☜	Error Code M75 M[UMPS] by Example					☞

M75, String length exceeds implementation’s limit

Approved for inclusion in a future M[UMPS] language standard.

For portability, the length of strings is limited. The 1977 ANSI M[UMPS] language standard limited this length to 255 characters, in a future M[UMPS] language standard, this limit will be raised to:

• 510 characters for namevalues
• 32,767 characters for values in local variables
• 510 characters for values in global variables
• 32,767 characters for values in structured system variables

Implementations may offer longer strings than the portability limit.

If an implementation attempts to create a string that is longer than the string length limit for the implementation in question, this error will occur.

This error will not occur for any string that has a length greater than the portability limit, but less that the limit of the implementation.

Set X="",$ETrap="GOTO ERROR"
 Write !,"This should work with the 1977 standard"
 For I=1:1:255 Set X=X_$Char(I#26+65)
 Do SHOW
 Write !,"The next code-line is not portable with"
 Write !,"the 1990 standard, but is"
 Write !,"portable with the 1995 standard."
 For I=256:1:510 Set X=X_$Char(I#26+65)
 Do SHOW
 Write !,"The next code-line is not portable with"
 Write !,"the 1995 standard, but is"
 Write !,"portable with the proposed millennium standard."
 For I=511:1:32767 Set X=X_$Char(I#26+65)
 Do SHOW
 Write !,"The following remains non-portable:"
 For I=1:1 Set X=X_$Char(I#26+65)
 ; The above line will cause error M75 to occur
 ;
SHOW Write !,"Now ",$LENGTH(X)," characters."
 Quit
 ;
ERROR Do SHOW Set $ETrap="" Quit

Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 14-Nov-2023, 21:43:26.

For comments, contact Ed de Moel (demoel@jacquardsystems.com)