tools/conf_tests/can_assign_non_extern_c_functions_to_extern_c_cb.cc


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// Configuration-time test program, used in Meson build.
// Check whether the compiler allows us to use a non-extern "C" function,
// such as a static member function, to an extern "C" function pointer,
// such as a GTK callback.
// Corresponds to the M4 macro GLIBMM_CXX_CAN_ASSIGN_NON_EXTERN_C_FUNCTIONS_TO_EXTERN_C_CALLBACKS.

extern "C"
{
struct somestruct
{
  void (*callback) (int);
};
} // extern "C"

void somefunction(int) {}

int main()
{
  somestruct something;
  something.callback = &somefunction;
  return 0;
}