Fixed oneof case accessor to cast to enum for C++.

1 files changed, 1 insertions, 1 deletions

diff --git a/upbc/generator.cc b/upbc/generator.cc
index 2760069..5843597 100644
--- a/upbc/generator.cc
+++ b/upbc/generator.cc
@@ -362,7 +362,7 @@ void GenerateMessageInHeader(const protobuf::Descriptor* message, Output& output
         fullname);
     output(
         "UPB_INLINE $0_oneofcases $1_$2_case(const $1* msg) { "
-        "return UPB_FIELD_AT(msg, int, $3); }\n"
+        "return ($0_oneofcases)UPB_FIELD_AT(msg, int32_t, $3); }\n"
         "\n",
         fullname, msgname, oneof->name(),
         GetSizeInit(layout.GetOneofCaseOffset(oneof)));