You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

2 lines
21 KiB

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Pulselib__PulseOperations (infer.Pulselib__PulseOperations)</title><link rel="stylesheet" href="../../odoc.css"/><meta charset="utf-8"/><meta name="generator" content="odoc 1.5.0"/><meta name="viewport" content="width=device-width,initial-scale=1.0"/><script src="../../highlight.pack.js"></script><script>hljs.initHighlightingOnLoad();</script></head><body><div class="content"><header><nav><a href="../index.html">Up</a> <a href="../index.html">infer</a> &#x00BB; Pulselib__PulseOperations</nav><h1>Module <code>Pulselib__PulseOperations</code></h1></header><dl><dt class="spec type" id="type-t"><a href="#type-t" class="anchor"></a><code><span class="keyword">type</span> t</code><code> = <a href="../Pulselib/PulseAbductiveDomain/index.html#type-t">Pulselib.PulseDomainInterface.AbductiveDomain.t</a></code></dt><dt class="spec type" id="type-access_result"><a href="#type-access_result" class="anchor"></a><code><span class="keyword">type</span> <span>'a access_result</span></code><code> = <span><span>(<span class="type-var">'a</span>, <a href="../Pulselib/PulseDiagnostic/index.html#type-t">Pulselib.PulseBasicInterface.Diagnostic.t</a> * <a href="index.html#type-t">t</a>)</span> <a href="../IStdlib/index.html#module-IStd">IStdlib.IStd</a>.result</span></code></dt></dl><dl><dt class="spec value" id="val-ok_continue"><a href="#val-ok_continue" class="anchor"></a><code><span class="keyword">val</span> ok_continue : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<span><a href="../Pulselib/PulseExecutionDomain/index.html#type-t">Pulselib.PulseDomainInterface.ExecutionDomain.t</a> list</span>, <span class="type-var">'a</span>)</span> <a href="../IStdlib/index.html#module-IStd">IStdlib.IStd</a>.result</span></code></dt><dt class="spec value" id="val-check_addr_access"><a href="#val-check_addr_access" class="anchor"></a><code><span class="keyword">val</span> check_addr_access : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>Check that the <code>address</code> is not known to be invalid</p></dd></dl><div class="spec module" id="module-Closures"><a href="#module-Closures" class="anchor"></a><code><span class="keyword">module</span> <a href="Closures/index.html">Closures</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><dl><dt class="spec value" id="val-eval"><a href="#val-eval" class="anchor"></a><code><span class="keyword">val</span> eval : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../IR/Exp/index.html#type-t">IR.Exp.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="index.html#type-t">t</a> * <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span>)</span> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>Use the stack and heap to evaluate the given expression down to an abstract address representing its value.</p><p>Return an error state if it traverses some known invalid address or if the end destination is known to be invalid.</p></dd></dl><dl><dt class="spec value" id="val-prune"><a href="#val-prune" class="anchor"></a><code><span class="keyword">val</span> prune : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>condition:<a href="../IR/Exp/index.html#type-t">IR.Exp.t</a></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dt class="spec value" id="val-eval_deref"><a href="#val-eval_deref" class="anchor"></a><code><span class="keyword">val</span> eval_deref : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../IR/Exp/index.html#type-t">IR.Exp.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="index.html#type-t">t</a> * <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span>)</span> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>Like <code>eval</code> but evaluates <code>*exp</code>.</p></dd></dl><dl><dt class="spec value" id="val-eval_access"><a href="#val-eval_access" class="anchor"></a><code><span class="keyword">val</span> eval_access : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="../Pulselib__PulseBaseMemory/index.html#module-Access">Pulselib.PulseDomainInterface.BaseMemory.Access</a>.t <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="index.html#type-t">t</a> * <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span>)</span> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>Like <code>eval</code> but starts from an address instead of an expression, checks that it is valid, and if so dereferences it according to the access.</p></dd></dl><dl><dt class="spec value" id="val-havoc_id"><a href="#val-havoc_id" class="anchor"></a><code><span class="keyword">val</span> havoc_id : <a href="../IR/Ident/index.html#type-t">IR.Ident.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-havoc_field"><a href="#val-havoc_field" class="anchor"></a><code><span class="keyword">val</span> havoc_field : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="../IR/Fieldname/index.html#type-t">IR.Fieldname.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dt class="spec value" id="val-realloc_pvar"><a href="#val-realloc_pvar" class="anchor"></a><code><span class="keyword">val</span> realloc_pvar : <a href="../IR/Pvar/index.html#type-t">IR.Pvar.t</a> <span>&#45;&gt;</span> <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-write_id"><a href="#val-write_id" class="anchor"></a><code><span class="keyword">val</span> write_id : <a href="../IR/Ident/index.html#type-t">IR.Ident.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-write_field"><a href="#val-write_field" class="anchor"></a><code><span class="keyword">val</span> write_field : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>ref:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <a href="../IR/Fieldname/index.html#type-t">IR.Fieldname.t</a> <span>&#45;&gt;</span> <span>obj:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>write the edge <code>ref --.field--&gt; obj</code></p></dd></dl><dl><dt class="spec value" id="val-write_arr_index"><a href="#val-write_arr_index" class="anchor"></a><code><span class="keyword">val</span> write_arr_index : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>ref:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <span>index:<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a></span> <span>&#45;&gt;</span> <span>obj:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>write the edge <code>ref[index]--&gt; obj</code></p></dd></dl><dl><dt class="spec value" id="val-write_deref"><a href="#val-write_deref" class="anchor"></a><code><span class="keyword">val</span> write_deref : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>ref:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <span>obj:<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>write the edge <code>ref --*--&gt; obj</code></p></dd></dl><dl><dt class="spec value" id="val-invalidate"><a href="#val-invalidate" class="anchor"></a><code><span class="keyword">val</span> invalidate : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseInvalidation/index.html#type-t">Pulselib.PulseBasicInterface.Invalidation.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>record that the address is invalid</p></dd></dl><dl><dt class="spec value" id="val-allocate"><a href="#val-allocate" class="anchor"></a><code><span class="keyword">val</span> allocate : <a href="../IR/Procname/index.html#type-t">IR.Procname.t</a> <span>&#45;&gt;</span> <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-remove_allocation_attr"><a href="#val-remove_allocation_attr" class="anchor"></a><code><span class="keyword">val</span> remove_allocation_attr : <a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-invalidate_access"><a href="#val-invalidate_access" class="anchor"></a><code><span class="keyword">val</span> invalidate_access : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseInvalidation/index.html#type-t">Pulselib.PulseBasicInterface.Invalidation.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="../Pulselib__PulseBaseMemory/index.html#module-Access">Pulselib.PulseDomainInterface.BaseMemory.Access</a>.t <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>record that what the address points via the access to is invalid</p></dd></dl><dl><dt class="spec value" id="val-invalidate_array_elements"><a href="#val-invalidate_array_elements" class="anchor"></a><code><span class="keyword">val</span> invalidate_array_elements : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseInvalidation/index.html#type-t">Pulselib.PulseBasicInterface.Invalidation.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>record that all the array elements that address points to is invalid</p></dd></dl><dl><dt class="spec value" id="val-shallow_copy"><a href="#val-shallow_copy" class="anchor"></a><code><span class="keyword">val</span> shallow_copy : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="index.html#type-t">t</a> * <span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span>)</span> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>returns the address of a new cell with the same edges as the original</p></dd></dl><dl><dt class="spec value" id="val-remove_vars"><a href="#val-remove_vars" class="anchor"></a><code><span class="keyword">val</span> remove_vars : <span><a href="../IR/Var/index.html#type-t">IR.Var.t</a> list</span> <span>&#45;&gt;</span> <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dt class="spec value" id="val-check_address_escape"><a href="#val-check_address_escape" class="anchor"></a><code><span class="keyword">val</span> check_address_escape : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../IR/Procdesc/index.html#type-t">IR.Procdesc.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> <a href="index.html#type-access_result">access_result</a></span></code></dt><dt class="spec value" id="val-call"><a href="#val-call" class="anchor"></a><code><span class="keyword">val</span> call : <span>callee_data:<span><span>(<a href="../IR/Procdesc/index.html#type-t">IR.Procdesc.t</a> * <a href="../Pulselib/PulseSummary/index.html#type-t">Pulselib.PulseSummary.t</a>)</span> option</span></span> <span>&#45;&gt;</span> <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../IR/Procname/index.html#type-t">IR.Procname.t</a> <span>&#45;&gt;</span> <span>ret:<span>(<a href="../IR/Ident/index.html#type-t">IR.Ident.t</a> * <a href="../IR/Typ/index.html#type-t">IR.Typ.t</a>)</span></span> <span>&#45;&gt;</span> <span>actuals:<span><span>(<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> * <a href="../IR/Typ/index.html#type-t">IR.Typ.t</a>)</span> list</span></span> <span>&#45;&gt;</span> <span>formals_opt:<span><span><span>(<a href="../IR/Pvar/index.html#type-t">IR.Pvar.t</a> * <a href="../IR/Typ/index.html#type-t">IR.Typ.t</a>)</span> list</span> option</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span><a href="../Pulselib/PulseExecutionDomain/index.html#type-t">Pulselib.PulseDomainInterface.ExecutionDomain.t</a> list</span> <a href="index.html#type-access_result">access_result</a></span></code></dt><dd><p>perform an interprocedural call: apply the summary for the call proc name passed as argument if it exists</p></dd></dl><dl><dt class="spec value" id="val-unknown_call"><a href="#val-unknown_call" class="anchor"></a><code><span class="keyword">val</span> unknown_call : <a href="../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> <a href="../Pulselib/PulseCallEvent/index.html#type-t">Pulselib.PulseBasicInterface.CallEvent.t</a> <span>&#45;&gt;</span> <span>ret:<span>(<a href="../IR/Ident/index.html#type-t">IR.Ident.t</a> * <span class="type-var">'a</span>)</span></span> <span>&#45;&gt;</span> <span>actuals:<span><span>(<span>(<a href="../Pulselib/PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a> * <a href="../Pulselib/PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> * <a href="../IR/Typ/index.html#type-t">IR.Typ.t</a>)</span> list</span></span> <span>&#45;&gt;</span> <span>formals_opt:<span><span><span>(<a href="../IR/Pvar/index.html#type-t">IR.Pvar.t</a> * <a href="../IR/Typ/index.html#type-t">IR.Typ.t</a>)</span> list</span> option</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dd><p>performs a call to a function with no summary by optimistically havoc'ing the by-ref actuals and the return value as appropriate</p></dd></dl></div></body></html>