clang/test/SemaTemplate/stack-exhaustion.cpp

   1 // RUN: %clang_cc1 -verify %s
   2 // REQUIRES: thread_support
   3
   4 // FIXME: Detection of, or recovery from, stack exhaustion does not work on
   5 // NetBSD at the moment. Since this is a best-effort mitigation for exceeding
   6 // implementation limits, just disable the test.
   7 // UNSUPPORTED: system-netbsd
   8
   9 // expected-warning@* 0-1{{stack nearly exhausted}}
  10 // expected-note@* 0+{{}}
  11
  12 template<int N> struct X : X<N-1> {};
  13 template<> struct X<0> {};
  14 X<1000> x;
  15
  16 template<typename ...T> struct tuple {};
  17 template<typename ...T> auto f(tuple<T...> t) -> decltype(f(tuple<T...>(t))) {} // expected-error {{exceeded maximum depth}}
  18 void g() { f(tuple<int, int>()); }
  19
  20 int f(X<0>);
  21 template<int N> auto f(X<N>) -> f(X<N-1>());
  22
  23 int k = f(X<1000>());