gcc/testsuite/gcc.dg/Wduplicate-decl-specifier.c

   1 /* PR43651 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wduplicate-decl-specifier" } */
   4
   5 typedef const int CT1;
   6 #define CT2 const int
   7 typedef volatile int VT1;
   8 #define VT2 volatile int
   9 typedef char *restrict RT1;
  10 #define RT2 char *restrict
  11
  12 void
  13 foo (void)
  14 {
  15   const CT1 x1;
  16   const CT2 x2;
  17   CT1 const x3;
  18   CT2 const x4;
  19   const int const x5; /* { dg-warning "duplicate .const." } */
  20   const int *const x6;
  21   volatile VT1 y1;
  22   volatile VT2 y2;
  23   VT1 volatile y3;
  24   VT2 volatile y4;
  25   volatile int volatile y5; /* { dg-warning "duplicate .volatile." } */
  26   volatile int *volatile y6;
  27   RT1 restrict r1;
  28   RT2 restrict r2;
  29   restrict RT1 r3;
  30   /* "restrict RT2" is invalid */
  31   char *restrict restrict r4; /* { dg-warning "duplicate .restrict." } */
  32   char *restrict *restrict r5;
  33 }
  34
  35 void c1(const CT1 t) { }
  36 void c2(const CT2 t) { }
  37 void c3(CT1 const t) { }
  38 void c4(CT2 const t) { }
  39 void c5(const int const t) { }  /* { dg-warning "duplicate .const." } */
  40 void v1(volatile VT1 t) { }
  41 void v2(volatile VT2 t) { }
  42 void v3(VT1 volatile t) { }
  43 void v4(VT2 volatile t) { }
  44 void v5(volatile int volatile t) { } /* { dg-warning "duplicate .volatile." } */
  45 void r1(restrict RT1 t) { }
  46 void r2(RT1 restrict t) { }
  47 void r3(RT2 restrict t) { }
  48 void r4(char *restrict restrict t) { }  /* { dg-warning "duplicate .restrict." } */
  49
  50 typedef const CT1 CCT1;
  51 typedef const CT2 CCT2;
  52 typedef CT1 const CT1C;
  53 typedef CT2 const CT2C;
  54 typedef const int const CIC;    /* { dg-warning "duplicate .const." } */
  55 typedef volatile VT1 VVT1;
  56 typedef volatile VT2 VVT2;
  57 typedef VT1 volatile VT1V;
  58 typedef VT2 volatile VT2V;
  59 typedef volatile int volatile VIV; /* { dg-warning "duplicate .volatile." } */
  60 typedef RT1 restrict RT1R;
  61 typedef RT2 restrict RT2R;
  62 typedef restrict RT1 RRT1;
  63 typedef int *restrict restrict IRR; /* { dg-warning "duplicate .restrict." } */