From: Kevin Buettner <kevinb@redhat.com>
To: gdb-patches@sourceware.org
Subject: Re: [PATCH 5/8] Fix latent bug in msp430-tdep.c
Date: Fri, 12 Oct 2018 04:10:00 -0000 [thread overview]
Message-ID: <20181011211023.72beeaf9@pinnacle.lan> (raw)
In-Reply-To: <20180923040814.27941-6-tom@tromey.com>
On Sat, 22 Sep 2018 22:08:11 -0600
Tom Tromey <tom@tromey.com> wrote:
> -Wshadow=local found this latent bug. msp430-tdep.c does:
>
> const gdb_byte *arg_bits;
> {
> /* Aggregates of any size are passed by reference. */
> gdb_byte struct_addr[4];
> [...
> arg_bits = struct_addr;
> }
> ... use arg_bits
>
> Here, arg_bits can point to an object that's gone out of scope.
>
> The fix is to hoist the inner "struct_addr" buffer to an outer scope,
> and rename it to avoid shadowing.
>
> gdb/ChangeLog
> 2018-09-22 Tom Tromey <tom@tromey.com>
>
> * msp430-tdep.c (msp430_push_dummy_call): Rename inner
> "structs_addr" and hoist declaration.
LGTM.
Kevin
next prev parent reply other threads:[~2018-10-12 4:10 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-23 4:08 [PATCH 0/8] Add -Wshadow=local Tom Tromey
2018-09-23 4:08 ` [PATCH 7/8] Shadowing fix in gdbscm_frame_read_var Tom Tromey
[not found] ` <6d098a36-c483-77b8-61a6-87768c29f5d5@ericsson.com>
2018-10-04 12:44 ` Tom Tromey
2018-09-23 4:08 ` [PATCH 4/8] Avoid shadowing in linux-tdep.c Tom Tromey
2018-10-12 4:50 ` Kevin Buettner
2018-09-23 4:08 ` [PATCH 6/8] Avoid shadowing in fdwalk Tom Tromey
2018-10-12 4:54 ` Kevin Buettner
2018-09-23 4:08 ` [PATCH 2/8] Avoid shadowing in gdbserver Tom Tromey
2018-10-12 4:19 ` Kevin Buettner
2018-09-23 4:08 ` [PATCH 5/8] Fix latent bug in msp430-tdep.c Tom Tromey
2018-10-12 4:10 ` Kevin Buettner [this message]
2018-09-23 4:08 ` [PATCH 8/8] Add -Wshadow=local Tom Tromey
2018-09-23 4:08 ` [PATCH 3/8] Use std::string in mdebugread.c Tom Tromey
2018-10-12 4:27 ` Kevin Buettner
2018-09-23 4:09 ` [PATCH 1/8] Simple -Wshadow=local fixes Tom Tromey
2018-10-04 3:36 ` Simon Marchi
2018-10-04 12:22 ` Simon Marchi
2018-10-04 12:43 ` Tom Tromey
2018-10-03 15:02 ` [PATCH 0/8] Add -Wshadow=local Simon Marchi
[not found] ` <c0393dbe-9dbe-837a-b93d-7c2825ef3649@ericsson.com>
[not found] ` <04748d1d-0fe6-76ad-31f1-68657f8e0d56@redhat.com>
2018-10-03 17:53 ` Joel Brobecker
2018-10-05 4:57 ` Tom Tromey
2018-10-05 9:06 ` Rainer Orth
2018-10-05 11:14 ` Joel Brobecker
2018-10-05 13:37 ` [SPAM] " Tom Tromey
2018-10-05 15:58 ` Rainer Orth
2018-10-12 5:25 ` Kevin Buettner
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