<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">While I doubt that - in practice - a compiler would generate incorrect code in this case, I agree that it's a possibility unless we compile with "-fno-strict-aliasing". But I don't want to do that, because it could make the whole of the code less efficient. (And changing the Makefiles to compile only this one file - "MatroskaFileParser.cpp" - with that flag would be messy.)<div><br></div><div>However, reading through some of the comments at the bottom of <<a href="http://labs.qt.nokia.com/2011/06/10/type-punning-and-strict-aliasing/">http://labs.qt.nokia.com/2011/06/10/type-punning-and-strict-aliasing/</a>>, it's noted that one can get around strict aliasing restrictions by using "memcpy()". So, with this in mind, try the following alternative implementation of "MatroskaFileParser::parseEBMLVal_float()", and let us know if it makes your compiler happy:</div><div><br></div><div><br></div><div><div>Boolean MatroskaFileParser::parseEBMLVal_float(EBMLDataSize& size, float& result) {</div><div> unsigned resultAsUnsigned;</div><div> if (!parseEBMLVal_unsigned(size, resultAsUnsigned)) return False;</div><div><br></div><div> if (sizeof result != sizeof resultAsUnsigned) return False;</div><div> memcpy(&result, &resultAsUnsigned, sizeof result);</div><div> return True;</div><div>}</div></div><br><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); 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; ">Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/">http://www.live555.com/</a></span></span>
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