 1 :  unknown type (null) in penter
 2 :  unknown type (null) in freetr
 3 :  regular expression too long
 4 :  unknown type (null) in cfoll
 5 :  unknown type (null) in first
 6 :  can't open (null)
 7 :  record `(null)...' too long
 8 :  record `(null)...' has too many fields
 9 :  record `(null)...' has too many fields
10 :  built giant record `(null)...'
11 :  trying to access field (null)
12 :  can't open (null)
13 :  out of space in ALLOC
14 :  illegal statement (null)
15 :  unexpected break, continue or next
16 :  unexpected break, continue or next
17 :  unknown boolean operator (null)
18 :  unknown relational operator (null)
19 :  out of temporaries in gettemp
20 :  format item (null)... too long
21 :  not enough arguments in printf((null))
22 :  illegal arithmetic operator (null)
23 :  division by zero
24 :  division by zero
25 :  division by zero
26 :  division by zero
27 :  illegal assignment operator (null)
28 :  (null) is not an array
29 :  illegal jump type (null)
30 :  illegal function type (null)
31 :  string (null) ... too long to print
32 :  too many output files (null)
33 :  can't open file (null)
34 :  out of space in makesymtab
35 :  symbol table overflow at (null)
36 :  can't set $0
37 :  can't set $0
38 :  illegal reference to array (null)
39 :  funny variable (null): (null) (null) (null) (null)
40 :  out of space in tostring on (null)
