clang/test/CodeGen/cxx-default-arg.cpp

   1 // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm %s -o %t
   2
   3 // Note-LABEL: define CLANG_GENERATE_KNOWN_GOOD and compile to generate code
   4 // that makes all of the defaulted arguments explicit. The resulting
   5 // byte code should be identical to the compilation without
   6 // CLANG_GENERATE_KNOWN_GOOD.
   7 #ifdef CLANG_GENERATE_KNOWN_GOOD
   8 #  define DEFARG(...) __VA_ARGS__
   9 #else
  10 #  define DEFARG(...)
  11 #endif
  12
  13 extern int x;
  14 struct S { float x; float y; } s;
  15 double _Complex c;
  16
  17 void f(int i = 0, int j = 1, int k = x, struct S t = s, double _Complex d = c);
  18
  19 void g() {
  20   f(0, 1, x, s DEFARG(, c));
  21   f(0, 1, x DEFARG(, s, c));
  22   f(0, 1 DEFARG(, x, s, c));
  23   f(0 DEFARG(, 1, x, s, c));
  24   f(DEFARG(0, 1, x, s, c));
  25 }