From: Tom Tromey <tom@tromey.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Tom Tromey <tom@tromey.com>, gdb-patches@sourceware.org
Subject: Re: [PATCH v2 10/10] Add --enable-ubsan
Date: Tue, 02 Oct 2018 21:26:00 -0000 [thread overview]
Message-ID: <87h8i4ghwt.fsf@tromey.com> (raw)
In-Reply-To: <83va6k3172.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 02 Oct 2018 16:52:49 +0300")
>>>>> "Eli" == Eli Zaretskii <eliz@gnu.org> writes:
>> + Enable or disable the undefined behavior sanitizer. Release
>> + versions of gdb disable this by default, but development versions
Eli> "GDB", capitalized, I guess?
Done.
>> +`--enable-ubsan'
>> + Enable the GCC undefined behavior sanitizer. By default this is
>> + disabled in GDB releases, but enabled when building from git.
>> + The undefined behavior sanitizer checks for C++ undefined
>> + behavior. It has a performance cost, so if you are looking at
>> + GDB's performance, you should disable it.
Eli> Does this require some minimal version of g++? If so, I think we
Eli> should mention that. And what about testing for this support at
Eli> configure time?
It was in GCC 4.9. It is tested at configure time. I've updated the
text & will send a new patch.
>> +# ac_fn_cxx_try_link LINENO
>> +# -------------------------
[..]
Eli> Is this hunk related to the issue at hand?
Yes, I think it's part of configure expansion of the new test.
Tom
next prev parent reply other threads:[~2018-10-02 21:26 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 4:44 [PATCH v2 00/10] Undefined Behavior Sanitizer, this time with docs Tom Tromey
2018-10-02 4:44 ` [PATCH v2 06/10] Avoid undefined behavior in parse_number Tom Tromey
2018-10-02 4:44 ` [PATCH v2 02/10] Change dwarf2_frame_state_reg_info::reg to be std::vector Tom Tromey
2018-10-03 17:28 ` Pedro Alves
2018-10-03 21:05 ` Tom Tromey
2018-10-02 4:44 ` [PATCH v2 07/10] Avoid undefined behavior in read_signed_leb128 Tom Tromey
2018-10-02 4:44 ` [PATCH v2 09/10] Avoid undefined behavior in expression dumping Tom Tromey
2018-10-03 17:48 ` Pedro Alves
2018-10-02 4:44 ` [PATCH v2 04/10] Avoid undefined behavior in extract_integer Tom Tromey
2018-10-02 4:44 ` [PATCH v2 08/10] Avoid undefined behavior in ada_operator_length Tom Tromey
2018-10-02 4:44 ` [PATCH v2 10/10] Add --enable-ubsan Tom Tromey
2018-10-02 13:53 ` Eli Zaretskii
2018-10-02 21:26 ` Tom Tromey [this message]
2018-10-02 21:28 ` Tom Tromey
2018-10-03 17:31 ` Eli Zaretskii
2018-10-03 17:54 ` Pedro Alves
2018-10-03 21:09 ` Tom Tromey
2018-10-02 4:44 ` [PATCH v2 05/10] Avoid undefined behavior in read_subrange_type Tom Tromey
2018-10-02 4:44 ` [PATCH v2 03/10] Use unsigned as base type for some enums Tom Tromey
2018-10-03 17:33 ` Pedro Alves
2018-10-03 21:07 ` Tom Tromey
2018-10-02 4:44 ` [PATCH v2 01/10] Do not pass NULL to memcpy Tom Tromey
2018-10-03 17:57 ` [PATCH v2 00/10] Undefined Behavior Sanitizer, this time with docs Pedro Alves
2018-10-03 21:09 ` Tom Tromey
2018-10-08 19:14 ` John Baldwin
2018-10-08 20:22 ` Joel Brobecker
2018-10-09 10:44 ` Pedro Alves
2018-10-12 21:07 ` Joel Brobecker
-- strict thread matches above, loose matches on Subject: below --
2018-08-30 2:44 [PATCH v2 00/10] Enable undefined behavior sanitizer Tom Tromey
2018-08-30 2:44 ` [PATCH v2 10/10] Add --enable-ubsan Tom Tromey
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