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// RUN: %boogie -noVerify %s > %t
// RUN: %diff %s.expect %t
procedure P0()
{
// these labels don't exist at all
goto X; // error: undefined label
goto Y; // error: undefined label
}
procedure P1(y: int)
{
goto X;
while (y < 100)
{
X:
}
Q:
if (y == 102) {
A:
goto Q;
} else if (y == 104) {
B:
} else {
C:
goto K;
}
while (y < 1000)
{
K:
goto A;
if (y mod 2 == 0) {
goto L;
M:
}
goto K, L;
L:
if (*) {
goto M;
}
}
goto B;
}
procedure Break(n: int)
{
break; // error: break not inside a loop
if (*) {
break; // error: label-less break not inside a loop
}
A:
if (*) {
break A; // this is fine, since the break statement uses a label
}
B:
assert 2 <= n;
while (*) {
break B; // error: B does not label a loop
break;
C: while (*) { assert n < 100; }
break A; // error: A does not label a loop
break C; // error: A does not label an enclosing loop
F: break F; // error: F does not label an enclosing loop
}
D:
while (*) {
E:
while (*) {
if (*) {
break;
} else if (*) {
if (*) { break E; }
} else {
break D;
}
}
}
}
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