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// expect: 0 1 0 1 0 1/
// spec 4.10.3: no collection runs inside an o3 region; an allocation that would collect grows the heap, and leaving the outermost region runs the pending collection once
include rt;
word sink;
int inside;
o3 int churn(int n) {
int i = 0;
while (i < n) { sink = rt.new(64); i++; }
rt.gc();
return 0;
}
int early(int base) {
o3 {
int i = 0;
while (i < 20000) { sink = rt.new(64); i++; }
rt.gc();
inside = rt.gc_runs - base;
return 0;
}
return 1;
}
fn main() {
int before = rt.gc_runs;
o3 {
int i = 0;
while (i < 20000) { sink = rt.new(64); i++; }
inside = rt.gc_runs - before;
}
rt.put_n(inside); rt.put_c(32); rt.put_n(rt.gc_runs - before); rt.put_c(32);
before = rt.gc_runs;
churn(20000);
rt.put_n(0); rt.put_c(32); rt.put_n(rt.gc_runs - before); rt.put_c(32);
before = rt.gc_runs;
early(before);
rt.put_n(inside); rt.put_c(32); rt.put_n(rt.gc_runs - before);
rt.put_c(10);
return 0;
}
// zc0: skip
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