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/* Origin: trampoline-1.c Waldek Hebisch <hebisch@math.uni.wroc.pl> */
/* Ported to test -Wtrampolines Magnus Granberg <zorry@gentoo.org> */
/* { dg-do compile } */
/* { dg-require-effective-target trampolines } */
/* { dg-options "-O2 -Wtrampolines" } */
#ifndef NO_TRAMPOLINES
/* This used to fail on various versions of Solaris 2 because the
trampoline couldn't be made executable. */
extern void abort(void);
extern double fabs(double);
void foo (void)
{
const int correct[1100] = {1, 0, -2, 0, 1, 0, 1, -1, -10, -30, -67};
int i;
double x1 (void) {return 1; }
double x2 (void) {return -1;}
double x3 (void) {return -1;}
double x4 (void) {return 1; }
double x5 (void) {return 0; }
typedef double pfun(void);
double a (int k, pfun x1, pfun x2, pfun x3, pfun x4, pfun x5)
{
double b (void) /* { dg-warning "trampoline generated for nested function 'b'" } */
{
k = k - 1;
return a (k, b, x1, x2, x3, x4 );
}
if (k <= 0)
return x4 () + x5 ();
else
return b ();
}
for (i=0; i<=10; i++)
{
if (fabs(a( i, x1, x2, x3, x4, x5 ) - correct [i]) > 0.1)
abort();
}
}
#endif
int main (void)
{
#ifndef NO_TRAMPOLINES
foo ();
#endif
return 0;
}
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