[Bug 217783] New: Documentation: networking/can.rst contains incorrect definition for bcm_head_msg

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217783

            Bug ID: 217783
           Summary: Documentation: networking/can.rst contains incorrect
                    definition for bcm_head_msg
           Product: Documentation
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: man-pages
          Assignee: documentation_man-pages@kernel-bugs.osdl.org
          Reporter: kjeremy@gmail.com
        Regression: No

The documentation for bcm_msg_head is as follows in the doc:


struct bcm_msg_head {
        __u32 opcode;                   /* command */
        __u32 flags;                    /* special flags */
        __u32 count;                    /* run 'count' times with ival1 */
        struct timeval ival1, ival2;    /* count and subsequent interval */
        canid_t can_id;                 /* unique can_id for task */
        __u32 nframes;                  /* number of can_frames following */
        struct can_frame frames[0];
};


The last member is incorrect and should be `struct can_frame frames[];`.
This causes problems with documentation further down that suggests using a
super struct: 

struct {
        struct bcm_msg_head msg_head;
        struct canfd_frame frame[5];
} msg;

which is illegal in later GCC versions with C++

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