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/* PR middle-end/103597 */
/* { dg-do compile } */
/* { dg-options "-Wimplicit-fallthrough" } */
#define E(c, e) if (c) e
int
fn0 (int n)
{
switch (n)
{
case 0:
E (1, return 0);
case 1:
return -1;
}
return 0;
}
int
fn1 (int n)
{
switch (n)
{
case 0:
E (1, goto out);
case 1:
return -1;
}
out:
return 0;
}
int
fn2 (int n)
{
switch (n)
{
case 0:
if (1)
n++; /* { dg-warning "statement may fall through" } */
case 1: /* { dg-message "here" } */
return -1;
}
return 0;
}
int
fn3 (int n)
{
switch (n)
{
case 0:
if (0) /* { dg-warning "statement may fall through" } */
return 0;
case 1: /* { dg-message "here" } */
return -1;
}
return 0;
}
int
fn4 (int n)
{
switch (n)
{
case 0:
E (0, n++);
--n; /* { dg-warning "statement may fall through" } */
case 1: /* { dg-message "here" } */
return -1;
}
return 0;
}
int
fn5 (int n)
{
switch (n)
{
case 0:
if (1)
return 0;
else
return -1;
case 1:
return -1;
}
return 0;
}
int
fn6 (int n)
{
switch (n)
{
case 0:
if (1)
return 0;
else
{
meow:
n--; /* { dg-warning "statement may fall through" } */
}
case 1: /* { dg-message "here" } */
return -1;
case 2:
goto meow;
}
return 0;
}
int
fn7 (int n)
{
switch (n)
{
case 0:
if (1)
return 0;
woof:
case 1:
return -1;
}
return 0;
}
int
fn8 (int n)
{
switch (n)
{
case 0:
if (1) n++; /* { dg-warning "statement may fall through" } */
woof: /* { dg-message "here" } */
case 1:
return -1;
}
return 0;
}
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