stack underflow

Classification

Validator	Validator version	Error message type
Ghostscript	10.06.0

File format	Version	Specification	Description	Location
application/pdf	1.4		Govdocs1 set	OPF format-corpus
application/pdf	1.6		Govdocs1 set	OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus

Analyses

Possible solutions

Output example

warning: ignoring zlib error: incorrect data check
warning: ignoring zlib error: incorrect data check
warning: ignoring zlib error: incorrect data check

The following errors were encountered at least once while processing this file:
        missing white space after number
        malformed number
        integer overflowed
        unbalanced or unescaped character '(' in string
        error executing PDF token
        xref table was repaired
        A closing mark (] or >>) had no matching mark, ignoring the closing mark
        Incorrect /Length for stream object

   **** This file had errors that were repaired or ignored.
   **** The file was produced by:
   **** >>>> Acrobat Distiller 5.0 (Windows) <<<<
   **** Please notify the author of the software that produced this
   **** file that it does not conform to Adobe's published PDF
   **** specification.


GPL Ghostscript 10.06.0 (2025-09-09)
Copyright (C) 2025 Artifex Software, Inc.  All rights reserved.
This software is supplied under the GNU AGPLv3 and comes with NO WARRANTY:
see the file COPYING for details.
Processing pages 1 through 20.
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
Page 16
Page 17
Page 18
Page 19
Page 20

The following warnings were encountered at least once while processing this file:
        garbage left on stack
        stack underflow
        text operator outside text block
        number uses illegal exponent form
        Possible missing white space between operators

Notes on the error

Related errors by source files

Ghostscript:    A closing mark (] or >>) had no matching mark, ignoring the closing mark
Ghostscript:    A page ended after a BT had been executed and without a mtching ET
Ghostscript:    BT found inside a text block
Ghostscript:    Couldn't find a named resource
Ghostscript:    encountered more q than Q
Ghostscript:    encountered more Q than q
Ghostscript:    error executing PDF token
Ghostscript:    ET found outside text block
Ghostscript:    garbage left on stack
Ghostscript:    ignoring zlib error: incorrect data check
Ghostscript:    Incorrect /Length for stream object
Ghostscript:    integer overflowed
Ghostscript:    Invalid number format: scientific notation
Ghostscript:    invalid operator used in text block
Ghostscript:    malformed number
Ghostscript:    missing white space after number
Ghostscript:    non standard operator found - ignoring
Ghostscript:    number uses illegal exponent form
Ghostscript:    Possible missing white space between operators
Ghostscript:    recoverable image error
Ghostscript:    stack underflow
Ghostscript:    startxref offset invalid
Ghostscript:    text operator outside text block
Ghostscript:    unbalanced or unescaped character '(' in string
Ghostscript:    xref table was repaired
JHOVE:  Improperly nested dictionary delimiters
JHOVE:  Invalid object definition
JHOVE:  No document catalog dictionary

Notice: any operation suggested on this page should be carefully considered before use, as this article is in continuous development.