URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [g++.dg/] [opt/] [pr14029.C] - Rev 378
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// { dg-do run }
// { dg-options "-O2" }
// We used to mis-compile this testcase as we did not know that
// &a+offsetof(b,a) was the same as &a.b
struct Iterator {
int * ptr;
Iterator(int * i) : ptr(i) { }
void operator++() { ++ptr; }
int *const & base() const { return ptr; }
};
Iterator find_7(Iterator first, Iterator last)
{
int trip_count = (last.base() - first.base()) >> 1;
for ( ; trip_count > 0 ; --trip_count) {
if (*first.ptr == 7) return first;
++first;
if (*first.ptr == 7) return first;
++first;
}
switch(last.base() - first.base()) {
case 1:
if (*first.ptr == 7) return first;
++first;
case 0:
default:
return last;
}
}
int main() {
int as[5] = {4,4,4,4,7};
return (find_7(Iterator(&as[0]), Iterator(&as[5])).ptr == &as[5]);
};
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