Symbol can't be found unless type 'tab'

[Yao Qi]

On 09/10/2012 09:18 PM, Jan Kratochvil wrote:
> On Mon, 10 Sep 2012 14:51:29 +0200, Yao Qi wrote:
>> >  <1><2c>: Abbrev Number: 3 (DW_TAG_variable)
>> >     <2d>   DW_AT_name        : i
>> >     <2f>   DW_AT_type        : <0x23>
>> >     <33>   DW_AT_location    : 0x0      (location list)
> I guess because GDB does not like such complicated location expression for
> glboal variables.

Jan, thanks for the pointer.

The "symptom" is symbol is not found in psymtab, but in symtab when I 
press 'tab' which triggers converting psymtab to symtab.  I wonder why 
symbol 'i' is *not* included in psymtab.  Examine the source of 
dwarf2read.c:add_partial_symbol, especially the case block for 
'DW_TAG_variable', gives me some clue, and I add attribute 
DW_AT_external to symbol 'i' like this,

  <1><33>: Abbrev Number: 3 (DW_TAG_variable)
     <34>   DW_AT_name        : i
     <36>   DW_AT_type        : <0x2a>
     <3a>   DW_AT_external    : 1  <--- here
     <3b>   DW_AT_location    : 0x0      (location list)

and then symbol 'i' can be found by GDB without typing extra 'tab'.
-- 
Yao