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authorMarkus Armbruster <armbru@redhat.com>2019-09-14 17:34:58 +0200
committerMarkus Armbruster <armbru@redhat.com>2019-09-24 14:07:23 +0200
commitc2c7065e1752a3be1b437d1ea359cde35d28ee3b (patch)
tree309fd28ba39f32c26ebaaf9ca0b06852a5c67f2d
parent887a2069f76fa99b9755467126dd171a9bad34a3 (diff)
qapi: Reject blank 'if' conditions in addition to empty ones
"'if': 'COND'" generates "#if COND". We reject empty COND because it won't compile. Blank COND won't compile any better, so reject that, too. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190914153506.2151-12-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
-rw-r--r--scripts/qapi/common.py5
-rw-r--r--tests/qapi-schema/bad-if-list.err2
-rw-r--r--tests/qapi-schema/bad-if-list.json2
3 files changed, 5 insertions, 4 deletions
diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
index a58e904978..2b46164854 100644
--- a/scripts/qapi/common.py
+++ b/scripts/qapi/common.py
@@ -742,8 +742,9 @@ def check_if(expr, info):
if not isinstance(ifcond, str):
raise QAPISemError(
info, "'if' condition must be a string or a list of strings")
- if ifcond == '':
- raise QAPISemError(info, "'if' condition '' makes no sense")
+ if ifcond.strip() == '':
+ raise QAPISemError(info, "'if' condition '%s' makes no sense"
+ % ifcond)
ifcond = expr.get('if')
if ifcond is None:
diff --git a/tests/qapi-schema/bad-if-list.err b/tests/qapi-schema/bad-if-list.err
index 0af6316f78..53af099083 100644
--- a/tests/qapi-schema/bad-if-list.err
+++ b/tests/qapi-schema/bad-if-list.err
@@ -1 +1 @@
-tests/qapi-schema/bad-if-list.json:2: 'if' condition '' makes no sense
+tests/qapi-schema/bad-if-list.json:2: 'if' condition ' ' makes no sense
diff --git a/tests/qapi-schema/bad-if-list.json b/tests/qapi-schema/bad-if-list.json
index 49ced9b9ca..ea3d95bb6b 100644
--- a/tests/qapi-schema/bad-if-list.json
+++ b/tests/qapi-schema/bad-if-list.json
@@ -1,3 +1,3 @@
# check invalid 'if' content
{ 'struct': 'TestIfStruct', 'data': { 'foo': 'int' },
- 'if': ['foo', ''] }
+ 'if': ['foo', ' '] }