Re: Patch: search `directory' path for `break' files

[Tom Tromey <tromey at redhat dot com>]

>>>>> "Eli" == Eli Zaretskii <eliz@is.elta.co.il> writes:

>> With this patch, if the file name argument to lookup_symtab is a full
>> path, we run it through realpath.  Then we search for each symtab's
>> file using the `dir' list.  If we find a match, we use it.

Eli> IIRC, last time this was discussed, Per Bothner suggested to use the
Eli> current directory recorded in the debug info to convert a relative or
Eli> semi-relative file name into an absolute one.

Thanks for reminding me of this.  I had misunderstood Per's messages.
After seeing your message I went back and did some more investigation.

I think my patch is still a reasonable approach.

With my patch, we actually do use the directory information, when
available.  This info is stored in symtab->dirname, and is used when
trying to find the real path for a symtab.  This happens indirectly
via symtab_to_filename() (for symtabs).

So if that information is available, we use it.  But if it isn't, we
search the user's `directory' path.  This seems like a reasonable
approach to me.  Also, psymtabs don't have this directory information,
so in that case we can't use this approach.  We must do the path
searching.  Perhaps this is fixable; I don't know enough about
psymtabs to say.

Eli> I think this needs to be tested with as many debug infor formats
Eli> as possible.  What format did you use? DWARF2?

I used stabs.  That is the default for the compiler and system I am
using.  I will try DWARF2.  Is it easy to run the test suite with
`-gdwarf2' (or whatever)?

Tom