kmuseth
commented
2 years ago Isn’t it simply the fact that std::result_of is removed in C++20?
For C++20:
using ReturnType = typename std::result_of<MethodPtr(Class*)>::type; should be replaced with:
using ReturnType = typename std::invoke_result_t<MethodPtr, Class*>;
Cheers, Ken
On Nov 11, 2022, at 9:46 PM, Samuel Reid @.***> wrote:
Environment
Operating System: Windows 10 Pro Version / Commit SHA: current master HEAD Other: Visual Studio 2022 using C++20
Describe the bug
Using ISO C++20 Standard (/std:c++20) causes the following errors in Visual Studio 2022:
Error C2760 syntax error: ')' was unexpected here; expected ';' Project1 C:\vcpkg\installed\x64-windows\include\nanovdb\util\GridBuilder.h 255
Error C2760 syntax error: 'const' was unexpected here; expected ')' Project1 C:\vcpkg\installed\x64-windows\include\nanovdb\util\GridBuilder.h 255
Error C3329 syntax error: expected 'identifier' not ')' Project1 C:\vcpkg\installed\x64-windows\include\nanovdb\util\GridBuilder.h 255
Error C3878 syntax error: unexpected token ')' following 'expression_statement' Project1 C:\vcpkg\installed\x64-windows\include\nanovdb\util\GridBuilder.h 255
Error C3878 syntax error: unexpected token '>' following 'simple_declaration' Project1 C:\vcpkg\installed\x64-windows\include\nanovdb\util\GridBuilder.h 255
The actual line in GridBuilder.h. causing the syntax errorI believe this documentation is related to the error.
To Reproduce
Steps to reproduce the behavior:
Using the environment specified above, attempt to build a C++ file having #include <nanovdb/util/GridBuilder.h>, or in my case, #include <nanovdb/util/OpenToNanoVDB.h> which eventually includes GridBuilder.h. Expected behavior
No syntax errors, as is seen on C++17 and earlier
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wilkesreid
Environment
Operating System: Windows 10 Pro Version / Commit SHA: current master HEAD Other: Visual Studio 2022 using C++20
Describe the bug
Using ISO C++20 Standard (/std:c++20) causes the following errors in Visual Studio 2022:
The actual line in GridBuilder.h causing the syntax error
I believe this documentation is related to the error.
To Reproduce
Steps to reproduce the behavior:
#include <nanovdb/util/GridBuilder.h>, or in my case,#include <nanovdb/util/OpenToNanoVDB.h>which eventually includes GridBuilder.h.Expected behavior
No syntax errors, as is seen on C++17 and earlier