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+<p>
+Next: <a href="Omissions-from-Ada.html#Omissions-from-Ada" accesskey="n" rel="next">Omissions from Ada</a>, Up: <a href="Ada.html#Ada" accesskey="u" rel="up">Ada</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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+<hr>
+<a name="Introduction"></a>
+<h4 class="subsubsection">15.4.10.1 Introduction</h4>
+<a name="index-Ada-mode_002c-general"></a>
+
+<p>The Ada mode of <small>GDB</small> supports a fairly large subset of Ada expression
+syntax, with some extensions.
+The philosophy behind the design of this subset is
+</p>
+<ul>
+<li> That <small>GDB</small> should provide basic literals and access to operations for
+arithmetic, dereferencing, field selection, indexing, and subprogram calls,
+leaving more sophisticated computations to subprograms written into the
+program (which therefore may be called from <small>GDB</small>).
+
+</li><li> That type safety and strict adherence to Ada language restrictions
+are not particularly important to the <small>GDB</small> user.
+
+</li><li> That brevity is important to the <small>GDB</small> user.
+</li></ul>
+
+<p>Thus, for brevity, the debugger acts as if all names declared in
+user-written packages are directly visible, even if they are not visible
+according to Ada rules, thus making it unnecessary to fully qualify most
+names with their packages, regardless of context. Where this causes
+ambiguity, <small>GDB</small> asks the user&rsquo;s intent.
+</p>
+<p>The debugger will start in Ada mode if it detects an Ada main program.
+As for other languages, it will enter Ada mode when stopped in a program that
+was translated from an Ada source file.
+</p>
+<p>While in Ada mode, you may use &lsquo;<tt>--</tt>&rsquo; for comments. This is useful
+mostly for documenting command files. The standard <small>GDB</small> comment
+(&lsquo;<samp>#</samp>&rsquo;) still works at the beginning of a line in Ada mode, but not in the
+middle (to allow based literals).
+</p>
+
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