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Re: [PATCH] -gused

On Thursday, June 19, 2003, at 10:09 PM, Richard Henderson wrote:

On Thu, Jun 19, 2003 at 07:02:33PM -0700, Devang Patel wrote:
I found one bug in the patch I posted earlier. After fixing it gdb
dejagnu test reports 255 failures.

Excellent. This is exactly what I was hoping for. ;-)

So with drow's analysis of the additional failures that
you didn't understand, I think the patch is probably on
the right track.  Can you re-post it one more time?

Here it is. I'd like to continue to provide -gused for Darwin GCC users' benefit.
I am ready to add -feliminate-unused-debug-symbols flag in a separate


2003-06-20 Devang Patel <>

* dbxout.c (dbxout_nesting): New static variable.
(dbxout_flush_symbol_queue): New static function.
(dbxout_queue_symbol): Same.
(symbol_queue): New static variable.
(symbol_queue_index): Same.
(symbol_queue_size): Same.
(dbxout_init): Delay symbol output.
(dbxout_global_decl): Save, set and reset TREE_USED bit around dbxout_symbol() call.
(dbxout_begin_function): Same.
(dbxout_finish): Free symbol queue.
(dbxout_type): Put appropriate symbols in queue.
(dbxout_symbol): Put info for symbol's type in queue. Decrement/Increment nesting counts
flush symbol queue appropriately.
(dbxout_parms): Increment dbxout nesting.
(dbxout_reg_parms): Same.
* flags.h (flag_debug_only_used_symbols): New.
* toplevl.c (flag_debug_only_used_symbols): New variable.
(decode_g_option): Decode -gused.
* doc/invoke.texi (Debugging Options): Document -gused.

Attachment: gused.take2.diff
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