From: Tom de Vries <tdevries@suse.de>
To: hev <r@hev.cc>, Keith Seitz <keiths@redhat.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH] gdb: Fix false match issue in skip_prologue_using_linetable
Date: Tue, 18 Apr 2023 10:43:12 +0200 [thread overview]
Message-ID: <cefcf83d-90bf-be91-6eae-fe6a6a712778@suse.de> (raw)
In-Reply-To: <CAHirt9j1uNGgsfOxeBZnCYqL8okKcaoQeqXTaj_zLJpejOzM4A@mail.gmail.com>
On 4/18/23 04:26, hev wrote:
>> I have to ask, though, is there a way to write a test case for this? Maybe
>> by using dw2-prologue-end.exp as an example?
> I attempted to write a test case, but it did not work. I discovered this
> issue while running the Rust debuginfo test[1] on LoongArch. As the
> function entry alignment is 4-byte, which is the size of an instruction,
> there is no padding between the two functions. This creates a possibility
> of matching the start address of the next function. This is unlike x86,
> which is why this problem does not occur on x86. I sincerely hope that this
> information proves to be beneficial to you.
Using this information I managed to write a regression test for this,
I've attached it to a PR I opened for this issue (
https://sourceware.org/bugzilla/show_bug.cgi?id=30369 ).
Thanks,
- Tom
next prev parent reply other threads:[~2023-04-18 8:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-17 16:24 WANG Rui
2023-04-17 17:38 ` Keith Seitz
2023-04-18 2:26 ` hev
2023-04-18 8:43 ` Tom de Vries [this message]
2023-04-18 9:59 ` hev
2023-04-17 21:12 ` Lancelot SIX
2023-04-18 2:26 ` hev
2023-04-22 8:36 ` Tom de Vries
2023-04-23 1:24 ` hev
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