microsoft · Stephan T. Lavavej (StephanTLavavej) · Feb 2, 2026 · Feb 2, 2026 · Feb 2, 2026 · Feb 2, 2026
diff --git a/benchmarks/google-benchmark b/benchmarks/google-benchmark
diff --git a/benchmarks/src/adjacent_difference.cpp b/benchmarks/src/adjacent_difference.cpp
@@ -40,7 +40,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(2255);
 }
 

diff --git a/benchmarks/src/adjacent_find.cpp b/benchmarks/src/adjacent_find.cpp
@@ -41,7 +41,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->ArgPair(2525, 1142);
 }
 

diff --git a/benchmarks/src/find_and_count.cpp b/benchmarks/src/find_and_count.cpp
@@ -66,15 +66,15 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Args({8021, 3056});
     // AVX tail tests
     bm->Args({63, 62})->Args({31, 30})->Args({15, 14})->Args({7, 6});
 }
 
 struct point {
-    int16_t x;
-    int16_t y;
+    int16_t x{};
+    int16_t y{};
 
     bool operator==(const point&) const = default;
 };

diff --git a/benchmarks/src/find_first_of.cpp b/benchmarks/src/find_first_of.cpp
@@ -81,7 +81,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Args({2, 3})->Args({6, 81})->Args({7, 4})->Args({9, 3})->Args({22, 5})->Args({58, 2});
     bm->Args({75, 85})->Args({102, 4})->Args({200, 46})->Args({325, 1})->Args({400, 50});
     bm->Args({1011, 11})->Args({1280, 46})->Args({1502, 23})->Args({2203, 54})->Args({3056, 7});

diff --git a/benchmarks/src/includes.cpp b/benchmarks/src/includes.cpp
@@ -96,7 +96,7 @@ void bm_includes(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     for (const auto& spread :
         {needle_spread::dense, needle_spread::dense_random, needle_spread::sparse, needle_spread::sparse_random}) {
         for (const auto& expected_match : {true, false}) {

diff --git a/benchmarks/src/iota.cpp b/benchmarks/src/iota.cpp
@@ -31,7 +31,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(7)->Arg(18)->Arg(43)->Arg(131)->Arg(315)->Arg(1212);
 }
 

diff --git a/benchmarks/src/is_sorted_until.cpp b/benchmarks/src/is_sorted_until.cpp
@@ -43,7 +43,7 @@ void bm_is_sorted_until(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->ArgPair(3000, 1800);
 }
 

diff --git a/benchmarks/src/minmax_element.cpp b/benchmarks/src/minmax_element.cpp
@@ -57,7 +57,7 @@ void bm(benchmark::State& state) {
 }
 
 template <size_t ElementSize>
-void common_arg(auto bm) {
+void common_arg(benchmark::Benchmark* bm) {
     bm->Arg(8021);
     // AVX tail tests
     bm->Arg(63 / ElementSize);

diff --git a/benchmarks/src/mismatch.cpp b/benchmarks/src/mismatch.cpp
@@ -48,7 +48,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Args({8, 3})->Args({24, 22})->Args({105, -1})->Args({4021, 3056});
 }
 

diff --git a/benchmarks/src/priority_queue_push_range.cpp b/benchmarks/src/priority_queue_push_range.cpp
@@ -56,7 +56,7 @@ void BM_push_range(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->RangeMultiplier(100)->Range(1, vec_size)->Arg(vec_size / 2 + 1);
 }
 

diff --git a/benchmarks/src/regex_match.cpp b/benchmarks/src/regex_match.cpp
@@ -39,7 +39,7 @@ void bm_match_sequence_of_9a1b(benchmark::State& state, const char* pattern, syn
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(100)->Arg(200)->Arg(400);
 }
 

diff --git a/benchmarks/src/regex_search.cpp b/benchmarks/src/regex_search.cpp
@@ -32,7 +32,7 @@ void bm_lorem_search(benchmark::State& state, const char* pattern, syntax_option
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(2)->Arg(3)->Arg(4);
 }
 

diff --git a/benchmarks/src/reverse.cpp b/benchmarks/src/reverse.cpp
@@ -33,7 +33,7 @@ void rc(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(3449);
     // AVX tail tests
     bm->Arg(63)->Arg(31)->Arg(15)->Arg(7);

diff --git a/benchmarks/src/rotate.cpp b/benchmarks/src/rotate.cpp
@@ -31,7 +31,7 @@ void bm_rotate(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Args({3333, 2242})->Args({3332, 1666})->Args({3333, 1111})->Args({3333, 501});
     bm->Args({3333, 3300})->Args({3333, 12})->Args({3333, 5})->Args({3333, 1});
     bm->Args({333, 101})->Args({123, 32})->Args({23, 7})->Args({12, 5})->Args({3, 2});

diff --git a/benchmarks/src/sample.cpp b/benchmarks/src/sample.cpp
@@ -36,7 +36,7 @@ void bm_sample(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Args({1 << 20, 1 << 15});
 }
 

diff --git a/benchmarks/src/search.cpp b/benchmarks/src/search.cpp
@@ -184,7 +184,7 @@ void member_rfind(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->DenseRange(0, std::size(patterns) - 1, 1);
 }
 

diff --git a/benchmarks/src/search_n.cpp b/benchmarks/src/search_n.cpp
@@ -61,7 +61,7 @@ void bm(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     for (const auto& n : {40, 18, 16, 14, 10, 8, 5, 4, 3, 2, 1}) {
         bm->ArgPair(3000, n);
     }

diff --git a/benchmarks/src/shuffle.cpp b/benchmarks/src/shuffle.cpp
@@ -32,7 +32,7 @@ void bm_shuffle(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->Arg(1 << 20);
 }
 

diff --git a/benchmarks/src/vector_bool_transform.cpp b/benchmarks/src/vector_bool_transform.cpp
@@ -42,7 +42,7 @@ void transform_two_inputs_aligned(benchmark::State& state) {
     }
 }
 
-void common_args(auto bm) {
+void common_args(benchmark::Benchmark* bm) {
     bm->RangeMultiplier(64)->Range(64, 64 << 10);
 }
 

diff --git a/boost-math b/boost-math
diff --git a/llvm-project b/llvm-project
diff --git a/stl/inc/__msvc_chrono.hpp b/stl/inc/__msvc_chrono.hpp
@@ -129,8 +129,10 @@ namespace chrono {
             : _MyRep(static_cast<_Rep>(_Val)) {}
 
         template <class _Rep2, class _Period2,
-            enable_if_t<treat_as_floating_point_v<_Rep>
-                            || (_Ratio_divide_sfinae<_Period2, _Period>::den == 1 && !treat_as_floating_point_v<_Rep2>),
+            enable_if_t<is_convertible_v<const _Rep2&, _Rep>
+                            && (treat_as_floating_point_v<_Rep>
+                                || (_Ratio_divide_sfinae<_Period2, _Period>::den == 1
+                                    && !treat_as_floating_point_v<_Rep2>) ),
                 int> = 0>
         constexpr duration(const duration<_Rep2, _Period2>& _Dur)
             noexcept(is_arithmetic_v<_Rep> && is_arithmetic_v<_Rep2>) // strengthened

diff --git a/stl/inc/__msvc_filebuf.hpp b/stl/inc/__msvc_filebuf.hpp
@@ -138,7 +138,7 @@ class basic_filebuf : public basic_streambuf<_Elem, _Traits> { // stream buffer
         _Init(nullptr, _Newfl);
     }
 
-    explicit basic_filebuf(FILE* const _File) : _Mysb() { // extension
+    explicit basic_filebuf(FILE* const _File) : _Mysb() { // extension, no ownership taking
         _Init(_File, _Newfl);
     }
 

diff --git a/stl/inc/fstream b/stl/inc/fstream
@@ -61,7 +61,8 @@ public:
         : basic_ifstream(_Path.c_str(), _Mode, _Prot) {} // _Prot is an extension
 #endif // _HAS_CXX17
 
-    explicit basic_ifstream(FILE* _File) : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension
+    explicit basic_ifstream(FILE* _File)
+        : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension, no ownership taking
 
     basic_ifstream(basic_ifstream&& _Right) : _Mybase(_STD addressof(_Filebuffer)) {
         _Assign_rv(_STD move(_Right));
@@ -207,7 +208,8 @@ public:
         : basic_ofstream(_Path.c_str(), _Mode, _Prot) {} // _Prot is an extension
 #endif // _HAS_CXX17
 
-    explicit basic_ofstream(FILE* _File) : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension
+    explicit basic_ofstream(FILE* _File)
+        : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension, no ownership taking
 
     basic_ofstream(basic_ofstream&& _Right) : _Mybase(_STD addressof(_Filebuffer)) {
         _Assign_rv(_STD move(_Right));
@@ -358,7 +360,8 @@ public:
         : basic_fstream(_Path.c_str(), _Mode, _Prot) {} // _Prot is an extension
 #endif // _HAS_CXX17
 
-    explicit basic_fstream(FILE* _File) : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension
+    explicit basic_fstream(FILE* _File)
+        : _Mybase(_STD addressof(_Filebuffer)), _Filebuffer(_File) {} // extension, no ownership taking
 
     basic_fstream(basic_fstream&& _Right) : _Mybase(_STD addressof(_Filebuffer)) {
         _Assign_rv(_STD move(_Right));

diff --git a/stl/inc/memory b/stl/inc/memory
@@ -533,7 +533,7 @@ namespace ranges {
 
     struct _Construct_at_fn {
         template <class _Ty, class... _Types>
-            requires requires(_Ty* _Ptr, _Types&&... _Args) {
+            requires (!is_unbounded_array_v<_Ty>) && requires(_Ty* _Ptr, _Types&&... _Args) {
                 ::new (static_cast<void*>(_Ptr)) _Ty(static_cast<_Types &&>(_Args)...); // per LWG-3888
             }
         _STATIC_CALL_OPERATOR constexpr _Ty* operator()(_Ty* _Location, _Types&&... _Args) _CONST_CALL_OPERATOR
@@ -542,7 +542,26 @@ namespace ranges {
 #ifdef __EDG__
             return _STD construct_at(_Location, _STD forward<_Types>(_Args)...);
 #else // ^^^ EDG / Other vvv
-            _MSVC_CONSTEXPR return ::new (static_cast<void*>(_Location)) _Ty(_STD forward<_Types>(_Args)...);
+            if constexpr (is_array_v<_Ty>) {
+                static_assert(sizeof...(_Types) == 0, "The array is only allowed to be value-initialized by "
+                                                      "std::ranges::construct_at. (N5032 [specialized.construct]/2)");
+#if defined(__clang__) // TRANSITION, LLVM-117294
+                ::new (static_cast<void*>(_Location)) _Ty();
+                return __builtin_launder(_Location); // per old resolution of LWG-3436
+#elif defined(_MSC_VER) // TRANSITION, DevCom-10798069
+                if constexpr (is_trivially_destructible_v<_Ty>) {
+                    _MSVC_CONSTEXPR return ::new (_Secret_placement_new_tag{}, static_cast<void*>(_Location)) _Ty[1]();
+                } else {
+                    // For non-trivially-destructible types, the workaround doesn't work
+                    // because additional space is required to record the number of class objects to destroy.
+                    return ::new (static_cast<void*>(_Location)) _Ty[1]();
+                }
+#else // ^^^ workaround / no workaround vvv
+                _MSVC_CONSTEXPR return ::new (static_cast<void*>(_Location)) _Ty[1]();
+#endif // ^^^ no workaround ^^^
+            } else {
+                _MSVC_CONSTEXPR return ::new (static_cast<void*>(_Location)) _Ty(_STD forward<_Types>(_Args)...);
+            }
 #endif // ^^^ Other ^^^
         }
     };
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+1 −0		BUILD.bazel
+17 −7		CMakeLists.txt
+4 −0		CONTRIBUTORS
+2 −2		MODULE.bazel
+1 −1		README.md
+5 −14		bindings/python/google_benchmark/__init__.py
+38 −33		bindings/python/google_benchmark/benchmark.cc
+2 −0		bindings/python/google_benchmark/example.py
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+10 −5		docs/reducing_variance.md
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+6 −1		setup.py
+22 −1		src/CMakeLists.txt
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+2 −0		test/profiler_manager_test.cc
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+2 −2		tools/compare.py
+2 −2		tools/requirements.txt
+1 −1		tools/strip_asm.py
-Original file line number
+Diff line change
@@ Expand Up / @@ -40,7 +40,7 @@ void bm(benchmark::State& state) { @@
         }
     }
-    void common_args(auto bm) {
+    void common_args(benchmark::Benchmark* bm) {
         bm->Arg(2255);
     }
@@ Expand Down @@