llvm-project/clang/test/SemaTemplate/instantiation-depth.cpp

// RUN: %clang_cc1 -fsyntax-only -verify -ftemplate-depth 5 -ftemplate-backtrace-limit 4 %s
// RUN: %clang -fsyntax-only -Xclang -verify -ftemplate-depth-5 -ftemplate-backtrace-limit=4 %s
// RUN: %clang -fsyntax-only -Xclang -verify -ftemplate-depth=5 -ftemplate-backtrace-limit=4 %s

template<typename T> struct X : X<T*> { }; \
// expected-error{{recursive template instantiation exceeded maximum depth of 5}} \
// expected-note 3 {{instantiation of template class}} \
// expected-note {{skipping 2 contexts in backtrace}} \
// expected-note {{use -ftemplate-depth=N to increase recursive template instantiation depth}}

void test() { 
  (void)sizeof(X<int>); // expected-note {{instantiation of template class}}
}