44eee659 - [AST] Print NTTP args as string-literals when possible

Wed, 02 Mar 2022 01:33:43 +0000

[AST] Print NTTP args as string-literals when possibleC++20 non-type template parameter prints `MyType<{{116, 104, 105, 115}}>` when the code is as simple as `MyType<"this">`. This patch prints `MyType<{"this"}>`, with one layer of braces preserved for the intermediate structural type to trigger CTAD.`StringLiteral` handles this case, but `StringLiteral` inside `APValue` code looks like a circular dependency. The proposed patch implements a cheap strategy to emit string literals in diagnostic messages only when they are readable and fall back to integer sequences.Reviewed By: aaron.ballmanDifferential Revision: https://reviews.llvm.org/D115031 List of files: /llvm-project-15.0.7/clang/test/SemaTemplate/temp_arg_string_printing.cpp

Changes in temp_arg_string_printing.cpp

44eee659 - [AST] Print NTTP args as string-literals when possible