A flat union's tag member gets renamed to 'kind' in the generated
code. Breaks when another member named 'kind' exists.
Example, adapted from qapi-schema-test.json:
{ 'struct': 'UserDefUnionBase',
'data': { 'kind': 'str', 'enum1': 'EnumOne' } }
We generate:
struct UserDefFlatUnion
{
EnumOne kind;
union {
void *data;
UserDefA *value1;
UserDefB *value2;
UserDefB *value3;
};
char *kind;
};
Kill the silly rename.
Reported-by: Eric Blake <[email protected]>
Signed-off-by: Markus Armbruster <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
---
scripts/qapi-types.py | 3 ++-
scripts/qapi-visit.py | 7 +++++--
tests/test-qmp-input-visitor.c | 2 +-
tests/test-qmp-output-visitor.c | 2 +-
4 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 4902440..ac8dad3 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -200,11 +200,12 @@ def generate_union(expr, meta):
ret = mcgen('''
struct %(name)s
{
- %(discriminator_type_name)s kind;
+ %(discriminator_type_name)s %(discriminator)s;
union {
void *data;
''',
name=name,
+ discriminator=c_name(discriminator or 'kind'),
discriminator_type_name=c_name(discriminator_type_name))
for key in typeinfo:
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index e8ee268..4ec79a6 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -288,20 +288,23 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj,
const char *name, Error **e
name=c_name(name))
if not discriminator:
+ tag = 'kind'
disc_key = "type"
else:
+ tag = discriminator
disc_key = discriminator
ret += mcgen('''
- visit_type_%(disc_type)s(m, &(*obj)->kind, "%(disc_key)s", &err);
+ visit_type_%(disc_type)s(m, &(*obj)->%(c_tag)s, "%(disc_key)s", &err);
if (err) {
goto out_obj;
}
if (!visit_start_union(m, !!(*obj)->data, &err) || err) {
goto out_obj;
}
- switch ((*obj)->kind) {
+ switch ((*obj)->%(c_tag)s) {
''',
disc_type = disc_type,
+ c_tag=c_name(tag),
disc_key = disc_key)
for key in members:
diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c
index b961953..b7a87ee 100644
--- a/tests/test-qmp-input-visitor.c
+++ b/tests/test-qmp-input-visitor.c
@@ -313,7 +313,7 @@ static void test_visitor_in_union_flat(TestInputVisitorData
*data,
visit_type_UserDefFlatUnion(v, &tmp, NULL, &err);
g_assert(err == NULL);
- g_assert_cmpint(tmp->kind, ==, ENUM_ONE_VALUE1);
+ g_assert_cmpint(tmp->enum1, ==, ENUM_ONE_VALUE1);
g_assert_cmpstr(tmp->string, ==, "str");
/* TODO g_assert_cmpint(tmp->integer, ==, 41); */
g_assert_cmpint(tmp->value1->boolean, ==, true);
diff --git a/tests/test-qmp-output-visitor.c b/tests/test-qmp-output-visitor.c
index 87ba350..338ada0 100644
--- a/tests/test-qmp-output-visitor.c
+++ b/tests/test-qmp-output-visitor.c
@@ -437,7 +437,7 @@ static void
test_visitor_out_union_flat(TestOutputVisitorData *data,
Error *err = NULL;
UserDefFlatUnion *tmp = g_malloc0(sizeof(UserDefFlatUnion));
- tmp->kind = ENUM_ONE_VALUE1;
+ tmp->enum1 = ENUM_ONE_VALUE1;
tmp->string = g_strdup("str");
tmp->value1 = g_malloc0(sizeof(UserDefA));
/* TODO when generator bug is fixed: tmp->integer = 41; */
--
2.4.3
