1 /* Origin: trampoline-1.c Waldek Hebisch <hebisch@math.uni.wroc.pl> */
2 /* Ported to test -Wtrampolines Magnus Granberg <zorry@gentoo.org> */
3
4 /* { dg-do compile } */
5 /* { dg-require-effective-target trampolines } */
6 /* { dg-options "-O2 -Wtrampolines" } */
7
8 #ifndef NO_TRAMPOLINES
9
10 /* This used to fail on various versions of Solaris 2 because the
11 trampoline couldn't be made executable. */
12
13 extern void abort(void);
14 extern double fabs(double);
15
foo(void)16 void foo (void)
17 {
18 const int correct[1100] = {1, 0, -2, 0, 1, 0, 1, -1, -10, -30, -67};
19 int i;
20
21 double x1 (void) {return 1; }
22 double x2 (void) {return -1;}
23 double x3 (void) {return -1;}
24 double x4 (void) {return 1; }
25 double x5 (void) {return 0; }
26
27 typedef double pfun(void);
28
29 double a (int k, pfun x1, pfun x2, pfun x3, pfun x4, pfun x5)
30 {
31 double b (void) /* { dg-warning "trampoline generated for nested function 'b'" } */
32 {
33 k = k - 1;
34 return a (k, b, x1, x2, x3, x4 );
35 }
36
37 if (k <= 0)
38 return x4 () + x5 ();
39 else
40 return b ();
41 }
42
43 for (i=0; i<=10; i++)
44 {
45 if (fabs(a( i, x1, x2, x3, x4, x5 ) - correct [i]) > 0.1)
46 abort();
47 }
48 }
49 #endif
50
main(void)51 int main (void)
52 {
53 #ifndef NO_TRAMPOLINES
54 foo ();
55 #endif
56 return 0;
57 }
58