gcc/testsuite/gcc.dg/builtins-28.c

   1 /* Test that creal and cimag built-in functions do not return lvalues.  */
   2 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "" } */
   5
   6 extern float crealf (float _Complex);
   7 extern double creal (double _Complex);
   8 extern long double creall (long double _Complex);
   9
  10 extern float cimagf (float _Complex);
  11 extern double cimag (double _Complex);
  12 extern long double cimagl (long double _Complex);
  13
  14 float _Complex fc;
  15 double _Complex dc;
  16 long double _Complex ldc;
  17
  18 void
  19 foo (void)
  20 {
  21   crealf (fc) = 0; /* { dg-error "lvalue" "crealf not lvalue" } */
  22   cimagf (fc) = 0; /* { dg-error "lvalue" "cimagf not lvalue" } */
  23   creal (dc) = 0; /* { dg-error "lvalue" "creal not lvalue" } */
  24   cimag (dc) = 0; /* { dg-error "lvalue" "cimag not lvalue" } */
  25   creall (ldc) = 0; /* { dg-error "lvalue" "creall not lvalue" } */
  26   cimagl (ldc) = 0; /* { dg-error "lvalue" "cimagl not lvalue" } */
  27 }