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<title>avram - a virtual machine code interpreter: 1.6.4 File Format Errors</title>

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<a name="File-Format-Errors"></a>
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<td valign="middle" align="left">[<a href="Application-Programming-Errors.html#Application-Programming-Errors" title="Next section in reading order"> &gt; </a>]</td>
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<td valign="middle" align="left">[<a href="User-Manual.html#User-Manual" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
<td valign="middle" align="left">[<a href="Diagnostics.html#Diagnostics" title="Up section"> Up </a>]</td>
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<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left">[<a href="avram.html#Top" title="Cover (top) of document">Top</a>]</td>
<td valign="middle" align="left">[<a href="avram_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
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<hr size="1">
<a name="File-Format-Errors-1"></a>
<h3 class="subsection">1.6.4 File Format Errors</h3>
<p>Certain application crashes result from an application not adhering
to the required conventions about data and file formats, or because the
application was invoked in the wrong mode (<a href="Modes-of-Operation.html#Modes-of-Operation">Modes of Operation</a>). These
are the following.
</p>
<dl compact="compact">
<dt> <code><var>application-name</var>: invalid text format (code <var>nn</var>)</code></dt>
<dd><a name="index-invalid-text-format"></a>
<p>An application that was expected to return a string of characters to
be written to a text file returned data that did not correspond to any
valid character representation.
</p></dd>
<dt> <code><var>application-name</var>: null character in prompt</code></dt>
<dd><p>An interactive application (invoked rightly or wrongly with &lsquo;<samp>-i</samp>&rsquo;,
&lsquo;<samp>-t</samp>&rsquo;, or &lsquo;<samp>-s</samp>&rsquo;) is required to exchange strings of non-null
characters internally with <code>avram</code>, and used a null.
</p></dd>
<dt> <code><var>application-name</var>: invalid file name (code <var>nn</var>)</code></dt>
<dd><p>The data structure representing a file obtained from an application
has a name consisting of something other than character strings. This
error could be the result of a filter mode application (<a href="Filter-Mode.html#Filter-Mode">Filter Mode</a>) being invoked in parameter mode.
<br>
(<a href="Parameter-Mode.html#Parameter-Mode">Parameter Mode</a>)
</p></dd>
<dt> <code><var>application-name</var>: null character in file name</code></dt>
<dd><a name="index-null-character-in-file-name"></a>
<p>Similar to the above errors.
</p></dd>
<dt> <code><var>application-name</var>: bad character in file name</code></dt>
<dd><a name="index-bad-character-in-file-name"></a>
<p>Slashes, backslashes, and unprintable characters other than spaces are
also prohibited in file names.
</p></dd>
<dt> <code><var>application-name</var>: invalid output preamble format</code></dt>
<dd><a name="index-invalid-output-preamble-format"></a>
<p>According the format used by <code>avram</code> for data files, a data file
may contain an optional text portion, known as the preamble. This
error occurs when a data file obtained from an application can not be
written because the preamble is something other than a list of
character strings.
</p></dd>
<dt> <code><var>application-name</var>: invalid file specification</code></dt>
<dd><a name="index-invalid-file-specification"></a>
<p>This error occurs in situations where the data structure for a file
obtained by evaluating the application is too broken to permit any
more specific diagnosis.
</p></dd>
<dt> <code>avram: invalid raw file format in <var>application-name</var></code></dt>
<dd><a name="index-invalid-raw-file-format"></a>
<p>The file containing the virtual machine code was not able to be
loaded, because the code was not in a recognizable format. Either the
file has become corrupted, the compiler that generated it has a
bug in it, or the wrong file was used as a virtual code file.
</p></dd>
</dl>

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<table cellpadding="1" cellspacing="1" border="0">
<tr><td valign="middle" align="left">[<a href="Overflow-Errors.html#Overflow-Errors" title="Previous section in reading order"> &lt; </a>]</td>
<td valign="middle" align="left">[<a href="Application-Programming-Errors.html#Application-Programming-Errors" title="Next section in reading order"> &gt; </a>]</td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left">[<a href="User-Manual.html#User-Manual" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
<td valign="middle" align="left">[<a href="Diagnostics.html#Diagnostics" title="Up section"> Up </a>]</td>
<td valign="middle" align="left">[<a href="Virtual-Machine-Specification.html#Virtual-Machine-Specification" title="Next chapter"> &gt;&gt; </a>]</td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left">[<a href="avram.html#Top" title="Cover (top) of document">Top</a>]</td>
<td valign="middle" align="left">[<a href="avram_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
<td valign="middle" align="left">[<a href="Function-Index.html#Function-Index" title="Index">Index</a>]</td>
<td valign="middle" align="left">[<a href="avram_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
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