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| <h5 class="subsubsection">15.4.1.5 C and C<tt>++</tt> Type and Range Checks</h5> |
| |
| <p><a name="index-C-and-C_0040t_007b_002b_002b_007d-checks-813"></a> |
| By default, when <span class="sc">gdb</span> parses C or C<tt>++</tt> expressions, type checking |
| is not used. However, if you turn type checking on, <span class="sc">gdb</span> |
| considers two variables type equivalent if: |
| |
| <ul> |
| <li>The two variables are structured and have the same structure, union, or |
| enumerated tag. |
| |
| <li>The two variables have the same type name, or types that have been |
| declared equivalent through <code>typedef</code>. |
| |
| </ul> |
| |
| <p>Range checking, if turned on, is done on mathematical operations. Array |
| indices are not checked, since they are often used to index a pointer |
| that is not itself an array. |
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