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  63. <a name="Go-1"></a>
  64. <h4 class="subsection">15.4.3 Go</h4>
  65. <a name="index-Go-_0028programming-language_0029"></a>
  66. <p><small>GDB</small> can be used to debug programs written in Go and compiled with
  67. <samp>gccgo</samp> or <samp>6g</samp> compilers.
  68. </p>
  69. <p>Here is a summary of the Go-specific features and restrictions:
  70. </p>
  71. <dl compact="compact">
  72. <dd><a name="index-current-Go-package"></a>
  73. </dd>
  74. <dt><code>The current Go package</code></dt>
  75. <dd><p>The name of the current package does not need to be specified when
  76. specifying global variables and functions.
  77. </p>
  78. <p>For example, given the program:
  79. </p>
  80. <div class="example">
  81. <pre class="example">package main
  82. var myglob = &quot;Shall we?&quot;
  83. func main () {
  84. // ...
  85. }
  86. </pre></div>
  87. <p>When stopped inside <code>main</code> either of these work:
  88. </p>
  89. <div class="example">
  90. <pre class="example">(gdb) p myglob
  91. (gdb) p main.myglob
  92. </pre></div>
  93. <a name="index-builtin-Go-types"></a>
  94. </dd>
  95. <dt><code>Builtin Go types</code></dt>
  96. <dd><p>The <code>string</code> type is recognized by <small>GDB</small> and is printed
  97. as a string.
  98. </p>
  99. <a name="index-builtin-Go-functions"></a>
  100. </dd>
  101. <dt><code>Builtin Go functions</code></dt>
  102. <dd><p>The <small>GDB</small> expression parser recognizes the <code>unsafe.Sizeof</code>
  103. function and handles it internally.
  104. </p>
  105. <a name="index-restrictions-on-Go-expressions"></a>
  106. </dd>
  107. <dt><code>Restrictions on Go expressions</code></dt>
  108. <dd><p>All Go operators are supported except <code>&amp;^</code>.
  109. The Go <code>_</code> &ldquo;blank identifier&rdquo; is not supported.
  110. Automatic dereferencing of pointers is not supported.
  111. </p></dd>
  112. </dl>
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