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  16. <title>Errors (Debugging with GDB)</title>
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  60. Next: <a href="Invalidation.html#Invalidation" accesskey="n" rel="next">Invalidation</a>, Previous: <a href="Prompting.html#Prompting" accesskey="p" rel="prev">Prompting</a>, Up: <a href="Annotations.html#Annotations" accesskey="u" rel="up">Annotations</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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  63. <a name="Errors-1"></a>
  64. <h3 class="section">28.4 Errors</h3>
  65. <a name="index-annotations-for-errors_002c-warnings-and-interrupts"></a>
  66. <a name="index-quit-annotation"></a>
  67. <div class="smallexample">
  68. <pre class="smallexample">^Z^Zquit
  69. </pre></div>
  70. <p>This annotation occurs right before <small>GDB</small> responds to an interrupt.
  71. </p>
  72. <a name="index-error-annotation"></a>
  73. <div class="smallexample">
  74. <pre class="smallexample">^Z^Zerror
  75. </pre></div>
  76. <p>This annotation occurs right before <small>GDB</small> responds to an error.
  77. </p>
  78. <p>Quit and error annotations indicate that any annotations which <small>GDB</small> was
  79. in the middle of may end abruptly. For example, if a
  80. <code>value-history-begin</code> annotation is followed by a <code>error</code>, one
  81. cannot expect to receive the matching <code>value-history-end</code>. One
  82. cannot expect not to receive it either, however; an error annotation
  83. does not necessarily mean that <small>GDB</small> is immediately returning all the way
  84. to the top level.
  85. </p>
  86. <a name="index-error_002dbegin-annotation"></a>
  87. <p>A quit or error annotation may be preceded by
  88. </p>
  89. <div class="smallexample">
  90. <pre class="smallexample">^Z^Zerror-begin
  91. </pre></div>
  92. <p>Any output between that and the quit or error annotation is the error
  93. message.
  94. </p>
  95. <p>Warning messages are not yet annotated.
  96. </p>
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