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The Ada mode of No value for GDBN supports a fairly large subset of Ada expression syntax, with some extensions. The philosophy behind the design of this subset is

Thus, for brevity, the debugger acts as if there were implicit with and use clauses in effect for all user-written packages, making it unnecessary to fully qualify most names with their packages, regardless of context. Where this causes ambiguity, No value for GDBN asks the user's intent.

The debugger will start in Ada mode if it detects an Ada main program. As for other languages, it will enter Ada mode when stopped in a program that was translated from an Ada source file.

While in Ada mode, you may use `' for comments. This is useful mostly for documenting command files. The standard No value for GDBN comment (‘#’) still works at the beginning of a line in Ada mode, but not in the middle (to allow based literals).

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.

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