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| <h5 class="subsubsection">15.4.6.7 Modula-2 Type and Range Checks</h5> |
| |
| <p><a name="index-Modula_002d2-checks-852"></a> |
| <blockquote> |
| <em>Warning:</em> in this release, <span class="sc">gdb</span> does not yet perform type or |
| range checking. |
| </blockquote> |
| <!-- FIXME remove warning when type/range checks added --> |
| |
| <p><span class="sc">gdb</span> considers two Modula-2 variables type equivalent if: |
| |
| <ul> |
| <li>They are of types that have been declared equivalent via a <code>TYPE |
| </code><var>t1</var><code> = </code><var>t2</var> statement |
| |
| <li>They have been declared on the same line. (Note: This is true of the |
| <span class="sc">gnu</span> Modula-2 compiler, but it may not be true of other compilers.) |
| </ul> |
| |
| <p>As long as type checking is enabled, any attempt to combine variables |
| whose types are not equivalent is an error. |
| |
| <p>Range checking is done on all mathematical operations, assignment, array |
| index bounds, and all built-in functions and procedures. |
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