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17<title>Debugging with GDB: Show</title>
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70<a name="Displaying-the-Language"></a>
71<h3 class="section">15.2 Displaying the Language</h3>
72
73<p>The following commands help you find out which language is the
74working language, and also what language source files were written in.
75</p>
76<dl compact="compact">
77<dt><code>show language</code></dt>
78<dd><a name="show-language"></a><a name="index-show-language"></a>
79<p>Display the current working language.  This is the
80language you can use with commands such as <code>print</code> to
81build and compute expressions that may involve variables in your program.
82</p>
83</dd>
84<dt><code>info frame</code></dt>
85<dd><a name="index-info-frame_002c-show-the-source-language"></a>
86<p>Display the source language for this frame.  This language becomes the
87working language if you use an identifier from this frame.
88See <a href="Frame-Info.html#Frame-Info">Information about a Frame</a>, to identify the other
89information listed here.
90</p>
91</dd>
92<dt><code>info source</code></dt>
93<dd><a name="index-info-source_002c-show-the-source-language"></a>
94<p>Display the source language of this source file.
95See <a href="Symbols.html#Symbols">Examining the Symbol Table</a>, to identify the other
96information listed here.
97</p></dd>
98</dl>
99
100<p>In unusual circumstances, you may have source files with extensions
101not in the standard list.  You can then set the extension associated
102with a language explicitly:
103</p>
104<dl compact="compact">
105<dt><code>set extension-language <var>ext</var> <var>language</var></code></dt>
106<dd><a name="index-set-extension_002dlanguage"></a>
107<p>Tell <small>GDB</small> that source files with extension <var>ext</var> are to be
108assumed as written in the source language <var>language</var>.
109</p>
110</dd>
111<dt><code>info extensions</code></dt>
112<dd><a name="index-info-extensions"></a>
113<p>List all the filename extensions and the associated languages.
114</p></dd>
115</dl>
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