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Date:   Wed, 11 Mar 2020 01:41:01 +0300
From:   "Dmitry V. Levin" <ldv@altlinux.org>
To:     Bernd Edlinger <bernd.edlinger@hotmail.de>
Cc:     "Eric W. Biederman" <ebiederm@xmission.com>,
        Christian Brauner <christian.brauner@ubuntu.com>,
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        Thomas Gleixner <tglx@linutronix.de>,
        Oleg Nesterov <oleg@redhat.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Andrei Vagin <avagin@gmail.com>,
        Ingo Molnar <mingo@kernel.org>,
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        Yuyang Du <duyuyang@gmail.com>,
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Subject: Re: [PATCH 2/4] selftests/ptrace: add test cases for dead-locks
Message-ID: <20200310224100.GA1563@altlinux.org>
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On Tue, Mar 10, 2020 at 02:44:01PM +0100, Bernd Edlinger wrote:
> This adds test cases for ptrace deadlocks.
> 
> Additionally fixes a compile problem in get_syscall_info.c,
> observed with gcc-4.8.4:
> 
> get_syscall_info.c: In function 'get_syscall_info':
> get_syscall_info.c:93:3: error: 'for' loop initial declarations are only
>                                  allowed in C99 mode
>    for (unsigned int i = 0; i < ARRAY_SIZE(args); ++i) {
>    ^
> get_syscall_info.c:93:3: note: use option -std=c99 or -std=gnu99 to compile
>                                your code
[...]
> @@ -1,6 +1,6 @@
>  # SPDX-License-Identifier: GPL-2.0-only
> -CFLAGS += -iquote../../../../include/uapi -Wall
> +CFLAGS += -std=c99 -pthread -iquote../../../../include/uapi -Wall

Wouldn't it be better to choose -std=gnu99 over -std=c99?


-- 
ldv