1 // RUN: not %clang_cc1 -std=c++17 -fsyntax-only -ferror-limit 1 %s 2>&1 | FileCheck %s 2 3 #error Error 1 4 #error Error 2 5 // CHECK: fatal error: too many errors emitted, stopping now 6 7 namespace rdar39051732 { 8 9 template<class T> struct A { 10 template <class U> A(T&, ...); 11 }; 12 // Deduction guide triggers constructor instantiation. 13 template<class T> A(const T&, const T&) -> A<T&>; 14 15 } 16 17