gcc/testsuite/gcc.dg/wtr-label-1.c

   1 /* Test for -Wtraditional warnings on label conflicts with identifiers.
   2    Note, gcc should omit these warnings in system header files.
   3    Origin: Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 8/24/2000.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-Wtraditional" } */
   6
   7 enum foo1 { a };
   8 struct foo2 { int i; };
   9 union foo3 { int j; };
  10 int foo4;
  11 typedef int foo5;
  12
  13 void
  14 testfunc1 (foo6)
  15      int foo6;
  16 {
  17   int foo7;
  18
  19  foo1:
  20  foo2:
  21  foo3:
  22  foo4: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  23  foo5: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  24  foo6: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  25  foo7: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  26  testfunc1: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  27  a: /* { dg-warning "traditional C lacks" "label conflicts with identifier" } */
  28  i:
  29  j: ;
  30 }
  31
  32 # 32 "sys-header.h" 3
  33 /* We are in system headers now, no -Wtraditional warnings should issue.  */
  34
  35 void
  36 testfunc2 (foo6)
  37      int foo6;
  38 {
  39   int foo7;
  40
  41  foo1:
  42  foo2:
  43  foo3:
  44  foo4:
  45  foo5:
  46  foo6:
  47  foo7:
  48  testfunc2:
  49  a:
  50  i:
  51  j: ;
  52 }