14303bad89
This can trigger a crash because we assume we can supply null ptrs and undefined values for values of those types, as we should be treated them as zero-size. Interestingly, this crash only shows up (atm) in non-optimized builds. Therefore, I added a -Z no-opt flag so that the new test (capture_nil) can specify that it should not run with optimizations enabled.
30 lines
720 B
Rust
30 lines
720 B
Rust
// compile-flags:-Z no-opt
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use comm::*;
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// This test has to be setup just so to trigger
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// the condition which was causing us a crash.
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// The situation is that we are capturing a
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// () value by ref. We generally feel free,
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// however, to substitute NULL pointers and
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// undefined values for values of () type, and
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// so this caused a segfault when we copied into
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// the closure.
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//
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// The fix is just to not emit any actual loads
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// or stores for copies of () type (which is of
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// course preferable, as the value itself is
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// irrelevant).
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fn foo(&&x: ()) -> Port<()> {
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let p = Port();
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let c = Chan(p);
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do task::spawn() |copy c, copy x| {
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c.send(x);
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}
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p
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}
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fn main() {
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foo(()).recv()
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}
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