Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2020-07-07-v2' into staging

Error reporting patches patches for 2020-07-07

# gpg: Signature made Fri 10 Jul 2020 14:24:42 BST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-error-2020-07-07-v2: (53 commits)
  xen: Use ERRP_GUARD()
  nbd: Use ERRP_GUARD()
  virtio-9p: Use ERRP_GUARD()
  fw_cfg: Use ERRP_GUARD()
  pflash: Use ERRP_GUARD()
  sd: Use ERRP_GUARD()
  scripts: Coccinelle script to use ERRP_GUARD()
  error: New macro ERRP_GUARD()
  hmp: Ignore Error objects where the return value suffices
  qdev: Ignore Error objects where the return value suffices
  qemu-img: Ignore Error objects where the return value suffices
  error: Avoid error_propagate() after migrate_add_blocker()
  qapi: Purge error_propagate() from QAPI core
  qapi: Smooth visitor error checking in generated code
  qapi: Smooth another visitor error checking pattern
  block/parallels: Simplify parallels_open() after previous commit
  error: Reduce unnecessary error propagation
  error: Eliminate error_propagate() manually
  error: Eliminate error_propagate() with Coccinelle, part 2
  error: Eliminate error_propagate() with Coccinelle, part 1
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 18 insertions, 9 deletions

diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index 2239fc6417..ef283f2966 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -22,9 +22,10 @@ struct QapiDeallocVisitor
     Visitor visitor;
 };
 
-static void qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
+static bool qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
                                       size_t unused, Error **errp)
 {
+    return true;
 }
 
 static void qapi_dealloc_end_struct(Visitor *v, void **obj)
@@ -41,10 +42,11 @@ static void qapi_dealloc_end_alternate(Visitor *v, void **obj)
     }
 }
 
-static void qapi_dealloc_start_list(Visitor *v, const char *name,
+static bool qapi_dealloc_start_list(Visitor *v, const char *name,
                                     GenericList **list, size_t size,
                                     Error **errp)
 {
+    return true;
 }
 
 static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList *tail,
@@ -59,48 +61,55 @@ static void qapi_dealloc_end_list(Visitor *v, void **obj)
 {
 }
 
-static void qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
+static bool qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
                                   Error **errp)
 {
     if (obj) {
         g_free(*obj);
     }
+    return true;
 }
 
-static void qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
+static bool qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
                                     Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_uint64(Visitor *v, const char *name,
+static bool qapi_dealloc_type_uint64(Visitor *v, const char *name,
                                      uint64_t *obj, Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
+static bool qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
                                    Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
+static bool qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
                                      Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_anything(Visitor *v, const char *name,
+static bool qapi_dealloc_type_anything(Visitor *v, const char *name,
                                        QObject **obj, Error **errp)
 {
     if (obj) {
         qobject_unref(*obj);
     }
+    return true;
 }
 
-static void qapi_dealloc_type_null(Visitor *v, const char *name,
+static bool qapi_dealloc_type_null(Visitor *v, const char *name,
                                    QNull **obj, Error **errp)
 {
     if (obj) {
         qobject_unref(*obj);
     }
+    return true;
 }
 
 static void qapi_dealloc_free(Visitor *v)