66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
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// RUN: %clang_cc1 -verify %s -DTEST=1
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// RUN: %clang_cc1 -verify %s -DTEST=2
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// RUN: %clang_cc1 -verify %s -DTEST=3
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// REQUIRES: thread_support
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// FIXME: Detection of, or recovery from, stack exhaustion does not work on
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// NetBSD at the moment. Since this is a best-effort mitigation for exceeding
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// implementation limits, just disable the test.
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// UNSUPPORTED: system-netbsd
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// asan has own stack-overflow check.
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// UNSUPPORTED: asan
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// expected-warning@* 0-1{{stack nearly exhausted}}
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// expected-note@* 0+{{}}
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#if TEST == 1
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template<int N> struct X : X<N-1> {};
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template<> struct X<0> {};
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X<1000> x;
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template<typename ...T> struct tuple {};
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template<typename ...T> auto f(tuple<T...> t) -> decltype(f(tuple<T...>(t))) {} // expected-error {{exceeded maximum depth}}
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void g() { f(tuple<int, int>()); }
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int f(X<0>);
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template<int N> auto f(X<N>) -> f(X<N-1>());
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int k = f(X<1000>());
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#elif TEST == 2
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namespace template_argument_recursion {
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struct ostream;
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template<typename T> T &&declval();
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namespace mlir {
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template<typename T, typename = decltype(declval<ostream&>() << declval<T&>())>
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ostream &operator<<(ostream& os, const T& obj); // expected-error {{exceeded maximum depth}}
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struct Value;
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}
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void printFunctionalType(ostream &os, mlir::Value &v) { os << v; }
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}
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#elif TEST == 3
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namespace template_parameter_type_recursion {
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struct ostream;
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template<typename T> T &&declval();
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template<bool B, typename T> struct enable_if { using type = T; };
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namespace mlir {
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template<typename T, typename enable_if<declval<ostream&>() << declval<T&>(), void*>::type = nullptr>
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ostream &operator<<(ostream& os, const T& obj); // expected-error {{exceeded maximum depth}}
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struct Value;
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}
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void printFunctionalType(ostream &os, mlir::Value &v) { os << v; }
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}
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#else
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#error unknown test
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#endif
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