xref: /llvm-project/clang/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp (revision 01ecd3107e6475722249deee010755690f0a91be) 
1*01ecd310SAlexander Kornienko // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 -Wimplicit-fallthrough %s
2*01ecd310SAlexander Kornienko 
fallthrough_in_blocks()3*01ecd310SAlexander Kornienko void fallthrough_in_blocks() {
4*01ecd310SAlexander Kornienko   void (^block)() = ^{
5*01ecd310SAlexander Kornienko     int x = 0;
6*01ecd310SAlexander Kornienko     switch (x) {
7*01ecd310SAlexander Kornienko     case 0:
8*01ecd310SAlexander Kornienko       x++;
9*01ecd310SAlexander Kornienko       [[clang::fallthrough]]; // no diagnostics
10*01ecd310SAlexander Kornienko     case 1:
11*01ecd310SAlexander Kornienko       x++;
12*01ecd310SAlexander Kornienko     default: // \
13*01ecd310SAlexander Kornienko         expected-warning{{unannotated fall-through between switch labels}} \
14*01ecd310SAlexander Kornienko         expected-note{{insert 'break;' to avoid fall-through}}
15*01ecd310SAlexander Kornienko       break;
16*01ecd310SAlexander Kornienko     }
17*01ecd310SAlexander Kornienko   };
18*01ecd310SAlexander Kornienko   block();
19*01ecd310SAlexander Kornienko }
20