[RFC v2 2/9] qapi/error: add (Error **errp) cleaning APIs

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 include/qapi/error.h | 22 ++++++++++++++++++++++
 util/error.c         |  6 +++---
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/include/qapi/error.h b/include/qapi/error.h
index f6f4fa0fac..551385aa91 100644
--- a/include/qapi/error.h
+++ b/include/qapi/error.h
@@ -297,6 +297,28 @@ void warn_report_err(Error *err);
  */
 void error_report_err(Error *err);
 
+/*
+ * Functions to clean Error **errp: call corresponding Error *err cleaning
+ * function an set pointer to NULL
+ */
+static inline void error_free_errp(Error **errp)
+{
+    error_free(*errp_in);
+    *errp_in = NULL;
+}
+
+static inline void error_report_errp(Error **errp)
+{
+    error_report_err(*errp_in);
+    *errp_in = NULL;
+}
+
+static inline void warn_report_errp(Error **errp)
+{
+    warn_report_err(*errp_in);
+    *errp_in = NULL;
+}
+
 /*
  * Convenience function to error_prepend(), warn_report() and free @err.
  */
diff --git a/util/error.c b/util/error.c
index d4532ce318..dfba091757 100644
--- a/util/error.c
+++ b/util/error.c
@@ -273,9 +273,9 @@ void error_free(Error *err)
 
 void error_free_or_abort(Error **errp)
 {
-    assert(errp && *errp);
-    error_free(*errp);
-    *errp = NULL;
+    assert(errp_in && *errp_in);
+    error_free(*errp_in);
+    *errp_in = NULL;
 }
 
 void error_propagate(Error **dst_errp, Error *local_err)
-- 
2.21.0