From: Tsukasa OI <research_trasio@irq.a4lg.com>
To: Mike Frysinger <vapier@gentoo.org>, gdb-patches@sourceware.org
Subject: Re: [PATCH 27/40] sim/ppc: Add extra parenthesis to avoid ambiguity
Date: Mon, 24 Oct 2022 19:59:34 +0900 [thread overview]
Message-ID: <1518fba5-45ce-443c-057d-c409ecc80a71@irq.a4lg.com> (raw)
In-Reply-To: <Y1VYUyD/DUawTCJW@vapier>
On 2022/10/24 0:05, Mike Frysinger wrote:
> On 20 Oct 2022 09:32, Tsukasa OI wrote:
>> Clang generates a warning if it considers that an expression is misleading
>> due to a lack of parenthesis ("-Wparentheses").
>> On the default configuration, it causes a build failure
>> (unless "--disable-werror" is specified).
>>
>> This commit adds extra parenthesis to avoid ambiguity.
>> ---
>> sim/ppc/altivec.igen | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/sim/ppc/altivec.igen b/sim/ppc/altivec.igen
>> index 63fe95a53d5..eda7af9dd6a 100644
>> --- a/sim/ppc/altivec.igen
>> +++ b/sim/ppc/altivec.igen
>> @@ -231,7 +231,7 @@ void::model-function::ppc_insn_vr_vscr:itable_index index, model_data *model_ptr
>> busy_ptr->vscr_busy = 1;
>>
>> if (out_vmask)
>> - busy_ptr->nr_writebacks = 1 + (PPC_ONE_BIT_SET_P(out_vmask)) ? 1 : 2;
>> + busy_ptr->nr_writebacks = (1 + (PPC_ONE_BIT_SET_P(out_vmask))) ? 1 : 2;
>
> fairly certain this is incorrect. this pretty much guarantees that "1" will
> always be used and never "2".
>
> Andrew posted a diff fix that i think is correct.
> -mike
I agree that. I kept the original semantics but this is definitely a
bug (I think Andrew's fix is correct). I will leave it to Andrew (PATCH
05/10).
Thanks,
Tsukasa
next prev parent reply other threads:[~2022-10-24 10:59 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 9:32 [PATCH 00/40] sim+gdb: Suppress warnings if built with Clang (big batch 1) Tsukasa OI
2022-10-20 9:32 ` [PATCH 01/40] gdb/unittests: PR28413, suppress warnings generated by Gnulib Tsukasa OI
2022-11-14 14:01 ` Simon Marchi
2022-10-20 9:32 ` [PATCH 02/40] sim: Check known getrusage declaration existence Tsukasa OI
2022-10-23 13:59 ` Mike Frysinger
2022-10-24 10:47 ` Tsukasa OI
2022-10-24 16:03 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 03/40] sim/aarch64: Remove unused functions Tsukasa OI
2022-10-23 14:02 ` Mike Frysinger
2022-10-24 10:55 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 04/40] cpu/cris: Initialize some variables on CRIS CPU Tsukasa OI
2022-10-20 9:32 ` [PATCH 05/40] cpu/cris: Add u-stall virtual unit to CRIS v32 Tsukasa OI
2022-10-20 9:32 ` [PATCH 06/40] sim/cris: Move declarations of f_specific_init Tsukasa OI
2022-10-23 14:26 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 07/40] sim/cris: Regenerate with CGEN Tsukasa OI
2022-10-23 14:27 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 08/40] sim/erc32: Insert void parameter Tsukasa OI
2022-10-23 14:04 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 09/40] sim/erc32: Use int32_t as event callback argument Tsukasa OI
2022-10-23 14:32 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 10/40] sim/erc32: Use int32_t as IRQ " Tsukasa OI
2022-10-23 14:33 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 11/40] cpu/frv: Initialize some variables Tsukasa OI
2022-10-20 9:32 ` [PATCH 12/40] sim/frv: Initialize nesr variable Tsukasa OI
2022-10-23 14:39 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 13/40] sim/frv: Initialize some variables Tsukasa OI
2022-10-23 14:34 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 14/40] sim/frv: Add explicit casts Tsukasa OI
2022-10-23 14:40 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 15/40] sim/h8300: Add "+ 0x0" to avoid self-assignments Tsukasa OI
2022-10-23 14:05 ` Mike Frysinger
2022-10-24 10:55 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 16/40] sim/lm32: fix some missing function declaration warnings Tsukasa OI
2022-10-23 14:41 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 17/40] sim/lm32: Add explicit casts Tsukasa OI
2022-10-23 14:42 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 18/40] sim/m32c: Stop using middle dot Tsukasa OI
2022-10-23 14:48 ` Mike Frysinger
2022-10-27 2:08 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 19/40] sim/m32r: Initialize "list" variable Tsukasa OI
2022-10-23 14:50 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 20/40] sim/m32r: Prepare required functions Tsukasa OI
2022-10-23 14:53 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 21/40] sim/m32r: Declare all " Tsukasa OI
2022-10-23 14:54 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 22/40] sim/m32r: Fixes to Linux emulator Tsukasa OI
2022-10-23 14:56 ` Mike Frysinger
2022-10-27 2:40 ` Tsukasa OI
2022-10-27 16:05 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 23/40] sim/m32r: Add explicit casts Tsukasa OI
2022-10-23 14:57 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 24/40] sim/mips: Fix enum type-related issues on cp1.c Tsukasa OI
2022-10-23 15:00 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 25/40] sim/mn10300: Add an explicit cast Tsukasa OI
2022-10-23 15:03 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 26/40] sim/ppc: Remove getrusage declarations if possible Tsukasa OI
2022-10-23 15:04 ` Mike Frysinger
2022-10-27 2:00 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 27/40] sim/ppc: Add extra parenthesis to avoid ambiguity Tsukasa OI
2022-10-23 15:05 ` Mike Frysinger
2022-10-24 10:59 ` Tsukasa OI [this message]
2022-10-20 9:32 ` [PATCH 28/40] sim/ppc: Initialize stat type buffer Tsukasa OI
2022-10-23 15:06 ` Mike Frysinger
2022-10-24 11:00 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 29/40] sim/ppc: Fix indentation on generated code Tsukasa OI
2022-10-23 15:07 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 30/40] sim/ppc: Use TRACE with initialized entry_point Tsukasa OI
2022-10-23 15:08 ` Mike Frysinger
2022-10-24 11:02 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 31/40] sim/ppc: Initialize help variables Tsukasa OI
2022-10-23 15:08 ` Mike Frysinger
2022-10-24 16:33 ` Andrew Burgess
2022-10-20 9:32 ` [PATCH 32/40] sim/ppc: Add an explicit cast Tsukasa OI
2022-10-23 15:10 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 33/40] sim/ppc: Initialize reg and control_nr Tsukasa OI
2022-10-23 15:14 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 34/40] sim/rx: Mark unused function Tsukasa OI
2022-10-23 15:14 ` Mike Frysinger
2022-10-24 16:30 ` Andrew Burgess
2022-10-29 11:58 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 35/40] sim/sh: Initialize some variables Tsukasa OI
2022-10-23 15:19 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 36/40] sim/sh: Use fabs instead of abs Tsukasa OI
2022-10-23 14:17 ` Mike Frysinger
2022-10-24 10:56 ` Tsukasa OI
2022-10-20 9:32 ` [PATCH 37/40] sim/sh: Remove redundant function declaration Tsukasa OI
2022-10-23 14:19 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 38/40] sim/bpf: Add explicit casts Tsukasa OI
2022-10-23 15:15 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 39/40] sim/iq2000: " Tsukasa OI
2022-10-23 15:16 ` Mike Frysinger
2022-10-20 9:32 ` [PATCH 40/40] sim/or1k: " Tsukasa OI
2022-10-23 15:16 ` Mike Frysinger
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