[pstl] Fix incorrect usage of std::invoke_result
std::invoke_result takes function object type and arguments separately
(unlike std::result_of) so, std::invoke_result_t<F()> usage is
incorrect.
On the other hand, we don't need std::invoke() semantics here at all. So
just simplifying the code without extra dependency and use trailing
return type as the fix.
Reviewed By: MikeDvorskiy
Differential Revision: https://reviews.llvm.org/D114624
GitOrigin-RevId: f824bb0e36fc7099923f583e4eea4aaa7d296957
diff --git a/include/pstl/internal/utils.h b/include/pstl/internal/utils.h
index 5de8f75..c181ddb 100644
--- a/include/pstl/internal/utils.h
+++ b/include/pstl/internal/utils.h
@@ -63,15 +63,15 @@
}
template <typename _F1, typename _F2>
-typename std::invoke_result<_F1()>::type
-__invoke_if_else(std::true_type, _F1 __f1, _F2)
+auto
+__invoke_if_else(std::true_type, _F1 __f1, _F2) -> decltype(__f1())
{
return __f1();
}
template <typename _F1, typename _F2>
-typename std::invoke_result<_F2()>::type
-__invoke_if_else(std::false_type, _F1, _F2 __f2)
+auto
+__invoke_if_else(std::false_type, _F1, _F2 __f2) -> decltype(__f2())
{
return __f2();
}
