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PROC FCMP allows a function to be defined with a character return value length of 32767 characters. Currently the resulting value is truncated to a value less than 32767 characters when the function created in PROC FCMP is called in the DATA Step. If you define the variable in PROC FCMP with the character return value of 32766 characters, the resulting value is correct when the function is called in the DATA Step. Also you may receive the following ERROR message in the SAS log when the function created by PROC FCMP is called in the DATA step:

   Internal ERROR: Character Temporary size not set

Here is an example to illustrate the problem:

   proc fcmp outlib = work.functions.string;
     function r32767(str $) $ 32767;
       String = "abcdefghijklmnopqrstuvwxyz" ; 
       return(String);
     endsub;
   run;
   
   options cmplib=(work.functions);

   data work.test1 ; 
     r3 = r32767('r3') ;
   run;

By changing the length on the FUNCTIONS statement after the $ in PROC FCMP from 32767 to 32766, you will receive the entire string.

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