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[Qemu-devel] [PATCH RFC v3 14/20] qapi: Drop useless 'data' member of un
From: |
Eric Blake |
Subject: |
[Qemu-devel] [PATCH RFC v3 14/20] qapi: Drop useless 'data' member of unions |
Date: |
Tue, 18 Aug 2015 09:05:12 -0700 |
Now that we no longer have any clients of the 'void *data'
member injected into unions, we can drop it. Update the
testsuite to prove that we no longer have a name collision.
Signed-off-by: Eric Blake <address@hidden>
---
scripts/qapi-types.py | 9 ---------
tests/qapi-schema/qapi-schema-test.json | 2 +-
tests/qapi-schema/qapi-schema-test.out | 4 ++--
3 files changed, 3 insertions(+), 12 deletions(-)
diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index b0785a5..8f92b38 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -106,17 +106,8 @@ struct %(c_name)s {
''',
c_type=c_name(variants.tag_member.type.name))
- # FIXME: What purpose does data serve, besides preventing a union that
- # has a branch named 'data'? We use it in qapi-visit.py to decide
- # whether to bypass the switch statement if visiting the discriminator
- # failed; but since we 0-initialize structs, and cannot tell what
- # branch of the union is in use if the discriminator is invalid, there
- # should not be any data leaks even without a data pointer. Or, if
- # 'data' is merely added to guarantee we don't have an empty union,
- # shouldn't we enforce that at .json parse time?
ret += mcgen('''
union { /* union tag is @%(c_name)s */
- void *data;
''',
c_name=c_name((variants.tag_member and
variants.tag_member.name) or 'type'))
diff --git a/tests/qapi-schema/qapi-schema-test.json
b/tests/qapi-schema/qapi-schema-test.json
index cfbe4dd..45143e3 100644
--- a/tests/qapi-schema/qapi-schema-test.json
+++ b/tests/qapi-schema/qapi-schema-test.json
@@ -81,7 +81,7 @@
'number': ['number'],
'boolean': ['bool'],
'string': ['str'],
- 'sizes': ['size'] } }
+ 'data': ['size'] } }
# testing commands
{ 'command': 'user_def_cmd', 'data': {} }
diff --git a/tests/qapi-schema/qapi-schema-test.out
b/tests/qapi-schema/qapi-schema-test.out
index f062a15..ce01fa7 100644
--- a/tests/qapi-schema/qapi-schema-test.out
+++ b/tests/qapi-schema/qapi-schema-test.out
@@ -119,8 +119,8 @@ object UserDefNativeListUnion
case number: :obj-numberList-wrapper
case boolean: :obj-boolList-wrapper
case string: :obj-strList-wrapper
- case sizes: :obj-sizeList-wrapper
-enum UserDefNativeListUnionKind ['integer', 's8', 's16', 's32', 's64', 'u8',
'u16', 'u32', 'u64', 'number', 'boolean', 'string', 'sizes']
+ case data: :obj-sizeList-wrapper
+enum UserDefNativeListUnionKind ['integer', 's8', 's16', 's32', 's64', 'u8',
'u16', 'u32', 'u64', 'number', 'boolean', 'string', 'data']
object UserDefOne
base UserDefZero
member string: str optional=False
--
2.4.3
- [Qemu-devel] [PATCH RFC v3 10/20] qapi: Add tests for empty unions, (continued)
- [Qemu-devel] [PATCH RFC v3 10/20] qapi: Add tests for empty unions, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 11/20] qapi: Rework deallocation of partial struct, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 04/20] qapi-visit: Remove redundant functions for flat union base, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 03/20] qapi: Unbox base members, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 02/20] vnc: hoist allocation of VncBasicInfo to callers, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 15/20] qapi: Remove dead visitor code, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 20/20] qapi: Support boxed unions, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 18/20] qapi: Plumb in 'box' to qapi generator lower levels, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 16/20] qapi: Document visitor interfaces, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 13/20] qapi: Forbid empty unions and useless alternates, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 14/20] qapi: Drop useless 'data' member of unions,
Eric Blake <=
- [Qemu-devel] [PATCH RFC v3 19/20] qapi: Implement boxed structs for commands/events, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 17/20] qapi: Change visit_type_XXX() to no longer return partial objects, Eric Blake, 2015/08/18
- [Qemu-devel] [PATCH RFC v3 12/20] qapi: Avoid use of 'data' member of qapi unions, Eric Blake, 2015/08/18