clang/test/CodeCompletion/skip-auto-funcs.cpp

   1 // We run clang in completion mode to force skipping of function bodies and
   2 // check if the function bodies were skipped by observing the warnings that
   3 // clang produces.
   4 // RUN: not %clang_cc1 -std=c++14 -fsyntax-only -code-completion-at=%s:60:1 %s -o - 2>&1 | FileCheck %s
   5 template <class T>
   6 auto not_skipped() {
   7   int x;
   8   if (x = 10) {}
   9   // Check that this function is not skipped.
  10   // CHECK: 8:9: warning: using the result of an assignment as a condition without parentheses
  11   return 1;
  12 }
  13
  14 template <class T>
  15 auto lambda_not_skipped = []() {
  16   int x;
  17   if (x = 10) {}
  18   // Check that this function is not skipped.
  19   // CHECK: 17:9: warning: using the result of an assignment as a condition without parentheses
  20   return 1;
  21 }
  22
  23 template <class T>
  24 auto skipped() -> T {
  25   int x;
  26   if (x = 10) {}
  27   // Check that this function is skipped.
  28   // CHECK-NOT: 26:9: warning: using the result of an assignment as a condition without parentheses
  29   return 1;
  30 };
  31
  32 auto lambda_skipped = []() -> int {
  33   int x;
  34   if (x = 10) {}
  35   // This could potentially be skipped, but it isn't at the moment.
  36   // CHECK: 34:9: warning: using the result of an assignment as a condition without parentheses
  37   return 1;
  38 };
  39
  40 template <class T>
  41 decltype(auto)** not_skipped_ptr() {
  42   int x;
  43   if (x = 10) {}
  44   // Check that this function is not skipped.
  45   // CHECK: 43:9: warning: using the result of an assignment as a condition without parentheses
  46   return T();
  47 }
  48
  49 template <class T>
  50 decltype(auto) not_skipped_decltypeauto() {
  51   int x;
  52   if (x = 10) {}
  53   // Check that this function is not skipped.
  54   // CHECK: 52:9: warning: using the result of an assignment as a condition without parentheses
  55   return 1;
  56 }
  57
  58 int test() {
  59   int complete_in_this_function;
  60   // CHECK: COMPLETION: complete_in_this_function
  61 }