H-G-Hristov wrote:
> I tried this branch on our Windows builders although I'm not sure if it's
> related or not to this patch:
>
> ```
> # COMPILED WITH
> C:/b/s/w/ir/x/w/llvm_build/./bin/clang-cl.exe
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp
> --driver-mode=g++ --target=x86_64-pc-windows-msvc -fms-runtime-lib=static
> -nostdinc++ -I C:/b/s/w/ir/x/w/llvm_build/include/c++/v1 -I
> C:/b/s/w/ir/x/w/llvm_build/include/x86_64-pc-windows-msvc/c++/v1 -I
> C:/b/s/w/ir/x/w/github-H-G-Hristov-llvm-project/libcxx/test/support
> -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
> -D_CRT_STDIO_ISO_WIDE_SPECIFIERS -DNOMINMAX -std=c++26 -Werror -Wall
> -Wctad-maybe-unsupported -Wextra -Wshadow -Wundef -Wunused-template
> -Wno-unused-command-line-argument -Wno-attributes -Wno-pessimizing-move
> -Wno-noexcept-type -Wno-atomic-alignment -Wno-reserved-module-identifier
> -Wdeprecated-copy -Wdeprecated-copy-dtor -Wno-user-defined-literals
> -Wno-tautological-compare -Wsign-compare -Wunused-variable -Wunused-parameter
> -Wunreachable-code -Wno-unused-local-typedef -Wno-local-type-template-args
> -Wno-c++11-extensions -Wno-unknown-pragmas -Wno-pass-failed
> -Wno-mismatched-new-delete -Wno-redundant-move -Wno-self-move
> -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_ENABLE_EXPERIMENTAL
> -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -Werror=thread-safety
> -Wuser-defined-warnings -llibc++experimental -nostdlib -L
> C:/b/s/w/ir/x/w/llvm_build/./lib/x86_64-pc-windows-msvc -llibc++ -llibcpmt -o
> C:\b\s\w\ir\x\w\llvm_build\runtimes\runtimes-x86_64-pc-windows-msvc-bins\test\libcxx\fuzzing\Output\random.pass.cpp.dir\t.tmp.exe
> # executed command: C:/b/s/w/ir/x/w/llvm_build/./bin/clang-cl.exe
> 'C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp'
> --driver-mode=g++ --target=x86_64-pc-windows-msvc -fms-runtime-lib=static
> -nostdinc++ -I C:/b/s/w/ir/x/w/llvm_build/include/c++/v1 -I
> C:/b/s/w/ir/x/w/llvm_build/include/x86_64-pc-windows-msvc/c++/v1 -I
> C:/b/s/w/ir/x/w/github-H-G-Hristov-llvm-project/libcxx/test/support
> -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
> -D_CRT_STDIO_ISO_WIDE_SPECIFIERS -DNOMINMAX -std=c++26 -Werror -Wall
> -Wctad-maybe-unsupported -Wextra -Wshadow -Wundef -Wunused-template
> -Wno-unused-command-line-argument -Wno-attributes -Wno-pessimizing-move
> -Wno-noexcept-type -Wno-atomic-alignment -Wno-reserved-module-identifier
> -Wdeprecated-copy -Wdeprecated-copy-dtor -Wno-user-defined-literals
> -Wno-tautological-compare -Wsign-compare -Wunused-variable -Wunused-parameter
> -Wunreachable-code -Wno-unused-local-typedef -Wno-local-type-template-args
> -Wno-c++11-extensions -Wno-unknown-pragmas -Wno-pass-failed
> -Wno-mismatched-new-delete -Wno-redundant-move -Wno-self-move
> -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_ENABLE_EXPERIMENTAL
> -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -Werror=thread-safety
> -Wuser-defined-warnings -llibc++experimental -nostdlib -L
> C:/b/s/w/ir/x/w/llvm_build/./lib/x86_64-pc-windows-msvc -llibc++ -llibcpmt -o
> 'C:\b\s\w\ir\x\w\llvm_build\runtimes\runtimes-x86_64-pc-windows-msvc-bins\test\libcxx\fuzzing\Output\random.pass.cpp.dir\t.tmp.exe'
> # .---command stderr------------
> # | In file included from
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:16:
> # | In file included from C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\cmath:319:
> # | In file included from
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\math.h:301:
> # | In file included from C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\math.h:11:
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:413:16: error: call to
> 'fpclassify' is ambiguous
> # | 413 | return fpclassify(_X) == FP_NAN;
> # | | ^~~~~~~~~~
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:166:12:
> note: in instantiation of function template specialization 'isnan<short>'
> requested here
> # | 166 | if (std::isnan(res)) {
> # | | ^
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:178:10:
> note: in instantiation of function template specialization
> 'helper<std::uniform_int_distribution<short>>' requested here
> # | 178 | return
> helper<std::uniform_int_distribution<std::int16_t>>(data, size) ||
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:288:31: note: candidate
> function
> # | 288 | _Check_return_ inline int fpclassify(_In_ float _X) throw()
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:293:31: note: candidate
> function
> # | 293 | _Check_return_ inline int fpclassify(_In_ double _X) throw()
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:298:31: note: candidate
> function
> # | 298 | _Check_return_ inline int fpclassify(_In_ long double _X)
> throw()
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:413:16: error: call to
> 'fpclassify' is ambiguous
> # | 413 | return fpclassify(_X) == FP_NAN;
> # | | ^~~~~~~~~~
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:166:12:
> note: in instantiation of function template specialization 'isnan<bool>'
> requested here
> # | 166 | if (std::isnan(res)) {
> # | | ^
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:180:10:
> note: in instantiation of function template specialization
> 'helper<std::bernoulli_distribution>' requested here
> # | 180 | helper<std::bernoulli_distribution>(data, size)
> ||
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:288:31: note: candidate
> function
> # | 288 | _Check_return_ inline int fpclassify(_In_ float _X) throw()
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:293:31: note: candidate
> function
> # | 293 | _Check_return_ inline int fpclassify(_In_ double _X) throw()
> # | | ^
> # | C:\b\s\w\ir\cache\windows_sdk\Windows
> Kits\10\Include\10.0.19041.0\ucrt\corecrt_math.h:298:31: note: candidate
> function
> # | 298 | _Check_return_ inline int fpclassify(_In_ long double _X)
> throw()
> # | | ^
> # | In file included from
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:20:
> # | In file included from
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\random:1686:
> # |
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\__random/clamp_to_integral.h:36:86:
> error: shift count is negative [-Werror,-Wshift-count-negative]
> # | 36 | return _FloatBigger ? numeric_limits<_IntT>::max() :
> (numeric_limits<_IntT>::max() >> _Bits << _Bits);
> # | |
> ^ ~~~~~
> # |
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\__random/clamp_to_integral.h:46:27:
> note: in instantiation of function template specialization
> 'std::__max_representable_int_for_float<short, double, true, -38>' requested
> here
> # | 46 | const _IntT __max_val =
> __max_representable_int_for_float<_IntT, _RealT>();
> # | | ^
> # |
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\__random/poisson_distribution.h:153:21:
> note: in instantiation of function template specialization
> 'std::__clamp_to_integral<short, double>' requested here
> # | 153 | return std::__clamp_to_integral<result_type>(__tx);
> # | | ^
> # |
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\__random/poisson_distribution.h:83:12:
> note: in instantiation of function template specialization
> 'std::poisson_distribution<short>::operator()<std::mersenne_twister_engine<unsigned
> int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15,
> 4022730752, 18, 1812433253>>' requested here
> # | 83 | return (*this)(__g, __p_);
> # | | ^
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:165:23:
> note: in instantiation of function template specialization
> 'std::poisson_distribution<short>::operator()<std::mersenne_twister_engine<unsigned
> int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15,
> 4022730752, 18, 1812433253>>' requested here
> # | 165 | volatile auto res = d(engine);
> # | | ^
> # |
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:181:10:
> note: in instantiation of function template specialization
> 'helper<std::poisson_distribution<short>>' requested here
> # | 181 | helper<std::poisson_distribution<std::int16_t>>(data,
> size) ||
> # | | ^
> # | In file included from
> C:\b\s\w\ir\x\w\github-H-G-Hristov-llvm-project\libcxx\test\libcxx\fuzzing\random.pass.cpp:20:
> # | In file included from
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\random:1686:
> # |
> C:/b/s/w/ir/x/w/llvm_build/include/c++/v1\__random/clamp_to_integral.h:36:95:
> error: shift count is negative [-Werror,-Wshift-count-negative]
> # | 36 | return _FloatBigger ? numeric_limits<_IntT>::max() :
> (numeric_limits<_IntT>::max() >> _Bits << _Bits);
> # | |
> ^ ~~~~~
> # | 4 errors generated.
> # `-----------------------------
> # error: command failed with exit status: 1
>
> --
> ```
>
> https://logs.chromium.org/logs/fuchsia/led/phosek_google.com/62644843c966785c9dedf065a79d80df8734b4df5ff7703ea3c2a2b5643cec05/+/u/clang/test/stdout
> is the full log.
This issue was already reported a while back here:
https://github.com/llvm/llvm-project/issues/70225
https://github.com/llvm/llvm-project/pull/79032
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