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| <h4 class="subsection">15.1.2 Setting the Working Language</h4> |
| |
| <p>If you allow <span class="sc">gdb</span> to set the language automatically, |
| expressions are interpreted the same way in your debugging session and |
| your program. |
| |
| <p><a name="index-set-language-779"></a>If you wish, you may set the language manually. To do this, issue the |
| command ‘<samp><span class="samp">set language </span><var>lang</var></samp>’, where <var>lang</var> is the name of |
| a language, such as |
| <code>c</code> or <code>modula-2</code>. |
| For a list of the supported languages, type ‘<samp><span class="samp">set language</span></samp>’. |
| |
| <p>Setting the language manually prevents <span class="sc">gdb</span> from updating the working |
| language automatically. This can lead to confusion if you try |
| to debug a program when the working language is not the same as the |
| source language, when an expression is acceptable to both |
| languages—but means different things. For instance, if the current |
| source file were written in C, and <span class="sc">gdb</span> was parsing Modula-2, a |
| command such as: |
| |
| <pre class="smallexample"> print a = b + c |
| </pre> |
| <p class="noindent">might not have the effect you intended. In C, this means to add |
| <code>b</code> and <code>c</code> and place the result in <code>a</code>. The result |
| printed would be the value of <code>a</code>. In Modula-2, this means to compare |
| <code>a</code> to the result of <code>b+c</code>, yielding a <code>BOOLEAN</code> value. |
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