================ @@ -0,0 +1,13 @@ +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++20 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++23 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++2c %s -verify -fexceptions -fcxx-exceptions -pedantic-errors +// expected-no-diagnostics + +// This file intentionally does not end with a newline. CWG787 made this +// well-defined behavior. + +// cwg787: 3.0 ---------------- Endilll wrote:
> Because we accept the code and do the right thing with it? `-pedantic-errors` reject it up until your patch, IIUC. > AIUI, the Core Issue was that it went from UB to well-defined behavior, but > we diagnose well-defined behavior all the time; it doesn't mean we don't > implement the DR, right? (I'm fine with changing the marking, it just wasn't > clear to me that any changes were needed to conform to the DR.) My reading of changes to [lex.phases] in [CWG787](https://cplusplus.github.io/CWG/issues/787.html) doesn't leave a room for issuing a diagnostic while remaining conformant. Maybe this is the source of the confusion. When we determine availability of a DR in older version, we check them against our current understanding of what the behavior should be. In this case, I think it is that no diagnostic should be issued. Which means `// cwg787: 21` is the correct status here. Let me know if I'm missing something. https://github.com/llvm/llvm-project/pull/131794 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
