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17<title>Debugging with GDB: Go</title>
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70<a name="Go-1"></a>
71<h4 class="subsection">15.4.3 Go</h4>
72
73<a name="index-Go-_0028programming-language_0029"></a>
74<p><small>GDB</small> can be used to debug programs written in Go and compiled with
75<samp>gccgo</samp> or <samp>6g</samp> compilers.
76</p>
77<p>Here is a summary of the Go-specific features and restrictions:
78</p>
79<dl compact="compact">
80<dd><a name="index-current-Go-package"></a>
81</dd>
82<dt><code>The current Go package</code></dt>
83<dd><p>The name of the current package does not need to be specified when
84specifying global variables and functions.
85</p>
86<p>For example, given the program:
87</p>
88<div class="example">
89<pre class="example">package main
90var myglob = &quot;Shall we?&quot;
91func main () {
92  // ...
93}
94</pre></div>
95
96<p>When stopped inside <code>main</code> either of these work:
97</p>
98<div class="example">
99<pre class="example">(gdb) p myglob
100(gdb) p main.myglob
101</pre></div>
102
103<a name="index-builtin-Go-types"></a>
104</dd>
105<dt><code>Builtin Go types</code></dt>
106<dd><p>The <code>string</code> type is recognized by <small>GDB</small> and is printed
107as a string.
108</p>
109<a name="index-builtin-Go-functions"></a>
110</dd>
111<dt><code>Builtin Go functions</code></dt>
112<dd><p>The <small>GDB</small> expression parser recognizes the <code>unsafe.Sizeof</code>
113function and handles it internally.
114</p>
115<a name="index-restrictions-on-Go-expressions"></a>
116</dd>
117<dt><code>Restrictions on Go expressions</code></dt>
118<dd><p>All Go operators are supported except <code>&amp;^</code>.
119The Go <code>_</code> &ldquo;blank identifier&rdquo; is not supported.
120Automatic dereferencing of pointers is not supported.
121</p></dd>
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