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| author | Eric Blake | 2015-10-26 23:35:02 +0100 |
|---|---|---|
| committer | Markus Armbruster | 2015-11-02 08:30:28 +0100 |
| commit | 5e59baf90a72cd25d38a3134edc029f4f022da74 (patch) | |
| tree | 392dbaed69ea07f8f5ad131bfb874c0bd80f5fba /tests/qapi-schema | |
| parent | qapi: Finish converting to new qapi union layout (diff) | |
| download | qemu-5e59baf90a72cd25d38a3134edc029f4f022da74.tar.gz qemu-5e59baf90a72cd25d38a3134edc029f4f022da74.tar.xz qemu-5e59baf90a72cd25d38a3134edc029f4f022da74.zip | |
qapi: Reserve 'u' member name
Now that we have separated union tag values from colliding with
non-variant C names, by naming the union 'u', we should reserve
this name for our use. Note that we want to forbid 'u' even in
a struct with no variants, because it is possible for a future
qemu release to extend QMP in a backwards-compatible manner while
converting from a struct to a flat union. Fortunately, no
existing clients were using this member name. If we ever find
the need for QMP to have a member 'u', we could at that time
relax things, perhaps by having c_name() munge the QMP member to
'q_u'.
Note that we cannot forbid 'u' everywhere (by adding the
rejection code to check_name()), because the existing QKeyCode
enum already uses it; therefore we only reserve it as a struct
type member name.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1445898903-12082-24-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'tests/qapi-schema')
| -rw-r--r-- | tests/qapi-schema/reserved-member-u.err | 1 | ||||
| -rw-r--r-- | tests/qapi-schema/reserved-member-u.exit | 1 | ||||
| -rw-r--r-- | tests/qapi-schema/reserved-member-u.json | 7 | ||||
| -rw-r--r-- | tests/qapi-schema/reserved-member-u.out | 0 |
4 files changed, 9 insertions, 0 deletions
diff --git a/tests/qapi-schema/reserved-member-u.err b/tests/qapi-schema/reserved-member-u.err new file mode 100644 index 0000000000..87d42296cc --- /dev/null +++ b/tests/qapi-schema/reserved-member-u.err @@ -0,0 +1 @@ +tests/qapi-schema/reserved-member-u.json:7: Member of 'data' for struct 'Oops' uses reserved name 'u' diff --git a/tests/qapi-schema/reserved-member-u.exit b/tests/qapi-schema/reserved-member-u.exit new file mode 100644 index 0000000000..d00491fd7e --- /dev/null +++ b/tests/qapi-schema/reserved-member-u.exit @@ -0,0 +1 @@ +1 diff --git a/tests/qapi-schema/reserved-member-u.json b/tests/qapi-schema/reserved-member-u.json new file mode 100644 index 0000000000..1eaf0f301c --- /dev/null +++ b/tests/qapi-schema/reserved-member-u.json @@ -0,0 +1,7 @@ +# Potential C member name collision +# We reject use of 'u' as a member name, to allow it for internal use in +# putting union branch members in a separate namespace from QMP members. +# This is true even for non-unions, because it is possible to convert a +# struct to flat union while remaining backwards compatible in QMP. +# TODO - we could munge the member name to 'q_u' to avoid the collision +{ 'struct': 'Oops', 'data': { 'u': 'str' } } diff --git a/tests/qapi-schema/reserved-member-u.out b/tests/qapi-schema/reserved-member-u.out new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/tests/qapi-schema/reserved-member-u.out |