gcc/testsuite/gcc.dg/c99-complex-2.c

   1 /* Test for _Complex: in C99 only.  Test for increment and decrement.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
   5
   6 /* Use of ++ and -- on complex types (both prefix and postfix) is a
   7    C99 constraint violation (6.5.2.4p1, 6.5.3.1p1).
   8 */
   9
  10 _Complex double
  11 foo (_Complex double z)
  12 {
  13   z++; /* { dg-bogus "warning" "warning in place of error" } */
  14   /* { dg-error "complex" "postinc" { target *-*-* } .-1 } */
  15   ++z; /* { dg-bogus "warning" "warning in place of error" } */
  16   /* { dg-error "complex" "preinc" { target *-*-* } .-1 } */
  17   z--; /* { dg-bogus "warning" "warning in place of error" } */
  18   /* { dg-error "complex" "postdec" { target *-*-* } .-1 } */
  19   --z; /* { dg-bogus "warning" "warning in place of error" } */
  20   /* { dg-error "complex" "predec" { target *-*-* } .-1 } */
  21   return z;
  22 }