en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/test/SemaCXX/designated-initializers-base-class.cpp#5030928d [c++20] Implement semantic restrictions for C++20 designatedinitializers.This has some interesting interactions with our existing extensions tosupport C99 designated initializers as an extension in C++. Those areresolved as follows: * We continue to permit the full breadth of C99 designated initializers in C++, with the exception that we disallow a partial overwrite of an initializer with a non-trivially-destructible type. (Full overwrite is OK, because we won't run the first initializer at all.) * The C99 extensions are disallowed in SFINAE contexts and during overload resolution, where they could change the meaning of valid programs. * C++20 disallows reordering of initializers. We only check for that for the simple cases that the C++20 rules permit (designators of the form '.field_name =' and continue to allow reordering in other cases). It would be nice to improve this behavior in future. * All C99 designated initializer extensions produce a warning by default in C++20 mode. People are going to learn the C++ rules based on what Clang diagnoses, so it's important we diagnose these properly by default. * In C++ <= 17, we apply the C++20 rules rather than the C99 rules, and so still diagnose C99 extensions as described above. We continue to accept designated C++20-compatible initializers in C++ <= 17 silently by default (but naturally still reject under -pedantic-errors).This is not a complete implementation of P0329R4. In particular, thatpaper introduces new non-C99-compatible syntax { .field { init } }, andwe do not support that yet.This is based on a previous patch by Don Hinton, though I've madesubstantial changes when addressing the above interactions.Differential Revision: https://reviews.llvm.org/D59754llvm-svn: 370544 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/designated-initializers-base-class.cpp Fri, 30 Aug 2019 22:52:55 +0000 Richard Smith <richard-llvm@metafoo.co.uk> http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/test/SemaCXX/designated-initializers-base-class.cpp#8eccb9bb [Sema] Fix bug in handling of designated initializer.CheckDesignatedInitializer wasn't taking into account the base classeswhen computing the index for the field in the derived class, whichcaused the test case to crash during IRGen because of a malformed AST.rdar://problem/26795040Differential Revision: https://reviews.llvm.org/D28705llvm-svn: 292245 List of files: /llvm-project-15.0.7/clang/test/SemaCXX/designated-initializers-base-class.cpp Tue, 17 Jan 2017 19:35:54 +0000 Akira Hatanaka <ahatanaka@apple.com>