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| <h5 class="subsubsection">15.4.10.4 Overloading support for Ada</h5> |
| |
| <p><a name="index-overloading_002c-Ada-1065"></a> |
| The debugger supports limited overloading. Given a subprogram call in which |
| the function symbol has multiple definitions, it will use the number of |
| actual parameters and some information about their types to attempt to narrow |
| the set of definitions. It also makes very limited use of context, preferring |
| procedures to functions in the context of the <code>call</code> command, and |
| functions to procedures elsewhere. |
| |
| <p>If, after narrowing, the set of matching definitions still contains more than |
| one definition, <span class="sc">gdb</span> will display a menu to query which one it should |
| use, for instance: |
| |
| <pre class="smallexample"> (gdb) print f(1) |
| Multiple matches for f |
| [0] cancel |
| [1] foo.f (integer) return boolean at foo.adb:23 |
| [2] foo.f (foo.new_integer) return boolean at foo.adb:28 |
| > |
| </pre> |
| <p>In this case, just select one menu entry either to cancel expression evaluation |
| (type <kbd>0</kbd> and press <RET>) or to continue evaluation with a specific |
| instance (type the corresponding number and press <RET>). |
| |
| <p>Here are a couple of commands to customize <span class="sc">gdb</span>'s behavior in this |
| case: |
| |
| |
| <a name="index-set-ada-print_002dsignatures-1066"></a> |
| <dl><dt><code>set ada print-signatures</code><dd>Control whether parameter types and return types are displayed in overloads |
| selection menus. It is <code>on</code> by default. |
| See <a href="Overloading-support-for-Ada.html#Overloading-support-for-Ada">Overloading support for Ada</a>. |
| |
| <p><a name="index-show-ada-print_002dsignatures-1067"></a><br><dt><code>show ada print-signatures</code><dd>Show the current setting for displaying parameter types and return types in |
| overloads selection menu. |
| See <a href="Overloading-support-for-Ada.html#Overloading-support-for-Ada">Overloading support for Ada</a>. |
| |
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