/* { dg-do compile } */ /* { dg-require-effective-target alloca } */ /* { dg-options "-Walloca-larger-than=2000 -O2" } */ void f (void *); void g1 (int n) { void *p; if (n > 0 && n < 2000) // FIXME: This is a bogus warning, and is currently happening on // 32-bit targets because VRP is not giving us any range info for // the argument to __builtin_alloca. This should be fixed by the // upcoming range work. p = __builtin_alloca (n); // { dg-bogus "unbounded use of 'alloca'" "" { xfail { ! lp64 } } } else p = __builtin_malloc (n); f (p); } void g2 (int n) { void *p; if (n < 2000) p = __builtin_alloca (n); // { dg-warning "large due to conversion" } else p = __builtin_malloc (n); f (p); } void g3 (int n) { void *p; if (n > 0 && n < 3000) { p = __builtin_alloca (n); // { dg-warning "'alloca' may be too large" "" { target lp64} } // { dg-message "note:.*argument may be as large as 2999" "note" { target lp64 } .-1 } // { dg-warning "unbounded use of 'alloca'" "" { target { ! lp64 } } .-2 } } else p = __builtin_malloc (n); f (p); }