diff options
Diffstat (limited to 'tests/conformance/6-ownership/drop_reused_address.zc')
| -rw-r--r-- | tests/conformance/6-ownership/drop_reused_address.zc | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/conformance/6-ownership/drop_reused_address.zc b/tests/conformance/6-ownership/drop_reused_address.zc new file mode 100644 index 0000000..97ef21d --- /dev/null +++ b/tests/conformance/6-ownership/drop_reused_address.zc @@ -0,0 +1,22 @@ +// expect: drop 1 same 1 1 0/ +// destructors 9: a freed block's drop and its bits are cleared, so a block reused at the same address runs no old drop +include rt; +int n, first; +int addr(int* p) { return p as int; } +int clean(int* p) { unbounded { return (p[-4] & (rt.F_HASDROP | rt.F_DROPPED)) == 0; } } +// the drop is set in a helper, so main has no closure and its locals take no cells from the heap +int* .u armed() { int* p = rt.new(int); p.drop = fn() { n++; rt.put_s("drop "); }; return p; } +fn main() { + { int* p = armed(); *p = 1; first = addr(p); } + rt.put_n(n); rt.put_c(32); + { + int* q = rt.new(int); *q = 2; + if (addr(q) == first) rt.put_s("same "); else rt.put_s("moved "); + rt.put_n(clean(q)); rt.put_c(32); + } + rt.put_n(n); rt.put_c(32); + rt.put_n(rt.dcount); + rt.put_c(10); + return 0; +} +// zc0: skip |