diff mbox series

[v3,8/8] tests/plugin/syscall.c: fix compiler warnings

Message ID 20211129140932.4115115-9-alex.bennee@linaro.org
State Superseded
Headers show
Series more tcg, plugin, test and build fixes (pre-PR) | expand

Commit Message

Alex Bennée Nov. 29, 2021, 2:09 p.m. UTC
From: Juro Bystricky <juro.bystricky@intel.com>

Fix compiler warnings. The warnings can result in a broken build.
This patch fixes warnings such as:

In file included from /usr/include/glib-2.0/glib.h:111,
                 from ../tests/plugin/syscall.c:13:
../tests/plugin/syscall.c: In function ‘print_entry’:
/usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: ‘out’ may be
       used uninitialized in this function [-Werror=maybe-uninitialized]
   g_free (*pp);
   ^~~~~~~~~~~~
../tests/plugin/syscall.c:82:23: note: ‘out’ was declared here
     g_autofree gchar *out;
                       ^~~
In file included from /usr/include/glib-2.0/glib.h:111,
                 from ../tests/plugin/syscall.c:13:
../tests/plugin/syscall.c: In function ‘vcpu_syscall_ret’:
/usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: ‘out’ may be
        used uninitialized in this function [-Werror=maybe-uninitialized]
   g_free (*pp);
   ^~~~~~~~~~~~
../tests/plugin/syscall.c:73:27: note: ‘out’ was declared here
         g_autofree gchar *out;
                           ^~~
cc1: all warnings being treated as errors

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211128011551.2115468-1-juro.bystricky@intel.com>
---
 tests/plugin/syscall.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

Comments

Richard Henderson Nov. 29, 2021, 2:36 p.m. UTC | #1
On 11/29/21 3:09 PM, Alex Bennée wrote:
> From: Juro Bystricky <juro.bystricky@intel.com>
> 
> Fix compiler warnings. The warnings can result in a broken build.
> This patch fixes warnings such as:
> 
> In file included from /usr/include/glib-2.0/glib.h:111,
>                   from ../tests/plugin/syscall.c:13:
> ../tests/plugin/syscall.c: In function ‘print_entry’:
> /usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: ‘out’ may be
>         used uninitialized in this function [-Werror=maybe-uninitialized]
>     g_free (*pp);
>     ^~~~~~~~~~~~
> ../tests/plugin/syscall.c:82:23: note: ‘out’ was declared here
>       g_autofree gchar *out;
>                         ^~~
> In file included from /usr/include/glib-2.0/glib.h:111,
>                   from ../tests/plugin/syscall.c:13:
> ../tests/plugin/syscall.c: In function ‘vcpu_syscall_ret’:
> /usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: ‘out’ may be
>          used uninitialized in this function [-Werror=maybe-uninitialized]
>     g_free (*pp);
>     ^~~~~~~~~~~~
> ../tests/plugin/syscall.c:73:27: note: ‘out’ was declared here
>           g_autofree gchar *out;
>                             ^~~
> cc1: all warnings being treated as errors
> 
> Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> Message-Id: <20211128011551.2115468-1-juro.bystricky@intel.com>
> ---
>   tests/plugin/syscall.c | 8 +++-----
>   1 file changed, 3 insertions(+), 5 deletions(-)


Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~


> 
> diff --git a/tests/plugin/syscall.c b/tests/plugin/syscall.c
> index 484b48de49..96040c578f 100644
> --- a/tests/plugin/syscall.c
> +++ b/tests/plugin/syscall.c
> @@ -70,19 +70,17 @@ static void vcpu_syscall_ret(qemu_plugin_id_t id, unsigned int vcpu_idx,
>           }
>           g_mutex_unlock(&lock);
>       } else {
> -        g_autofree gchar *out;
> -        out = g_strdup_printf("syscall #%" PRIi64 " returned -> %" PRIi64 "\n",
> -                num, ret);
> +        g_autofree gchar *out = g_strdup_printf(
> +             "syscall #%" PRIi64 " returned -> %" PRIi64 "\n", num, ret);
>           qemu_plugin_outs(out);
>       }
>   }
>   
>   static void print_entry(gpointer val, gpointer user_data)
>   {
> -    g_autofree gchar *out;
>       SyscallStats *entry = (SyscallStats *) val;
>       int64_t syscall_num = entry->num;
> -    out = g_strdup_printf(
> +    g_autofree gchar *out = g_strdup_printf(
>           "%-13" PRIi64 "%-6" PRIi64 " %" PRIi64 "\n",
>           syscall_num, entry->calls, entry->errors);
>       qemu_plugin_outs(out);
>
diff mbox series

Patch

diff --git a/tests/plugin/syscall.c b/tests/plugin/syscall.c
index 484b48de49..96040c578f 100644
--- a/tests/plugin/syscall.c
+++ b/tests/plugin/syscall.c
@@ -70,19 +70,17 @@  static void vcpu_syscall_ret(qemu_plugin_id_t id, unsigned int vcpu_idx,
         }
         g_mutex_unlock(&lock);
     } else {
-        g_autofree gchar *out;
-        out = g_strdup_printf("syscall #%" PRIi64 " returned -> %" PRIi64 "\n",
-                num, ret);
+        g_autofree gchar *out = g_strdup_printf(
+             "syscall #%" PRIi64 " returned -> %" PRIi64 "\n", num, ret);
         qemu_plugin_outs(out);
     }
 }
 
 static void print_entry(gpointer val, gpointer user_data)
 {
-    g_autofree gchar *out;
     SyscallStats *entry = (SyscallStats *) val;
     int64_t syscall_num = entry->num;
-    out = g_strdup_printf(
+    g_autofree gchar *out = g_strdup_printf(
         "%-13" PRIi64 "%-6" PRIi64 " %" PRIi64 "\n",
         syscall_num, entry->calls, entry->errors);
     qemu_plugin_outs(out);