Re: Interactions of symbol-lookup with language

Elena Zannoni
2003-11-11T01:23:39Z

Paul N. Hilfinger writes:
>
> David,
>
> The symbol-lookup facilities are now organized to adapt themselves to
> the current language. We've encountered some problems with this.
>
> In particular, in decode_line_1, there is a call to find_imps, an
> Objective C function, which in turn calls lookup_symbol. When
> decode_line_1 is called while in Ada mode, this latter lookup_symbol
> acts like an Ada symbol lookup, which makes little sense given that
> find_imps is concerned with Objective C code. We have encountered
> cases where the result is anomalous.
>
> Our fix for the moment is simply to put a wrapper around decode_objc
> to force the language to objc temporarily. We are a little
> uncomfortable with submitting this kind of kludge publicly, and
> would prefer something officially blessed. One possibility is to have
> a variant of lookup_symbol that allows one to specify a prevailing
> language for those cases where it matters. We have at least one other
> place where we'd like to "look up a symbol as in C".
>
> In any case, we'd welcome your (and other maintainers') comments.
>
> Paul Hilfinger
> ACT, Inc.

Hmmm, this is the same bit of code which was creating problems with
breakpoints in objc. (see Adam's post of a week or so ago). It seems
like a new interface is needed. We have stretched the current one(s)
to its limits. I'll have to think a bit about this.

elena