.pass.cpp b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap_noexcept.pass.cpp
index cdb09df7c7a9a..0a0128e44658f 100644
--- a/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap_noexcept.pass.cpp
+++ b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap_noexcept.pass.cpp
@@ -27,7 +27,7 @@ struct test_alloc {
using value_type = T;
[[nodiscard]] constexpr T* allocate(std::size_t) { return nullptr; }
- void deallocate(void*, unsigned) {}
+ void deallocate(void*, std::size_t) {}
};
template <class T>
diff --git a/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap_noexcept.pass.cpp b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap_noexcept.pass.cpp
index fdefc5ebe9af0..4f41e3a4d716a 100644
--- a/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap_noexcept.pass.cpp
+++ b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap_noexcept.pass.cpp
@@ -26,7 +26,7 @@ struct test_alloc {
using value_type = T;
[[nodiscard]] constexpr T* allocate(std::size_t) { return nullptr; }
- void deallocate(void*, unsigned) {}
+ void deallocate(void*, std::size_t) {}
};
template <class T>
diff --git a/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp b/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp
index f139226b875f0..0c02cfdb76ad3 100644
--- a/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp
+++ b/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp
@@ -59,7 +59,7 @@ struct WithNonCopyableIterator : std::ranges::view_base {
iterator(iterator&&);
iterator& operator=(iterator&&);
XYPoint& operator*() const;
- iterator operator->() const;
+ XYPoint* operator->() const;
iterator& operator++();
iterator operator++(int);
diff --git a/libcxx/test/std/ranges/range.factories/range.repeat.view/size.pass.cpp b/libcxx/test/std/ranges/range.factories/range.repeat.view/size.pass.cpp
index 72531b059aa24..6f24b3b9bf75a 100644
--- a/libcxx/test/std/ranges/range.factories/range.repeat.view/size.pass.cpp
+++ b/libcxx/test/std/ranges/range.factories/range.repeat.view/size.pass.cpp
@@ -31,8 +31,9 @@ constexpr bool test() {
}
{
- std::ranges::repeat_view<int, int> rv(10, std::numeric_limits<int>::max());
- assert(rv.size() == std::numeric_limits<int>::max());
+ constexpr int int_max = std::numeric_limits<int>::max();
+ std::ranges::repeat_view<int, int> rv(10, int_max);
+ assert(rv.size() == int_max);
}
return true;
|
ldionne
approved these changes
Dec 6, 2023
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Found while running libc++'s test suite with MSVC's STL.
WithNonCopyableIterator::iterator::operator ->
' is recursive if applied using infix notation".XYPoint*
, likeWithArrowOperator
immediately above, fixes the warning.==
': signed/unsigned mismatch".repeat_view
'ssize()
being compared with theint
return value of a function, and a negative value would undergo a value-modifying conversion, so it warns. This happens because MSVC is exceptionally lazy aboutconstexpr
function calls, so it's callingstd::numeric_limits<int>::max()
at runtime and doesn't realize that it's a positive constant. By extracting this into aconstexpr
variable, MSVC is satisfied thatint_max
will undergo a value-preserving conversion. This costs an extra line but slightly reduces the repetition ofstd::numeric_limits<int>::max()
so I hope it's acceptable.unsigned __int64
' to 'unsigned int
', possible loss of data".deallocate()
should be able to take its size type. In these tests, MSVC is instantiating enough of the allocator machinery to emit this warning. These test allocators weren't intentionally trying to makedeallocate()
have a weird parameter type - these tests are interested in POCS etc. and theallocate()
/deallocate()
are just stubs.