teak-llvm/clang/test/SemaCXX/P30636.cpp
Richard Smith 7532d3790f Suppress warning on unreachable [[clang::fallthrough]] within a template instantiation.
We don't know whether some other instantiation of the template might be able to
reach the annotation, so warning on it has a high chance of false positives.

Patch by Ahmed Asadi!

Differential Revision: https://reviews.llvm.org/D31069

llvm-svn: 298477
2017-03-22 01:49:19 +00:00

21 lines
516 B
C++

// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough %s
// expected-no-diagnostics
template<bool param>
int fallthrough_template(int i)
{
switch (i) {
case 1:
if (param)
return 3;
[[clang::fallthrough]]; // no warning here, for an unreachable annotation (in the fallthrough_template<true> case) in a template function
case 2:
return 4;
default:
return 5;
}
}
template int fallthrough_template<true>(int);