Re: [PATCH] tests/plugin: prevent uninitialized warning

["Alex Bennée" <alex.bennee@linaro.org>]

Chenqun (kuhn) <kuhn.chenqun@huawei.com> writes:

>>-----Original Message-----
>>From: Alex Bennée [mailto:alex.bennee@linaro.org]
>>Sent: Thursday, February 6, 2020 8:46 PM
>>To: Chenqun (kuhn) <kuhn.chenqun@huawei.com>
>>Cc: qemu-devel@nongnu.org; Zhanghailiang
>><zhang.zhanghailiang@huawei.com>; qemu-trivial@nongnu.org;
>>richard.henderson@linaro.org
>>Subject: Re: [PATCH] tests/plugin: prevent uninitialized warning
>>
>>
>>kuhn.chenqun@huawei.com writes:
>>
>>> From: Chen Qun <kuhn.chenqun@huawei.com>
>>>
>>> According to the glibc function requirements, we need initialise  the
>>> variable. Otherwise there will be compilation warnings:
>>>
>>> glib-autocleanups.h:28:3: warning: ‘out’ may be used uninitialized in
>>> this function [-Wmaybe-uninitialized]
>>>    g_free (*pp);
>>>    ^~~~~~~~~~~~
>>>
>>> Reported-by: Euler Robot <euler.robot@huawei.com>
>>> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
>>
>>Queued to plugins/next with Thomas' single line suggestion, thanks.
>
> Thank you!
> By the way,  what is plugins/next connection address?

My tree is on github:

  https://github.com/stsquad/qemu/tree/plugins/next

>
>>
>>> ---
>>>  tests/plugin/bb.c   | 2 +-
>>>  tests/plugin/insn.c | 2 +-
>>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/tests/plugin/bb.c b/tests/plugin/bb.c index
>>> f30bea08dc..8b9da23a04 100644
>>> --- a/tests/plugin/bb.c
>>> +++ b/tests/plugin/bb.c
>>> @@ -22,7 +22,7 @@ static bool do_inline;
>>>
>>>  static void plugin_exit(qemu_plugin_id_t id, void *p)  {
>>> -    g_autofree gchar *out;
>>> +    g_autofree gchar *out = NULL;
>>>      out = g_strdup_printf("bb's: %" PRIu64", insns: %" PRIu64 "\n",
>>>                            bb_count, insn_count);
>>>      qemu_plugin_outs(out);
>>> diff --git a/tests/plugin/insn.c b/tests/plugin/insn.c index
>>> 0a8f5a0000..c83b1c0157 100644
>>> --- a/tests/plugin/insn.c
>>> +++ b/tests/plugin/insn.c
>>> @@ -44,7 +44,7 @@ static void vcpu_tb_trans(qemu_plugin_id_t id,
>>> struct qemu_plugin_tb *tb)
>>>
>>>  static void plugin_exit(qemu_plugin_id_t id, void *p)  {
>>> -    g_autofree gchar *out;
>>> +    g_autofree gchar *out = NULL;
>>>      out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
>>>      qemu_plugin_outs(out);
>>>  }
>>
>>
>>--
>>Alex Bennée


-- 
Alex Bennée