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From: Tom Tromey <tromey@adacore.com>
To: Simon Marchi <simark@simark.ca>
Cc: Tom Tromey <tromey@adacore.com>,  gdb-patches@sourceware.org
Subject: Re: [PATCH 5/6] Return void from buildsym_compunit::push_context
Date: Mon, 20 Apr 2026 08:11:45 -0600	[thread overview]
Message-ID: <875x5lsov2.fsf@tromey.com> (raw)
In-Reply-To: <bbf9b2c8-ad9a-4fc7-9c54-db40dae55f3d@simark.ca> (Simon Marchi's message of "Fri, 17 Apr 2026 16:22:22 -0400")

>>>>> "Simon" == Simon Marchi <simark@simark.ca> writes:

Simon> On 4/17/26 2:24 PM, Tom Tromey wrote:
>> diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
>> index 4447923ae3e..2a330655c48 100644
>> --- a/gdb/dwarf2/read.c
>> +++ b/gdb/dwarf2/read.c
>> @@ -7799,10 +7799,11 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu)
>> }
>> }
>> 
>> -  gdb_assert (cu->get_builder () != nullptr);
>> -  context_stack &ctx = cu->get_builder ()->push_context (lowpc);
>> +  buildsym_compunit *builder = cu->get_builder ();
>> +  gdb_assert (builder != nullptr);
>> +  builder->push_context (lowpc);
>> symbol *func_sym = new_symbol (die, read_type_die (die, cu), cu, templ_func);
>> -  ctx.name = func_sym;
>> +  builder->set_current_context_function (func_sym);

Simon> It might be tricky depending on how new_symbol uses the current context
Simon> when reading a DW_TAG_subprogram, but I wonder if we could call
Simon> new_symbol first, then pass the resulting symbol to push_context.  Then
Simon> we wouldn't need to have a setter.  If that's possible, I think it would
Simon> be slightly better, because it would show that the symbol is initialized
Simon> when the context is pushed and can't change.  Other callers of
Simon> push_context would pass a nullptr symbol.

I had looked at this when writing the patch but I concluded that this
wasn't possible because new_symbol calls add_symbol_to_list.

Ideally new_symbol would be removed and everything cleaned up.  But
that's difficult.

Tom

  reply	other threads:[~2026-04-20 14:12 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-17 18:24 [PATCH 0/6] Some buildsym cleanups Tom Tromey
2026-04-17 18:24 ` [PATCH 1/6] Use scoped_restore for dwarf2_cu::list_in_scope Tom Tromey
2026-04-17 18:24 ` [PATCH 2/6] Remove some dead code from buildsym.c Tom Tromey
2026-04-17 20:10   ` Simon Marchi
2026-04-20 14:19     ` Tom Tromey
2026-04-17 18:24 ` [PATCH 3/6] Remove context_stack::depth Tom Tromey
2026-04-17 18:24 ` [PATCH 4/6] Change pop_context to return a block Tom Tromey
2026-04-17 20:11   ` Simon Marchi
2026-04-20 14:09     ` Tom Tromey
2026-04-20 14:20     ` Tom Tromey
2026-04-17 18:24 ` [PATCH 5/6] Return void from buildsym_compunit::push_context Tom Tromey
2026-04-17 20:22   ` Simon Marchi
2026-04-20 14:11     ` Tom Tromey [this message]
2026-04-17 18:24 ` [PATCH 6/6] Rename context_stack and make it private Tom Tromey
2026-04-17 20:24 ` [PATCH 0/6] Some buildsym cleanups Simon Marchi

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