gdb: Overloading support for Ada
15.4.10.4 Overloading support for Ada
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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
'call' command, and functions to procedures elsewhere.
If, after narrowing, the set of matching definitions still contains
more than one definition, GDB will display a menu to query which one it
should use, for instance:
(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
>
In this case, just select one menu entry either to cancel expression
evaluation (type '0' and press <RET>) or to continue evaluation with a
specific instance (type the corresponding number and press <RET>).
Here are a couple of commands to customize GDB's behavior in this
case:
'set ada print-signatures'
Control whether parameter types and return types are displayed in
overloads selection menus. It is 'on' by default.
Overloading support for Ada.
'show ada print-signatures'
Show the current setting for displaying parameter types and return
types in overloads selection menu. Overloading support for
Ada.