clang/test/SemaCXX/P30636.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough -Wunreachable-code-fallthrough %s
   2 // expected-no-diagnostics
   3
   4 template<bool param>
   5 int fallthrough_template(int i)
   6 {
   7   switch (i) {
   8     case 1:
   9       if (param)
  10         return 3;
  11       [[clang::fallthrough]]; // no warning here, for an unreachable annotation (in the fallthrough_template<true> case) in a template function
  12     case 2:
  13       return 4;
  14     default:
  15       return 5;
  16   }
  17 }
  18
  19 template int fallthrough_template<true>(int);
  20