[Qemu-devel] [PATCH 1/3] qmp-event: Avoid qobject_from_jsonf("%"PRId64)

[Eric Blake <eblake@redhat.com>]

The qobject_from_jsonf() function implements a pseudo-printf
language for creating a QObject; however, it is hard-coded to
only parse a subset of formats understood by printf().  In
particular, any use of a 64-bit integer works only if the
system's definition of PRId64 matches what the parser expects;
which works on glibc (%lld) and mingw (%I64d), but not on
Mac OS (%qd).  Rather than enhance the parser, it is just as
easy to open-code the few callers that were relying on this
particular conversion.

Reported by: G 3 <programmingkidx@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 qapi/qmp-event.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/qapi/qmp-event.c b/qapi/qmp-event.c
index 8bba165..26e10a1 100644
--- a/qapi/qmp-event.c
+++ b/qapi/qmp-event.c
@@ -16,6 +16,8 @@
 #include "qemu-common.h"
 #include "qapi/qmp-event.h"
 #include "qapi/qmp/qstring.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qint.h"
 #include "qapi/qmp/qjson.h"

 static QMPEventFuncEmit qmp_emit;
@@ -33,7 +35,7 @@ QMPEventFuncEmit qmp_event_get_func_emit(void)
 static void timestamp_put(QDict *qdict)
 {
     int err;
-    QObject *obj;
+    QDict *stamp;
     qemu_timeval tv;
     int64_t sec, usec;

@@ -47,10 +49,10 @@ static void timestamp_put(QDict *qdict)
         usec = tv.tv_usec;
     }

-    obj = qobject_from_jsonf("{ 'seconds': %" PRId64 ", "
-                             "'microseconds': %" PRId64 " }",
-                             sec, usec);
-    qdict_put_obj(qdict, "timestamp", obj);
+    stamp = qdict_new();
+    qdict_put(stamp, "seconds", qint_from_int(sec));
+    qdict_put(stamp, "microseconds", qint_from_int(usec));
+    qdict_put(qdict, "timestamp", stamp);
 }

 /*
-- 
2.7.4