clang/test/PCH/pragma-diag-section.cpp

   1 // Test this without pch.
   2 // RUN: %clang_cc1 %s -include %s -verify -fsyntax-only -Wuninitialized
   3
   4 // Test with pch.
   5 // RUN: %clang_cc1 %s -emit-pch -o %t
   6 // RUN: %clang_cc1 %s -include-pch %t -verify -fsyntax-only -Wuninitialized
   7
   8 // RUN: %clang_cc1 %s -emit-pch -fpch-instantiate-templates -o %t
   9 // RUN: %clang_cc1 %s -include-pch %t -verify -fsyntax-only -Wuninitialized
  10
  11 #ifndef HEADER
  12 #define HEADER
  13
  14 #pragma clang diagnostic push
  15 #pragma clang diagnostic ignored "-Wuninitialized"
  16 template <typename T>
  17 struct TS1 {
  18     void m() {
  19       T a;
  20       T b = a;
  21     }
  22 };
  23 #pragma clang diagnostic pop
  24
  25 #else
  26
  27
  28 template <typename T>
  29 struct TS2 {
  30     void m() {
  31       T a;
  32       T b = a; // expected-warning {{variable 'a' is uninitialized}} \
  33                   expected-note@44 {{in instantiation of member function}} \
  34                   expected-note@31 {{initialize the variable 'a' to silence}}
  35     }
  36 };
  37
  38 void f() {
  39     TS1<int> ts1;
  40     ts1.m();
  41
  42
  43     TS2<int> ts2;
  44     ts2.m();
  45 }
  46
  47 #endif