tools/fidl/fidlc/testdata/padding.test.fidl

library fidl.test.padding;

struct Padding1ByteEnd {
    uint16 a;
    uint8 b;
    // 1 byte padding
};

struct Padding2ByteEnd {
    uint32 a;
    uint16 b;
    // 2 byte padding
};

struct Padding3ByteEnd {
    uint32 a;
    uint8 b;
    // 3 byte padding
};

struct Padding4ByteEnd {
    uint64 a;
    uint32 b;
    // 4 byte padding
};

struct Padding5ByteEnd {
    uint64 a;
    uint16 b;
    uint8 c;
    // 5 byte padding
};

struct Padding6ByteEnd {
    uint64 a;
    uint16 b;
    // 6 byte padding
};

struct Padding7ByteEnd {
    uint64 a;
    uint8 b;
    // 7 byte padding
};

struct Padding1ByteMiddle {
    uint8 a;
    // 1 byte padding
    uint16 b;
};

struct Padding2ByteMiddle {
    uint16 a;
    // 2 byte padding
    uint32 b;
};

struct Padding3ByteMiddle {
    uint8 a;
    // 3 byte padding
    uint32 b;
};

struct Padding4ByteMiddle {
    uint32 a;
    // 4 byte padding
    uint64 b;
};

struct Padding5ByteMiddle {
    uint16 a;
    uint8 b;
    // 5 byte padding
    uint64 c;
};

struct Padding6ByteMiddle {
    uint16 a;
    // 6 byte padding
    uint64 b;
};

struct Padding7ByteMiddle {
    uint8 a;
    // 7 byte padding
    uint64 b;
};

// The following structs test generation of padding masks for bindings that use
// them. For example, for a 4-byte aligned struct with length 12, two masks
// might be generated to cover the length - an 8-byte and 4-byte mask.

struct Padding4ByteAlignmentLength12 {
    uint32 a;
    uint8 b;
    // 1 byte padding
    uint16 c;
    uint16 d;
    // 2 bytes padding
};

struct Padding2ByteAlignmentLength6 {
    // 4 byte padding mask starts here.
    uint8 a;
    // 1 byte padding
    uint16 b;
    // 2 byte padding mask starts here.
    uint8 c;
    // 1 byte padding
};