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Re: -file-list-exec-source-files && libraries
Bob Rossi <bob@brasko.net> writes:
> On Fri, Jun 11, 2004 at 02:29:16PM -0400, Bob Rossi wrote:
> > Hi,
> >
> > A user of -file-list-exec-source-files noticed that this command does
> > not initially list the files that are in a library. For example,
> >
> > I have
> > $ ls
> > Makefile lib.c lib.h lib.o libmilib.a main main.c
> >
> > And
> > $ cat Makefile
> > all:
> > gcc -c -g -Wall lib.c
> > ar cru libmilib.a lib.o
> > gcc -g -Wall main.c -o main -L. -lmilib -I.
> >
> > When I do -file-list-exec-source-files originally, it doesn't show
> > lib.c, after I do 'list lib.c:1' it will then show the filename. Also, I
> > believe it shows all of the filenames in the library.
> >
> > My question is, is there any way to get this funcionality from the get
> > go? Load the psymtabs for all the libraries?
> >
> > Or is there a GDB command that forces loading all symbols into the
> > partial symbol table at start?
>
> Unfortunatly, I forgot to add one thing. The files from all libraries do
> show up when the stabs debugging format is used. It seems like this is a
> dwarf2 problem. Anyone know if this is a bug?
>
> Or something maybe I could look into?
Hmm. The partial symbol tables ought to be listing every source file
mentioned in the program. Otherwise, when a user refers to a source
file by name (say, to set a breakpoint), GDB won't be able to tell
which compilation units' symbols to read in.
Dwarf 2 used to have a problem with this, but the following change
fixed that problem:
2004-05-03 J. Brobecker <brobecker@gnat.com>
* dwarf2read.c (line_header): Add new included_p field in
field file_names.
(partial_die_info): New field has_stmt_list. New field line_offset.
(dwarf2_create_include_psymtab): New function.
(dwarf2_build_include_psymtabs): New function.
(add_file_name): Add forward declaration. Initialize new field.
(dwarf_decode_lines): Add new parameter. Enhance this procedure
to be able to determine the list of files included by the
given unit, and build their associated psymtabs.
(dwarf2_build_psymtabs_hard): Build the psymtabs for the included
files as well.
(psymtab_to_symtab_1): Build the symtabs of all dependencies as well.
(read_file_scope): Update call to dwarf_decode_lines.
(read_partial_die): Handle DW_AT_stmt_list attributes.
So, does 'readelf -wl main' mention all the source files? It should.
Does 'maint info psymtabs' mention all the source files? It should,
too.