llvm-project/clang/test/SemaCXX/PR49534.cpp

// RUN: %clang_cc1 -x c++ -fsyntax-only %s -verify

static union {     // expected-warning {{declaration does not declare anything}}
  virtual int a(); // expected-error {{unions cannot have virtual functions}}
};
[clang][Sema] Don't try to initialize implicit variable of invalid anonymous union/struct This fixes https://bugs.llvm.org/show_bug.cgi?id=49534, where the call to the constructor of the anonymous union is checked and triggers assertion failure when trying to retrieve the alignment of the `this` argument (which is a union with virtual function). The extra check for alignment was introduced in D97187. Reviewed By: tmatheson Differential Revision: https://reviews.llvm.org/D98548 2021-03-31 09:05:24 +08:00			`// RUN: %clang_cc1 -x c++ -fsyntax-only %s -verify`

			`static union { // expected-warning {{declaration does not declare anything}}`
[Sema] Mark virtual method declaration in union as invalid Currently, this is only diagnosed but the decl is not marked invalid. This may hit assertions down the path. This also reverts the fix for PR49534 since it is not needed anymore. Reviewed By: hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D113145 2021-11-10 02:33:33 +08:00			`virtual int a(); // expected-error {{unions cannot have virtual functions}}`
[clang][Sema] Don't try to initialize implicit variable of invalid anonymous union/struct This fixes https://bugs.llvm.org/show_bug.cgi?id=49534, where the call to the constructor of the anonymous union is checked and triggers assertion failure when trying to retrieve the alignment of the `this` argument (which is a union with virtual function). The extra check for alignment was introduced in D97187. Reviewed By: tmatheson Differential Revision: https://reviews.llvm.org/D98548 2021-03-31 09:05:24 +08:00			`};`