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struct st
{
int a, b, c, d, e;
};
int
test_1 (int flag, struct st *p)
{
struct st *q;
int result = 0;
if (flag)
q = p;
/* We should only warn about the first use of uninit for 'q': */
result += q->a; /* { dg-warning "use of uninitialized value 'q'" } */
/* ...and not for these: */
result += q->b; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->c; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->d; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->e; /* { dg-bogus "use of uninitialized value 'q'" } */
return result;
}
int
test_2 (int flag, struct st *p, struct st *r)
{
struct st *q;
int result = 0;
if (flag)
q = p;
/* We should only warn about the first use of uninit for 'q': */
if (q == r) /* { dg-warning "use of uninitialized value 'q'" } */
result += 1;
/* ...and not for these, after a conditional: */
result += q->b; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->c; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->d; /* { dg-bogus "use of uninitialized value 'q'" } */
result += q->e; /* { dg-bogus "use of uninitialized value 'q'" } */
return result;
}
int
test_3 (int flag, int val)
{
int result = 0;
int idx;
if (flag)
idx = val;
switch (idx) /* { dg-warning "use of uninitialized value 'idx'" } */
{
case 0:
result = 3;
break;
case 1:
result = 4;
break;
default:
result = 5;
break;
}
switch (idx) /* { dg-bogus "use of uninitialized value 'idx'" } */
{
case 0:
result += 3;
break;
case 1:
result += 4;
break;
default:
result += 5;
break;
}
return result;
}
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