<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - feature request: detect use of out of scope variables"
   href="https://bugs.llvm.org/show_bug.cgi?id=42262">42262</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>feature request: detect use of out of scope variables
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dcb314@hotmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>For this C code, please warn:

extern void g( char *);

void f( int n, char * p1)
{
        char * p2;

        p2 = p1;

        if (n >= 0)
        {
                char buf[ 10];

                p2 = buf;
        }
        g( p2);
}

For example. cppcheck says this:

[nov16a.cc:14] -> [nov16a.cc:12] -> [nov16a.cc:16]: (error) Using pointer to
local variable 'buf' that is out of scope.</pre>
        </div>
      </p>


      <hr>
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      <ul>
          <li>You are on the CC list for the bug.</li>
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