GDB does not show variables in inlined function

[Daniel Jacobowitz]

On Tue, Jan 06, 2004 at 03:49:50PM +0100, Josef Zlomek wrote:
> with inlining:
> 
>         .uleb128 0x2c   # (DIE (0x2a5a) DW_TAG_variable)
>         .long   0x2af2  # DW_AT_abstract_origin
>                 ^^^^^^
>         .byte   0x1     # DW_AT_location
>         .byte   0x56    # DW_OP_reg6
> ...
>         .long   0x2d    # DW_AT_type
>         .uleb128 0x24   # (DIE (0x2af2) DW_TAG_variable)
>                                 ^^^^^^
>         .long   .LASF850        # DW_AT_name: "incoming"
>         .byte   0x1     # DW_AT_decl_file
>         .value  0x3f32  # DW_AT_decl_line
>         .long   0x2d    # DW_AT_type
> 
> The location seems not to be generated for the real variable record
> (2nd part after ...) with inlining.
> 
> Should GCC generate the location for the second part (after ...) too,
> should GDB be able to link the descriptions through the marked number
> or something else?

It's the former DIE (0x2a5a) which is in scope.  It has the name
"incoming" through the abstract origin chain.  So this is probably a
GDB issue.

Up until recently that DW_AT_location in the concrete DIE was missing,
I believe.  You might want to try this (incredibly lame, untested) GDB
patch.  Let me know if it does something useful.

Index: dwarf2read.c
===================================================================
RCS file: /cvs/src/src/gdb/dwarf2read.c,v
retrieving revision 1.117
diff -u -p -r1.117 dwarf2read.c
--- dwarf2read.c	13 Dec 2003 22:29:06 -0000	1.117
+++ dwarf2read.c	6 Jan 2004 15:01:13 -0000
@@ -1813,7 +1813,6 @@ process_die (struct die_info *die, struc
       /* FIXME:  These are ignored for now.
          They could be used to set breakpoints on all inlined instances
          of a function and make GDB `next' properly over inlined functions.  */
-      break;
     case DW_TAG_lexical_block:
     case DW_TAG_try_block:
     case DW_TAG_catch_block:


-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer