[gdb/symtab] Fix qualified name for cooked index dump

While looking at the cooked index entry for local variable l4 of function test
in test-case gdb.fortran/logical.exp:
...
$ gdb -q -batch outputs/gdb.fortran/logical/logical \
  -ex "maint print objfiles"
  ...
    [9] ((cooked_index_entry *) 0x7fc6e0003010)
    name:       l4
    canonical:  l4
    qualified:  l4
    DWARF tag:  DW_TAG_variable
    flags:      0x2 [IS_STATIC]
    DIE offset: 0x17c
    parent:     ((cooked_index_entry *) 0x7fc6e0002f20) [test]
...
I noticed that while the entry does have a parent, that's not reflected in the
qualified name.

This makes it harder to write test-cases that check the parent of a cooked
index entry.

This is due to the implementation of full_name, which skips printing
parents if the language does not specify an appropriate separator.

Fix this by using "::" as default separator, getting us instead:
...
    [9] ((cooked_index_entry *) 0x7f94ec0040c0)
    name:       l4
    canonical:  l4
    qualified:  test::l4
    DWARF tag:  DW_TAG_variable
    flags:      0x2 [IS_STATIC]
    DIE offset: 0x17c
    parent:     ((cooked_index_entry *) 0x7f94ec003fd0) [test]
...

Tested on x86_64-linux.

Approved-By: Tom Tromey <tom@tromey.com>

0 files changed, 0 insertions, 0 deletions