[PATCH]Add symbol whose field 'has_type' has been set to partial symbol table

[hex <heixia108@gmail.com>]

This patch intends to add symbol whose field 'has_type' has been set
to partial symbol table.

e.g.
// test.c
const int var = 3;

// Then compile it with `gcc -g -c test.c`(For the lastest GCC, we
need use 'gcc -g -O1 -c test.' to get the following DIE)
We could see the DIE of 'var' is as following:
 <1><25>: Abbrev Number: 2 (DW_TAG_variable)
    <26>   DW_AT_name        : var
    <2a>   DW_AT_decl_file   : 1
    <2b>   DW_AT_decl_line   : 1
    <2c>   DW_AT_type        : <0x31>
    <30>   DW_AT_const_value : 3

Latest GDB will not add it to partial symbol table because its symbol
satisfies 'pdi->d.locdesc == NULL'.  I think we need add it to partial
symbol table.


2013-10-24  Jun Gong  <heixia108@gmail.com>

          * dwarf2read.c(add_partial_symbol): Add symbol whose field
'has_type' has been set to partial symbol table.


--- gdb-7.6.50.20131021.orig/gdb/dwarf2read.c 2013-10-16
10:55:27.000000000 +0800
+++ gdb-7.6.50.20131021/gdb/dwarf2read.c 2013-10-24 14:29:18.737067814 +0800
@@ -6733,8 +6733,9 @@ add_partial_symbol (struct partial_die_i
  }
       else
  {
-  /* Static Variable.  Skip symbols without location descriptors.  */
-  if (pdi->d.locdesc == NULL)
+  /* Static Variable.  Skip symbols without location descriptors or
+     has_type not set.  */
+  if (pdi->d.locdesc == NULL && pdi->has_type == 0)
     {
       xfree (built_actual_name);
       return;