1. [flang] Fix pimpl idiom for IntrinsicProcTable. (details)
Commit d590c854303959bcaa78746a62b9a8f81583c111 by llvm-project
[flang] Fix pimpl idiom for IntrinsicProcTable.

The class IntrinsicProcTable uses the pimpl idiom and manages its own pointer-to-implementation.  However, it violates the rule-of-five and does not implement a move-constructor or assignment-operator. Due to differences between compilers in implementation copy elision, these may or may not be used. Due to the missing user implementation for resource handling, using the results in runtime errors.

Fix my using `std::unique_ptr` instead of custom resource management.

Reviewed By: klausler

Differential Revision:
The file was modifiedflang/lib/Evaluate/intrinsics.cpp
The file was modifiedflang/include/flang/Evaluate/intrinsics.h
The file was modifiedflang/include/flang/Common/idioms.h