4.3BSD-UWisc/man/cat1/px.1

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PX(1)               UNIX Programmer's Manual                PX(1)



NAME
     px - Pascal interpreter

SYNOPSIS
     px [ obj [ argument ... ] ]

DESCRIPTION
     _P_x interprets the abstract machine code generated by _p_i. The
     first argument is the file to be interpreted, and defaults
     to _o_b_j; remaining arguments are available to the Pascal pro-
     gram using the built-ins _a_r_g_v and _a_r_g_c. _P_x is also invoked
     by _p_i_x when running `load and go'.

     If the program terminates abnormally an error message and a
     control flow backtrace are printed.  The number of state-
     ments executed and total execution time are printed after
     normal termination.  The p option of _p_i suppresses all of
     this except the message indicating the cause of abnormal
     termination.

FILES
     obj       default object file
     pmon.out  profile data file

SEE ALSO
     Berkeley Pascal User's Manual
     pi(1), pix(1)

DIAGNOSTICS
     Most run-time error messages are self-explanatory.  Some of
     the more unusual ones are:

     Reference to an inactive file
           A file other than _i_n_p_u_t or _o_u_t_p_u_t was used before a
           call to _r_e_s_e_t or _r_e_w_r_i_t_e.

     Statement count limit exceeded
           The limit of 500,000 executed statements (which
           prevents excessive looping or recursion) has been
           exceeded.

     Bad data found on integer read
     Bad data found on real read
           Usually, non-numeric input was found for a number.
           For reals, Pascal requires digits before and after the
           decimal point so that numbers like `.1' or `21.' evoke
           the second diagnostic.

     panic: _S_o_m_e _m_e_s_s_a_g_e
           Indicates an internal inconsistency detected in _p_x
           probably due to a Pascal system bug.




Printed 12/27/86          May 12, 1986                          1






PX(1)               UNIX Programmer's Manual                PX(1)



AUTHORS
     Charles B. Haley, William Joy, and Ken Thompson
     VAX-11 version by Kirk McKusick

BUGS
     Post-mortem traceback is not limited; infinite recursion
     leads to almost infinite traceback.
















































Printed 12/27/86          May 12, 1986                          2