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-rw-r--r--include/flatbuffers/flatbuffers.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/include/flatbuffers/flatbuffers.h b/include/flatbuffers/flatbuffers.h
index 279afd54..69c8d71b 100644
--- a/include/flatbuffers/flatbuffers.h
+++ b/include/flatbuffers/flatbuffers.h
@@ -2745,10 +2745,13 @@ inline const char * const *ElementaryTypeNames() {
// clang-format on
// Basic type info cost just 16bits per field!
+// We're explicitly defining the signedness since the signedness of integer
+// bitfields is otherwise implementation-defined and causes warnings on older
+// GCC compilers.
struct TypeCode {
- uint16_t base_type : 4; // ElementaryType
- uint16_t is_repeating : 1; // Either vector (in table) or array (in struct)
- int16_t sequence_ref : 11; // Index into type_refs below, or -1 for none.
+ unsigned short base_type : 4; // ElementaryType
+ unsigned short is_repeating : 1; // Either vector (in table) or array (in struct)
+ signed short sequence_ref : 11; // Index into type_refs below, or -1 for none.
};
static_assert(sizeof(TypeCode) == 2, "TypeCode");