clang/test/SemaCXX/libstdcxx_gets_hack.cpp

   1 // RUN: %clang_cc1 -fsyntax-only %s -std=c++14 -verify
   2
   3 // This is a test for an egregious hack in Clang that works around
   4 // an issue with libstdc++'s detection of whether glibc provides a
   5 // ::gets function. If there is no ::gets, ignore
   6 //   using ::gets;
   7 // in namespace std.
   8 //
   9 // See PR18402 and gcc.gnu.org/PR77795 for more details.
  10
  11 #ifdef BE_THE_HEADER
  12
  13 #pragma GCC system_header
  14 namespace std {
  15   using ::gets;
  16   using ::getx; // expected-error {{no member named 'getx'}}
  17 }
  18
  19 #else
  20
  21 #define BE_THE_HEADER
  22 #include "libstdcxx_pointer_return_false_hack.cpp"
  23
  24 namespace foo {
  25   using ::gets; // expected-error {{no member named 'gets'}}
  26 }
  27
  28 #endif