diff options
Diffstat (limited to 'objectivec/GPBMessage.m')
| -rw-r--r-- | objectivec/GPBMessage.m | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/objectivec/GPBMessage.m b/objectivec/GPBMessage.m index 90485bd1..3be20b67 100644 --- a/objectivec/GPBMessage.m +++ b/objectivec/GPBMessage.m @@ -969,7 +969,8 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) { newValue = [value copyWithZone:zone]; } } else { - if (field.mapKeyDataType == GPBDataTypeString) { + if ((field.mapKeyDataType == GPBDataTypeString) && + GPBFieldDataTypeIsObject(field)) { // NSDictionary newValue = [value mutableCopyWithZone:zone]; } else { |