[unix-history] / usr / man / man1 / px.1

.TH PX 1 4/8/79
.UC
.SH NAME
px \- Pascal interpreter
.SH SYNOPSIS
.B px
[ obj [ argument ... ] ]
.SH DESCRIPTION
.I Px
interprets the abstract machine code generated by
.I pi.
The first argument is the file to be interpreted, and defaults
to
.IR obj \|;
remaining arguments are available to the Pascal program using the
built-ins
.I argv
and
.I argc.
.I Px
is also invoked by
.I pix
when running `load and go'.
.PP
If the program terminates abnormally an error message and a 
control flow backtrace are printed.
The number of statements executed and total execution time
are printed after normal termination.
The
.B p
option of
.I pi
suppresses all of this except the message indicating the cause
of abnormal termination.
.SH FILES
.DT
obj		default object file
.br
pmon.out	profile data file
.SH "SEE ALSO"
Berkeley Pascal User's Manual
.br
pi(1), pix(1)
.SH DIAGNOSTICS
Most run-time error messages are self-explanatory.
Some of the more unusual ones are:
.HP 6
Reference to an inactive file
.br
A file other than
.I input
or
.I output
was used before a call to
.I reset
or
.I rewrite.
.HP 6
Statement count limit exceeded
.br
The limit of 500,000 executed statements
(which prevents excessive looping or recursion)
has been exceeded.
.HP 6
Bad data found on integer read
.br
.ns
.HP 6
Bad data found on real read
.br
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.
.HP 6
panic:
.I  "Some message"
.br
Indicates a internal inconsistency detected in
.I px
probably due to a Pascal system bug.
.SH AUTHORS
Charles B. Haley, William Joy, and Ken Thompson
.br
VAX-11 version by Kirk McKusick
.SH BUGS
Post-mortem traceback is not limited;
infinite recursion leads to almost infinite traceback.
Commit	Line	Data
3b849d50 CH	1	.TH PX 1 4/8/79
	2	.UC
	3	.SH NAME
	4	px \- Pascal interpreter
	5	.SH SYNOPSIS
	6	.B px
	7	[ obj [ argument ... ] ]
	8	.SH DESCRIPTION
	9	.I Px
	10	interprets the abstract machine code generated by
	11	.I pi.
	12	The first argument is the file to be interpreted, and defaults
	13	to
	14	.IR obj \\|;
	15	remaining arguments are available to the Pascal program using the
	16	built-ins
	17	.I argv
	18	and
	19	.I argc.
	20	.I Px
	21	is also invoked by
	22	.I pix
	23	when running `load and go'.
	24	.PP
	25	If the program terminates abnormally an error message and a
	26	control flow backtrace are printed.
	27	The number of statements executed and total execution time
	28	are printed after normal termination.
	29	The
	30	.B p
	31	option of
	32	.I pi
	33	suppresses all of this except the message indicating the cause
	34	of abnormal termination.
	35	.SH FILES
	36	.DT
	37	obj default object file
	38	.br
	39	pmon.out profile data file
	40	.SH "SEE ALSO"
	41	Berkeley Pascal User's Manual
	42	.br
	43	pi(1), pix(1)
	44	.SH DIAGNOSTICS
	45	Most run-time error messages are self-explanatory.
	46	Some of the more unusual ones are:
	47	.HP 6
	48	Reference to an inactive file
	49	.br
	50	A file other than
	51	.I input
	52	or
	53	.I output
	54	was used before a call to
	55	.I reset
	56	or
	57	.I rewrite.
	58	.HP 6
	59	Statement count limit exceeded
	60	.br
	61	The limit of 500,000 executed statements
	62	(which prevents excessive looping or recursion)
	63	has been exceeded.
	64	.HP 6
65	Bad data found on integer read
66	.br
67	.ns
68	.HP 6
69	Bad data found on real read
70	.br
71	Usually, non-numeric input was found for a number.
72	For reals, Pascal requires digits before and after the decimal
73	point so that numbers like `.1' or `21.' evoke the second diagnostic.
74	.HP 6
75	panic:
76	.I "Some message"
77	.br
78	Indicates a internal inconsistency detected in
79	.I px
80	probably due to a Pascal system bug.
81	.SH AUTHORS
82	Charles B. Haley, William Joy, and Ken Thompson
83	.br
84	VAX-11 version by Kirk McKusick
85	.SH BUGS
86	Post-mortem traceback is not limited;
87	infinite recursion leads to almost infinite traceback.