tests/plugin: prevent uninitialized warning

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>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200206093238.203984-1-kuhn.chenqun@huawei.com>
[AJB: uses Thomas's single line allocation]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200225124710.14152-13-alex.bennee@linaro.org>

diff --git a/tests/plugin/bb.c b/tests/plugin/bb.c
index f30bea08dccfcd502686d370421545e7d4f37f00..df19fd359df3536d2eb9e4bf4dd22bdf30a0c812 100644 (file)
--- a/tests/plugin/bb.c
+++ b/tests/plugin/bb.c
@@ -22,9 +22,9 @@ static bool do_inline;
 
 static void plugin_exit(qemu_plugin_id_t id, void *p)
 {
-    g_autofree gchar *out;
-    out = g_strdup_printf("bb's: %" PRIu64", insns: %" PRIu64 "\n",
-                          bb_count, insn_count);
+    g_autofree gchar *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 0a8f5a0000edfe6423260bff680d7343f3fd75e0..a9a6e412373961efe1a7a46de6f8a79a6fede11b 100644 (file)
--- a/tests/plugin/insn.c
+++ b/tests/plugin/insn.c
@@ -44,8 +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;
-    out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
+    g_autofree gchar *out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
     qemu_plugin_outs(out);
 }