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POGetFileAttributesExW() or FileTimeToSystemTime() doesn't work in Release, when works in Debug
 

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  1. POGetFileAttributesExW() or FileTimeToSystemTime() doesn't work in Release, when works in Debug
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    <p>I use <code>GetFileAttributesExW()</code> to get the date for file. In <strong>DEBUG</strong> mode (Visual Studio 2012), everything works fine, I get e.g. <em>"2013-05-10"</em>. But when I change target to <strong>RELEASE</strong>, the date is <strong>corrupted</strong> (I get at the end of my function the string e.g. <em>"1678-09-08"</em>).</p> <p>The full code:</p> <pre><code>bool Registry::fileDate(std::wstring pathString, std::string &amp;dateOut) { if (pathString.size() == 0) return false; if (pathString[0] == '\"') { pathString = pathString.erase(0, 1); } if (pathString[pathString.size()-1] == '\"') { pathString = pathString.erase(pathString.size()-1, 1); } size_t pos = 0; size_t found = pathString.find('\"', pos); if (found &gt; 0 &amp;&amp; found != std::string::npos) { pathString = pathString.substr(0, found); } std::wstring filePath = pathString; WIN32_FILE_ATTRIBUTE_DATA fileData; GetFileAttributesExW(filePath.c_str(), GetFileExInfoStandard, &amp;fileData); SYSTEMTIME systemTime; bool res = FileTimeToSystemTime(&amp;fileData.ftCreationTime, &amp;systemTime); if (res) { char buf[40] = {0}; for(int i=0; i&lt;40; i++) //to be even more certain that no trash will get here buf[i] = ' '; sprintf(buf,"%04d-%02d-%02d", systemTime.wYear, systemTime.wMonth, systemTime.wDay); dateOut = buf+'\0'; } else { //show error's window, i'm sure it DOESN'T occur, both in DEBUG and RELEASE } } </code></pre> <p>I'm aware that in <strong>RELEASE</strong> some optimizations have to be done. That optimizations and my mistake (which I cannot see) together must result in corrupted date.</p> <p>To the function go strings like:</p> <pre><code>L"\"C:\\Program Files\\File\\setup.exe\" /uninstall PROPLUS /dll OSETUP.DLL" </code></pre> <p>Which in <strong>DEBUG</strong>, are converted in first lines of my function to:</p> <pre><code>L"C:\\Program Files\\File\\setup.exe" </code></pre> <p><strong>Edit:</strong> (Thx to Raymond Chen's comment)</p> <p>Now I know that in RELEASE, <code>GetFileAttributesExW()</code> returns <strong>FALSE</strong>, so maybe somehow that part works in <strong>DEBUG</strong> and doesn't work in <strong>RELEASE</strong> (it should get rid of extra <em>"</em> and <em>/params</em> from path):</p> <pre><code>if(pathString.size() == 0) return false; if(pathString[0] == '\"'){ pathString = pathString.erase(0, 1); } if(pathString[pathString.size()-1] == '\"'){ pathString = pathString.erase(pathString.size()-1, 1); } size_t pos = 0; size_t found = pathString.find('\"', pos); if (found &gt; 0 &amp;&amp; found != std::string::npos) { pathString = pathString.substr(0, found); } std::wstring filePath = pathString; </code></pre>
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    1. COTry using TCHAR instead of the char. It is possible that the RELEASE mode in Unicode and DEBUG mode is not.
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      1. POGetFileAttributesExW() or FileTimeToSystemTime() doesn't work in Release, when works in Debug
      1. USPai
    2. COI tried it, and also checked that both RELEASE and DEBUG have Unicode set. When I put "systemTime.wYear = 1410;" before sprintf, it produces the "1410-09-08" date.
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      1. POGetFileAttributesExW() or FileTimeToSystemTime() doesn't work in Release, when works in Debug
      1. USPolGraphic
    3. COWhat is `dateOut`? If it is a `char*` then you are using memory (`buf`) after it is freed. You also did not check the return value of `GetFileAttributesExW`. Perhaps the `filePath` is not valid in RELEASE mode. Step through the code checking all variables after each line and checking all return values.
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      1. POGetFileAttributesExW() or FileTimeToSystemTime() doesn't work in Release, when works in Debug
      1. USRaymond Chen
 

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