<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Nov 5, 2011, at 12:28 AM, Argyrios Kyrtzidis wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div>Ah ok, I didn't see your response before the changes. FWIW, my vote goes for</div><div><br></div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; min-height: 15px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; "><span style="color: rgb(151, 19, 101); ">static</span><span class="Apple-converted-space"> </span><span style="color: rgb(151, 19, 101); ">const</span><span class="Apple-converted-space"> </span><span style="color: rgb(0, 98, 68); ">Stmt</span><span class="Apple-converted-space"> </span>*LookThroughStmt(<span style="color: rgb(151, 19, 101); ">const</span><span class="Apple-converted-space"> </span><span style="color: rgb(0, 98, 68); ">Stmt</span><span class="Apple-converted-space"> </span>*S) {</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; "> <span class="Apple-converted-space"> </span><span style="color: rgb(151, 19, 101); ">if</span><span class="Apple-converted-space"> </span>(<span style="color: rgb(151, 19, 101); ">const</span><span class="Apple-converted-space"> </span><span style="color: rgb(0, 98, 68); ">Expr</span><span class="Apple-converted-space"> </span>*E = dyn_cast<<span style="color: rgb(0, 98, 68); ">Expr</span>>(S))</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; "> S = E->IgnoreParens();</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; color: rgb(0, 98, 68); "><span style="color: rgb(0, 0, 0); "> <span class="Apple-converted-space"> </span></span><span style="color: rgb(151, 19, 101); ">if</span><span style="color: rgb(0, 0, 0); "><span class="Apple-converted-space"> </span>(</span><span style="color: rgb(151, 19, 101); ">const</span><span style="color: rgb(0, 0, 0); "><span class="Apple-converted-space"> </span></span>OpaqueValueExpr<span style="color: rgb(0, 0, 0); "><span class="Apple-converted-space"> </span>*OVE = dyn_cast<</span>OpaqueValueExpr<span style="color: rgb(0, 0, 0); ">>(S))</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; "> <span class="Apple-converted-space"> </span><span style="color: rgb(151, 19, 101); ">return</span><span class="Apple-converted-space"> </span>LookThroughStmt(OVE->getSourceExpr());</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; color: rgb(151, 19, 101); "><span style="color: rgb(0, 0, 0); "> <span class="Apple-converted-space"> </span></span>return<span style="color: rgb(0, 0, 0); "><span class="Apple-converted-space"> </span>S;</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Monaco; ">}</div><br class="Apple-interchange-newline"></div></span></blockquote></div><br><div>I'm going with:</div><div><br></div><div><div>static const Stmt *LookThroughStmt(const Stmt *S) {</div><div> while (S) {</div><div> if (const Expr *Ex = dyn_cast<Expr>(S))</div><div> S = Ex->IgnoreParens(); </div><div> if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(S)) {</div><div> S = OVE->getSourceExpr();</div><div> continue;</div><div> }</div><div> break;</div><div> }</div><div> return S;</div><div>}</div></div><div><br></div><div>and doing the tail recursion manually.</div></body></html>