<div dir="ltr">In C++, one common way to do this is to just omit the parameter name (or leave it in, but surrounded by a C-style comment).<div><br></div><div>E.g.</div><div><br></div><div><div>void SourceCoverageViewText::renderLineSuffix(raw_ostream &/*OS*/,</div><div>                                              unsigned /*ViewDepth*/) {</div></div><div><br></div><div>-- Sean Silva</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 29, 2016 at 9:56 AM, Vedant Kumar via llvm-commits <span dir="ltr"><<a href="mailto:llvm-commits@lists.llvm.org" target="_blank">llvm-commits@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: vedantk<br>
Date: Wed Jun 29 11:56:46 2016<br>
New Revision: 274139<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=274139&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=274139&view=rev</a><br>
Log:<br>
Use LLVM_ATTRIBUTE_UNUSED instead of void casts; NFC<br>
<br>
Modified:<br>
    llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp<br>
<br>
Modified: llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp?rev=274139&r1=274138&r2=274139&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp?rev=274139&r1=274138&r2=274139&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp (original)<br>
+++ llvm/trunk/tools/llvm-cov/SourceCoverageViewText.cpp Wed Jun 29 11:56:46 2016<br>
@@ -59,9 +59,11 @@ unsigned getDividerWidth(const CoverageV<br>
<br>
 } // anonymous namespace<br>
<br>
-void SourceCoverageViewText::renderViewHeader(raw_ostream &OS) { (void)OS; }<br>
+void SourceCoverageViewText::renderViewHeader(<br>
+    raw_ostream &OS LLVM_ATTRIBUTE_UNUSED) {}<br>
<br>
-void SourceCoverageViewText::renderViewFooter(raw_ostream &OS) { (void)OS; }<br>
+void SourceCoverageViewText::renderViewFooter(<br>
+    raw_ostream &OS LLVM_ATTRIBUTE_UNUSED) {}<br>
<br>
 void SourceCoverageViewText::renderSourceName(raw_ostream &OS) {<br>
   getOptions().colored_ostream(OS, raw_ostream::CYAN) << getSourceName()<br>
@@ -74,11 +76,9 @@ void SourceCoverageViewText::renderLineP<br>
     OS << "  |";<br>
 }<br>
<br>
-void SourceCoverageViewText::renderLineSuffix(raw_ostream &OS,<br>
-                                              unsigned ViewDepth) {<br>
-  (void)OS;<br>
-  (void)ViewDepth;<br>
-}<br>
+void SourceCoverageViewText::renderLineSuffix(<br>
+    raw_ostream &OS LLVM_ATTRIBUTE_UNUSED,<br>
+    unsigned ViewDepth LLVM_ATTRIBUTE_UNUSED) {}<br>
<br>
 void SourceCoverageViewText::renderViewDivider(raw_ostream &OS,<br>
                                                unsigned ViewDepth) {<br>
<br>
<br>
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</blockquote></div><br></div>