[RFA 3/3] Change ada_catchpoint::excep_string to be a std::string

[Simon Marchi]

On 2018-05-19 12:06 PM, Tom Tromey wrote:
> This changes ada_catchpoint::excep_string to be a std::string and then
> fixes up all t he users.
> 
> This found a memory leak in catch_ada_exception_command_split, where
> "cond" was copied but never freed.
> 
> I changed the type of the "cond_string" argument to
> catch_ada_exception_command_split to follow the rule that out
> parameters should be pointers and not references.

It wasn't a rule yet (AFAIK), but it is now.

https://sourceware.org/ml/gdb-patches/2018-05/msg00450.html

The patch LGTM, with some nits.

> 
> This patch enables the removal of some cleanups and also the function
> ada_get_next_arg.

You can remove the ada_catchpoint destructor I think.

> @@ -13333,13 +13286,11 @@ ada_exception_sal (enum ada_exception_catchpoint_kind ex, char *excep_string,
>  
>     EX_KIND is the kind of exception catchpoint to be created.
>  
> -   If EXCEPT_STRING is NULL, this catchpoint is expected to trigger
> +   If EXCEPT_STRING is empty, this catchpoint is expected to trigger
>     for all exceptions.  Otherwise, EXCEPT_STRING indicates the name
> -   of the exception to which this catchpoint applies.  When not NULL,
> -   the string must be allocated on the heap, and its deallocation
> -   is no longer the responsibility of the caller.
> +   of the exception to which this catchpoint applies.
>  
> -   COND_STRING, if not NULL, is the catchpoint condition.  This string
> +   COND_STRING, if not empty, is the catchpoint condition.  This string
>     must be allocated on the heap, and its deallocation is no longer
>     the responsibility of the caller.

The last part of this paragraph is probably no longer valid.

Simon