mingw/info/stabs/Subranges.html

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  12 Node:<a name="Subranges">Subranges</a>,
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  18
  19 <h3 class="section">Subrange Types</h3>
  20
  21    <p>The <code>r</code> type descriptor defines a type as a subrange of another
  22 type.  It is followed by type information for the type of which it is a
  23 subrange, a semicolon, an integral lower bound, a semicolon, an
  24 integral upper bound, and a semicolon.  The AIX documentation does not
  25 specify the trailing semicolon, in an effort to specify array indexes
  26 more cleanly, but a subrange which is not an array index has always
  27 included a trailing semicolon (see <a href="Arrays.html#Arrays">Arrays</a>).
  28
  29    <p>Instead of an integer, either bound can be one of the following:
  30
  31      <dl>
  32 <dt><code>A </code><var>offset</var><code></code>
  33      <dd>The bound is passed by reference on the stack at offset <var>offset</var>
  34 from the argument list.  See <a href="Parameters.html#Parameters">Parameters</a>, for more information on such
  35 offsets.
  36
  37      <br><dt><code>T </code><var>offset</var><code></code>
  38      <dd>The bound is passed by value on the stack at offset <var>offset</var> from
  39 the argument list.
  40
  41      <br><dt><code>a </code><var>register-number</var><code></code>
  42      <dd>The bound is passed by reference in register number
  43 <var>register-number</var>.
  44
  45      <br><dt><code>t </code><var>register-number</var><code></code>
  46      <dd>The bound is passed by value in register number <var>register-number</var>.
  47
  48      <br><dt><code>J</code>
  49      <dd>There is no bound.
  50 </dl>
  51
  52    <p>Subranges are also used for builtin types; see <a href="Traditional-Builtin-Types.html#Traditional%20Builtin%20Types">Traditional Builtin Types</a>.
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