gcc/testsuite/gcc.dg/Wshadow-local-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wshadow=local" } */
   3
   4 struct Bar {
   5 };
   6
   7 struct Bar bar;       /* { dg-bogus "shadowed declaration" } */
   8
   9 int val;              /* { dg-bogus "shadowed declaration" } */
  10
  11 int func1(int x) {    /* { dg-bogus "shadowed declaration" } */
  12   int val;            /* { dg-bogus "shadows a global" } */
  13   val = x;
  14   return val;
  15 }
  16
  17 int func2(int i) {
  18   int a = 3;          /* { dg-message "shadowed declaration" } */
  19   int j;              /* { dg-message "shadowed declaration" } */
  20
  21   for (j = 0; j < i; ++j) {
  22     int a = j;        /* { dg-warning "shadows a previous local" } */
  23     int j = a + 1;    /* { dg-warning "shadows a previous local" } */
  24     func1(j);
  25   }
  26
  27   return a;
  28 }
  29
  30 int func3() {
  31   int bar;            /* { dg-bogus "shadows a global" } */
  32   float func1 = 0.3;  /* { dg-bogus "shadows a global" } */
  33
  34   if (func1 > 1)
  35     bar = 2;
  36   else
  37     bar = 1;
  38   return bar;
  39 }
  40
  41 void func4() {
  42   struct Bar bar;     /* { dg-message "shadowed declaration" } */
  43   /* { dg-bogus "shadows a global" ""  { target *-*-* } .-1 } */
  44
  45   if (val) {
  46     int bar;          /* { dg-warning "shadows a previous local" } */
  47     func1(bar);
  48   }
  49 }
  50