gdb.info: struct timeval

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struct timeval

The buffer of type struct timeval used by the target and GDB is defined
as follows:
     struct timeval {
         time_t tv_sec;  /* second */
         long   tv_usec; /* microsecond */
     };
   The integral datatypes are conforming to the definitions given in the
approriate section (see *Note Integral datatypes::, for details) so this
structure is of size 8 bytes.