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/* Check for various valid and erroneous "noreturn" cases. */

/* { dg-do compile } */

/* { dg-options "-O2 -Wmissing-noreturn" } */

extern void exit (int);

extern void foo1(void) __attribute__ ((__noreturn__));

void

foo1(void)

{

} /* { dg-warning "'noreturn' function does return" "detect falling off end of noreturn" } */

extern void foo2(void) __attribute__ ((__noreturn__));

void

foo2(void)

{

  exit(0);

} /* { dg-bogus "warning:" "this function should not get any warnings" } */

extern void foo3(void);

void

foo3(void)

{

} /* { dg-bogus "warning:" "this function should not get any warnings" } */

extern void foo4(void);

void

foo4(void) /* { dg-warning "candidate for attribute 'noreturn'" "detect noreturn candidate" } */

{

  exit(0);

}

extern void foo5(void) __attribute__ ((__noreturn__));

void

foo5(void)

{

  return; /* { dg-warning "'noreturn' has a 'return' statement" "detect invalid return" } */

} /* { dg-warning "function does return" "detect return from noreturn" } */

extern void foo6(void);

void

foo6(void)

{

  return;

} /* { dg-bogus "warning:" "this function should not get any warnings" } */

extern void foo7(void);

void

foo7(void)

{

  foo6();

} /* { dg-bogus "warning:" "this function should not get any warnings" } */

extern void foo8(void) __attribute__ ((__noreturn__));

void

foo8(void)

{

  foo7();

} /* { dg-warning "'noreturn' function does return" "detect return from tail call" } */