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-rw-r--r--tests/conformance/6-ownership/drop_gc_once.zc17
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/conformance/6-ownership/drop_gc_once.zc b/tests/conformance/6-ownership/drop_gc_once.zc
new file mode 100644
index 0000000..abe1d95
--- /dev/null
+++ b/tests/conformance/6-ownership/drop_gc_once.zc
@@ -0,0 +1,17 @@
+// expect: 0 drop 7 1 1 1 0/
+// destructors 6: the collector runs an unreachable value's drop after the sweep, exactly once; later collections never run it again
+include rt;
+int n;
+word g;
+fn make() { g = drop(heap(7), fn() { n++; rt.put_s("drop "); rt.put_n(*this); rt.put_c(32); }); return 0; }
+fn main() {
+ make();
+ rt.gc(); rt.put_n(n); rt.put_c(32);
+ g = 0;
+ rt.gc(); rt.put_n(n); rt.put_c(32);
+ rt.gc(); rt.put_n(n); rt.put_c(32);
+ rt.gc(); rt.put_n(n); rt.put_c(32);
+ rt.put_n(rt.dcount); rt.put_c(10); // its entry is gone with the block
+ return 0;
+}
+// zc0: skip