1 files changed, 8 insertions, 5 deletions
diff --git a/stubs/error-printf.c b/stubs/error-printf.c
index 99c6406668..1f9d3b3714 100644
--- a/stubs/error-printf.c
+++ b/stubs/error-printf.c
@@ -2,19 +2,22 @@
 #include "qemu-common.h"
 #include "qemu/error-report.h"
 
-void error_vprintf(const char *fmt, va_list ap)
+int error_vprintf(const char *fmt, va_list ap)
 {
+    int ret;
+
     if (g_test_initialized() && !g_test_subprocess() &&
         getenv("QTEST_SILENT_ERRORS")) {
         char *msg = g_strdup_vprintf(fmt, ap);
         g_test_message("%s", msg);
+        ret = strlen(msg);
         g_free(msg);
-    } else {
-        vfprintf(stderr, fmt, ap);
+        return ret;
     }
+    return vfprintf(stderr, fmt, ap);
 }
 
-void error_vprintf_unless_qmp(const char *fmt, va_list ap)
+int error_vprintf_unless_qmp(const char *fmt, va_list ap)
 {
-    error_vprintf(fmt, ap);
+    return error_vprintf(fmt, ap);
 }