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| <h5 class="subsubsection">15.4.10.10 Ada Settings</h5> |
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| <p><a name="index-Ada-settings-1085"></a> |
| |
| <a name="index-set-varsize_002dlimit-1086"></a> |
| <dl><dt><code>set varsize-limit </code><var>size</var><dd>Prevent <span class="sc">gdb</span> from attempting to evaluate objects whose size |
| is above the given limit (<var>size</var>) when those sizes are computed |
| from run-time quantities. This is typically the case when the object |
| has a variable size, such as an array whose bounds are not known at |
| compile time for example. Setting <var>size</var> to <code>unlimited</code> |
| removes the size limitation. By default, the limit is about 65KB. |
| |
| <p>The purpose of having such a limit is to prevent <span class="sc">gdb</span> from |
| trying to grab enormous chunks of virtual memory when asked to evaluate |
| a quantity whose bounds have been corrupted or have not yet been fully |
| initialized. The limit applies to the results of some subexpressions |
| as well as to complete expressions. For example, an expression denoting |
| a simple integer component, such as <code>x.y.z</code>, may fail if the size of |
| <code>x.y</code> is variable and exceeds <code>size</code>. On the other hand, |
| <span class="sc">gdb</span> is sometimes clever; the expression <code>A(i)</code>, where |
| <code>A</code> is an array variable with non-constant size, will generally |
| succeed regardless of the bounds on <code>A</code>, as long as the component |
| size is less than <var>size</var>. |
| |
| <p><a name="index-show-varsize_002dlimit-1087"></a><br><dt><code>show varsize-limit</code><dd>Show the limit on types whose size is determined by run-time quantities. |
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