[Bug symtab/29105] new DWARF reader still slow

["tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29105

--- Comment #11 from Tom Tromey <tromey at sourceware dot org> ---
I managed to reproduce this with the 'sizeof' test program
(after hacking gdb to ignore .gdb_index, since the Fedora
libc debuginfo uses that).

I couldn't reproduce it when running on gdb itself,
and I discovered that I can avoid the problem by
using C++.  That is, when debugging sizeof:

(gdb) set debug dwarf-read 1
(gdb) set lang c++
Warning: the current language does not match this frame.
(gdb) print sizeof(short)
$1 = 2

So I tend to think this probably a bug elsewhere in gdb.

In C++, gdb canonializes inputs so that lookups will succeed.
This isn't done for C, I think, probably because it seemed
like there was no need.  But given that the DWARF says
"signed short" as a symbol name, perhaps we need some special
cases for this sort of thing.

-- 
You are receiving this mail because:
You are on the CC list for the bug.