clang/test/CXX/dcl.decl/dcl.fct.def/dcl.fct.def.general/p8.cpp

   1 // RUN: %clang_cc1 -std=c++11 %s -verify
   2 // expected-no-diagnostics
   3
   4 using size_t = decltype(sizeof(0));
   5 template<typename T> struct check;
   6 template<size_t N> struct check<const char[N]> {};
   7
   8 constexpr bool startswith(const char *p, const char *q) {
   9   return !*q || (*p == *q && startswith(p + 1, q + 1));
  10 }
  11 constexpr bool contains(const char *p, const char *q) {
  12   return *p && (startswith(p, q) || contains(p + 1, q));
  13 }
  14
  15 void foo() {
  16   check<decltype(__func__)>();
  17   static_assert(contains(__func__, "foo"), "");
  18 }