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Appendix D. Errors

The following are the errors that can be signalled by the system.

Message Text | Example |  | Description
allocation error | `` |  | insufficient space in a memory-mapped boxed array
assertion failure | `` |  | `T` is not an array of all 1s in a control structure`` `assert. T`
attention interrupt | `` |  |
break | `` |  |
control error | `` |  | an ill-formed control structure; or the T block of a control structure does not result in a noun.
domain error | `3+'4'` |  |
file access error | `` |  | no permission to do a file operation
file name error | `1!:1 <'foojunkfoo'` |  | a named file does not exist
file number error | `` |  |
ill-formed name | `7!:5 <'bad name!'` |  | violates the rules for names as specified by Section I
ill-formed number | `1234 4q3` |  | violates the rules for numeric constants as specified by Section I and the discussion of Constants
index error | `19 { i.7` |  | a value used as an index is out of range | `` |  |
input interrupt | `` |  |
interface error | `` |  |
length error | `2 3 + 4 5 6` |  |
limit error | `i. 9e8` |  |
locale error | `` |  |
nonce error | `` |  | not yet implemented for the nonce
non-unique sparse elements | `($.i.4){i.4 2` |  | the sparse element of a sparse array must be an atom
open quote | `'don't do it'` |  | an input line contains an odd number of quotes in the non-comment text
out of memory | `` |  | out of memory; or memory limit exceeded, see`` `9!:20` and`9!:21`
rank error | `` |  |
read-only data | `` |  |
security violation | `` |  |
spelling error | `3 z: '4'` |  |
stack error | `` |  |
stop | `` |  |
syntax error | `)` |  | the result of a sentence is not a noun/verb/adverb/conjunction; a verb attempting to produce a verb/adverb/conjunction result
system error | `` |  | an “impossible” error (failure of an internal consistency check)
time limit | `` |  | execution time limit exceeded; see`` `9!:32` and`9!:33`
value error | `UninitializedName` |  | using an initialized name

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