rust/src/test/run-pass/extern-call-deep2.rs

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extern mod rustrt {
fn rust_dbg_call(cb: *u8,
data: libc::uintptr_t) -> libc::uintptr_t;
}
2012-07-03 18:32:02 -05:00
extern fn cb(data: libc::uintptr_t) -> libc::uintptr_t {
if data == 1u {
data
} else {
count(data - 1u) + 1u
}
}
fn count(n: uint) -> uint {
debug!{"n = %?", n};
rustrt::rust_dbg_call(cb, n)
}
fn main() {
// Make sure we're on a task with small Rust stacks (main currently
// has a large stack)
do task::spawn {
let result = count(1000u);
debug!{"result = %?", result};
assert result == 1000u;
};
}