Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions).
Signed-off-by: Gustavo A. R. Silva <[email protected]> --- include/linux/firewire.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/firewire.h b/include/linux/firewire.h index dd9f2d765e68..00abe0e5d602 100644 --- a/include/linux/firewire.h +++ b/include/linux/firewire.h @@ -463,7 +463,8 @@ struct fw_iso_packet { u32 tag:2; /* tx: Tag in packet header */ u32 sy:4; /* tx: Sy in packet header */ u32 header_length:8; /* Length of immediate header */ - u32 header[]; /* tx: Top of 1394 isoch. data_block */ + /* tx: Top of 1394 isoch. data_block */ + u32 header[] __counted_by(header_length); }; #define FW_ISO_CONTEXT_TRANSMIT 0 -- 2.34.1
