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-rw-r--r--tests/qtest/npcm7xx_pwm-test.c3
-rw-r--r--tests/qtest/vhost-user-test.c7
-rw-r--r--tests/tcg/multiarch/overflow.c58
3 files changed, 64 insertions, 4 deletions
diff --git a/tests/qtest/npcm7xx_pwm-test.c b/tests/qtest/npcm7xx_pwm-test.c
index c4a5fdcacd..e320a625c4 100644
--- a/tests/qtest/npcm7xx_pwm-test.c
+++ b/tests/qtest/npcm7xx_pwm-test.c
@@ -268,6 +268,9 @@ static void mft_qom_set(QTestState *qts, int index, const char *name,
             path, name, value);
     /* The qom set message returns successfully. */
     g_assert_true(qdict_haskey(response, "return"));
+
+    qobject_unref(response);
+    g_free(path);
 }
 
 static uint32_t get_pll(uint32_t con)
diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c
index a2cec87684..8bf390be20 100644
--- a/tests/qtest/vhost-user-test.c
+++ b/tests/qtest/vhost-user-test.c
@@ -524,14 +524,13 @@ static void chr_event(void *opaque, QEMUChrEvent event)
 
 static void test_server_create_chr(TestServer *server, const gchar *opt)
 {
-    gchar *chr_path;
+    g_autofree gchar *chr_path = g_strdup_printf("unix:%s%s",
+                                                 server->socket_path, opt);
     Chardev *chr;
 
-    chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt);
     chr = qemu_chr_new(server->chr_name, chr_path, server->context);
-    g_free(chr_path);
+    g_assert(chr);
 
-    g_assert_nonnull(chr);
     qemu_chr_fe_init(&server->chr, chr, &error_abort);
     qemu_chr_fe_set_handlers(&server->chr, chr_can_read, chr_read,
                              chr_event, NULL, server, server->context, true);
diff --git a/tests/tcg/multiarch/overflow.c b/tests/tcg/multiarch/overflow.c
new file mode 100644
index 0000000000..1c59c2cb70
--- /dev/null
+++ b/tests/tcg/multiarch/overflow.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+
+int overflow_add_32(int x, int y)
+{
+    int res;
+    return __builtin_add_overflow(x, y, &res);
+}
+
+int overflow_add_64(long long x, long long y)
+{
+    long long res;
+    return __builtin_add_overflow(x, y, &res);
+}
+
+int overflow_sub_32(int x, int y)
+{
+    int res;
+    return __builtin_sub_overflow(x, y, &res);
+}
+
+int overflow_sub_64(long long x, long long y)
+{
+    long long res;
+    return __builtin_sub_overflow(x, y, &res);
+}
+
+int a1_add = -2147483648;
+int b1_add = -2147483648;
+long long a2_add = -9223372036854775808ULL;
+long long b2_add = -9223372036854775808ULL;
+
+int a1_sub;
+int b1_sub = -2147483648;
+long long a2_sub = 0L;
+long long b2_sub = -9223372036854775808ULL;
+
+int main()
+{
+    int ret = 0;
+
+    if (!overflow_add_32(a1_add, b1_add)) {
+        fprintf(stderr, "data overflow while adding 32 bits\n");
+        ret = 1;
+    }
+    if (!overflow_add_64(a2_add, b2_add)) {
+        fprintf(stderr, "data overflow while adding 64 bits\n");
+        ret = 1;
+    }
+    if (!overflow_sub_32(a1_sub, b1_sub)) {
+        fprintf(stderr, "data overflow while subtracting 32 bits\n");
+        ret = 1;
+    }
+    if (!overflow_sub_64(a2_sub, b2_sub)) {
+        fprintf(stderr, "data overflow while subtracting 64 bits\n");
+        ret = 1;
+    }
+    return ret;
+}