clang/test/SemaTemplate/instantiation-depth.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -ftemplate-depth=5 -ftemplate-backtrace-limit=4 %s
   2 // RUN: %clang -fsyntax-only -Xclang -verify -ftemplate-depth-5 -ftemplate-backtrace-limit=4 %s
   3 // RUN: %clang -fsyntax-only -Xclang -verify -ftemplate-depth=5 -ftemplate-backtrace-limit=4 %s
   4
   5 #ifndef NOEXCEPT
   6
   7 template<typename T> struct X : X<T*> { }; \
   8 // expected-error{{recursive template instantiation exceeded maximum depth of 5}} \
   9 // expected-note 3 {{instantiation of template class}} \
  10 // expected-note {{skipping 2 contexts in backtrace}} \
  11 // expected-note {{use -ftemplate-depth=N to increase recursive template instantiation depth}}
  12
  13 void test() {
  14   (void)sizeof(X<int>); // expected-note {{instantiation of template class}}
  15 }
  16
  17 #else
  18
  19 // RUN: %clang_cc1 -fsyntax-only -verify -ftemplate-depth=5 -ftemplate-backtrace-limit=4 -std=c++11 -DNOEXCEPT %s
  20
  21 template<typename T> struct S {
  22   S() noexcept(noexcept(S<S>())); \
  23 // expected-error{{recursive template instantiation exceeded maximum depth of 5}} \
  24 // expected-note 3 {{in instantiation of exception spec}} \
  25 // expected-note {{skipping 2 contexts in backtrace}} \
  26 // expected-note {{use -ftemplate-depth=N to increase recursive template instantiation depth}}
  27 };
  28 S<void> t; // expected-note {{in instantiation of exception spec}}
  29
  30 #endif