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[Qemu-devel] [PULL 16/31] qapi-visit: Kill unused visit_end_union()
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PULL 16/31] qapi-visit: Kill unused visit_end_union() |
Date: |
Tue, 9 Feb 2016 12:37:48 +0100 |
From: Eric Blake <address@hidden>
The generated code can call visit_end_union() without having called
visit_start_union(). Example:
if (!*obj) {
goto out_obj;
}
visit_type_CpuInfoBase_fields(v, (CpuInfoBase **)obj, &err);
if (err) {
goto out_obj; // if we go from here...
}
if (!visit_start_union(v, !!(*obj)->u.data, &err) || err) {
goto out_obj;
}
switch ((*obj)->arch) {
[...]
}
out_obj:
// ... then *obj is true, and ...
error_propagate(errp, err);
err = NULL;
if (*obj) {
// we end up here
visit_end_union(v, !!(*obj)->u.data, &err);
}
error_propagate(errp, err);
Harmless only because no visitor implements end_union(). Clean it up
anyway, by deleting the function as useless.
Messed up since we have visit_end_union (commit cee2ded).
Signed-off-by: Markus Armbruster <address@hidden>
Message-Id: <address@hidden>
[expand scope of patch to delete rather than repair]
Signed-off-by: Eric Blake <address@hidden>
Message-Id: <address@hidden>
---
include/qapi/visitor-impl.h | 1 -
include/qapi/visitor.h | 1 -
qapi/qapi-visit-core.c | 8 +-------
scripts/qapi-visit.py | 5 -----
4 files changed, 1 insertion(+), 14 deletions(-)
diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h
index 44a21b7..f314894 100644
--- a/include/qapi/visitor-impl.h
+++ b/include/qapi/visitor-impl.h
@@ -58,7 +58,6 @@ struct Visitor
/* visit_type_size() falls back to (*type_uint64)() if type_size is unset
*/
void (*type_size)(Visitor *v, uint64_t *obj, const char *name, Error
**errp);
bool (*start_union)(Visitor *v, bool data_present, Error **errp);
- void (*end_union)(Visitor *v, bool data_present, Error **errp);
};
void input_type_enum(Visitor *v, int *obj, const char * const strings[],
diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h
index a14a16d..83ac3ad 100644
--- a/include/qapi/visitor.h
+++ b/include/qapi/visitor.h
@@ -70,6 +70,5 @@ void visit_type_str(Visitor *v, char **obj, const char *name,
Error **errp);
void visit_type_number(Visitor *v, double *obj, const char *name, Error
**errp);
void visit_type_any(Visitor *v, QObject **obj, const char *name, Error **errp);
bool visit_start_union(Visitor *v, bool data_present, Error **errp);
-void visit_end_union(Visitor *v, bool data_present, Error **errp);
#endif
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 8473d3c..060316b 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -1,6 +1,7 @@
/*
* Core Definitions for QAPI Visitor Classes
*
+ * Copyright (C) 2012-2016 Red Hat, Inc.
* Copyright IBM, Corp. 2011
*
* Authors:
@@ -67,13 +68,6 @@ bool visit_start_union(Visitor *v, bool data_present, Error
**errp)
return true;
}
-void visit_end_union(Visitor *v, bool data_present, Error **errp)
-{
- if (v->end_union) {
- v->end_union(v, data_present, errp);
- }
-}
-
bool visit_optional(Visitor *v, bool *present, const char *name)
{
if (v->optional) {
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index ec16e36..f98bb5f 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -320,11 +320,6 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj,
const char *name, Error
out_obj:
error_propagate(errp, err);
err = NULL;
- if (*obj) {
- visit_end_union(v, !!(*obj)->u.data, &err);
- }
- error_propagate(errp, err);
- err = NULL;
visit_end_struct(v, &err);
out:
error_propagate(errp, err);
--
2.4.3
- [Qemu-devel] [PULL 05/31] qobject: Document more shortcomings in our number handling, (continued)
- [Qemu-devel] [PULL 05/31] qobject: Document more shortcomings in our number handling, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 10/31] hmp: Drop pointless allocation during qapi visit, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 20/31] qapi: Don't cast Enum* to int*, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 26/31] qapi: Tighten qmp_input_end_list(), Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 30/31] qapi: Fix compilation failure on MIPS and SPARC, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 28/31] qmp: Fix reference-counting of qnull on empty output visit, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 29/31] qmp: Don't abuse stack to track qmp-output root, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 08/31] qapi: Dealloc visitor does not need a type_size(), Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 12/31] vl: Ensure qapi visitor properly ends struct visit, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 13/31] balloon: Improve use of qapi visitor, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 16/31] qapi-visit: Kill unused visit_end_union(),
Markus Armbruster <=
- [Qemu-devel] [PULL 14/31] qapi: Improve generated event use of qapi visitor, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 17/31] qapi: Prefer type_int64 over type_int in visitors, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 27/31] qapi: Drop unused error argument for list and implicit struct, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 25/31] qapi: Drop unused 'kind' for struct/enum visit, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 23/31] qom: Swap 'name' next to visitor in ObjectPropertyAccessor, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 04/31] tests: Use Python 2.6 "except E as ..." syntax, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 22/31] qapi: Swap visit_* arguments for consistent 'name' placement, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 15/31] qapi: Track all failures between visit_start/stop, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 11/31] hmp: Cache use of qapi visitor, Markus Armbruster, 2016/02/09
- [Qemu-devel] [PULL 21/31] qom: Use typedef for Visitor, Markus Armbruster, 2016/02/09