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 // Run this test for i686 as this is the target that modifies default FP options.
   8 // RUN: %clang_cc1 -triple i686-pc-linux-gnu -fdelayed-template-parsing -std=c++14 -emit-pch -fpch-instantiate-templates %s -o %t.pch -verify
   9 // RUN: %clang_cc1 -triple i686-pc-linux-gnu -fdelayed-template-parsing -std=c++14 -include-pch %t.pch %s -verify
  10
  11 #ifndef HEADER_INCLUDED
  12
  13 #define HEADER_INCLUDED
  14
  15 // pr33561
  16 class ArrayBuffer;
  17 template <typename T> class Trans_NS_WTF_RefPtr {
  18 public:
  19   ArrayBuffer *operator->() { return nullptr; }
  20 };
  21 Trans_NS_WTF_RefPtr<ArrayBuffer> get();
  22 template <typename _Visitor>
  23 constexpr void visit(_Visitor __visitor) {
  24   __visitor(get()); // expected-note {{in instantiation}}
  25 }
  26 class ArrayBuffer {
  27   char data() {
  28     visit([](auto buffer) -> char { // expected-note {{in instantiation}}
  29       buffer->data();
  30     }); // expected-warning {{non-void lambda does not return a value}}
  31   } // expected-warning {{non-void function does not return a value}}
  32 };
  33
  34 #else
  35
  36 // expected-no-diagnostics
  37
  38 #endif