clang/test/PCH/late-parsed-instantiations.cpp

   1 // RUN: %clang_cc1 -fdelayed-template-parsing -std=c++14 -emit-pch %s -o %t.pch -verify
   2 // RUN: %clang_cc1 -fdelayed-template-parsing -std=c++14 -include-pch %t.pch %s -verify
   3
   4 // RUN: %clang_cc1 -fdelayed-template-parsing -std=c++14 -emit-pch -fpch-instantiate-templates %s -o %t.pch -verify
   5 // RUN: %clang_cc1 -fdelayed-template-parsing -std=c++14 -include-pch %t.pch %s -verify
   6
   7 #ifndef HEADER_INCLUDED
   8
   9 #define HEADER_INCLUDED
  10
  11 // pr33561
  12 class ArrayBuffer;
  13 template <typename T> class Trans_NS_WTF_RefPtr {
  14 public:
  15   ArrayBuffer *operator->() { return nullptr; }
  16 };
  17 Trans_NS_WTF_RefPtr<ArrayBuffer> get();
  18 template <typename _Visitor>
  19 constexpr void visit(_Visitor __visitor) {
  20   __visitor(get()); // expected-note {{in instantiation}}
  21 }
  22 class ArrayBuffer {
  23   char data() {
  24     visit([](auto buffer) -> char { // expected-note {{in instantiation}}
  25       buffer->data();
  26     }); // expected-warning {{non-void lambda does not return a value}}
  27   } // expected-warning {{non-void function does not return a value}}
  28 };
  29
  30 #else
  31
  32 // expected-no-diagnostics
  33
  34 #endif