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  60. Next: <a href="Supported-Languages.html#Supported-Languages" accesskey="n" rel="next">Supported Languages</a>, Previous: <a href="Show.html#Show" accesskey="p" rel="prev">Show</a>, Up: <a href="Languages.html#Languages" accesskey="u" rel="up">Languages</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="Type-and-Range-Checking"></a>
  64. <h3 class="section">15.3 Type and Range Checking</h3>
  65. <p>Some languages are designed to guard you against making seemingly common
  66. errors through a series of compile- and run-time checks. These include
  67. checking the type of arguments to functions and operators and making
  68. sure mathematical overflows are caught at run time. Checks such as
  69. these help to ensure a program&rsquo;s correctness once it has been compiled
  70. by eliminating type mismatches and providing active checks for range
  71. errors when your program is running.
  72. </p>
  73. <p>By default <small>GDB</small> checks for these errors according to the
  74. rules of the current source language. Although <small>GDB</small> does not check
  75. the statements in your program, it can check expressions entered directly
  76. into <small>GDB</small> for evaluation via the <code>print</code> command, for example.
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  78. <table class="menu" border="0" cellspacing="0">
  79. <tr><td align="left" valign="top">&bull; <a href="Type-Checking.html#Type-Checking" accesskey="1">Type Checking</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">An overview of type checking
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  81. <tr><td align="left" valign="top">&bull; <a href="Range-Checking.html#Range-Checking" accesskey="2">Range Checking</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">An overview of range checking
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