Fix leaking arg slots on tail calls. Closes #160.
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@ -533,6 +533,7 @@ TEST_XFAILS_LLVM := $(TASK_XFAILS) \
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str-concat.rs \
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str-idx.rs \
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tag.rs \
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tail-call-arg-leak.rs \
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tail-cps.rs \
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tail-direct.rs \
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task-comm.rs \
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@ -4219,6 +4219,8 @@ let trans_visitor
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(Printf.sprintf "copy args for tail call to %s" (logname ())));
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copy_fn_args true true CLONE_none call;
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drop_slots_at_curr_stmt();
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iflog (fun _ -> annotate "drop args");
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iter_arg_slots cx (current_fn()) callee_drop_slot;
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abi.Abi.abi_emit_fn_tail_call (emitter())
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(force_sz (current_fn_callsz()))
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caller_argsz callee_code callee_argsz;
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@ -0,0 +1,11 @@
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// use of tail calls causes arg slot leaks, issue #160.
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fn inner(str dummy, bool b) {
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if (b) {
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be inner(dummy, false);
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}
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}
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fn main() {
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inner("hi", true);
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}
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