PX(1)			  BSD General Commands Manual			 PX(1)

NAME
     px — Pascal interpreter

SYNOPSIS
     px [obj [argument ...]]

DESCRIPTION
     Px interprets the abstract machine code generated by pi(1).  The first
     argument is the file to be interpreted, and defaults to obj; remaining
     arguments are available to the Pascal program using the built-ins argv
     and argc.	Px is also invoked by pix when running `load and go'.

     If the program terminates abnormally an error message and a control flow
     backtrace are printed.  The number of statements executed and total exe‐
     cution time are printed after normal termination.	The p option of pi
     suppresses all of this except the message indicating the cause of abnor‐
     mal termination.

FILES
     obj       default object file
     pmon.out  profile data file

SEE ALSO
     pi(1), pix(1)

     Berkeley Pascal User's Manual.

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 input or output was used before a call to reset
	     or rewrite.

     Statement count limit exceeded
	     The limit of 500,000 executed statements (which prevents exces‐
	     sive 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: Some message
	     Indicates an internal inconsistency detected in px probably due
	     to a Pascal system bug.

HISTORY
     The Px comman appeared in 3.0BSD.

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

3rd Berkeley Distribution	August 7, 1991	     3rd Berkeley Distribution

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