When you run the FCMP procedure under the following conditions, an error occurs:

• You use an IN operator.
• A variable on the right side is uninitialized.
• The variable types on the left side and on the right side are different (for example, one side has numeric variables and the other has character variables).

Here is the error that you receive:

This issue occurs because the type conversion is handled incorrectly. When a variable on the right side is uninitialized, its type is set to match the type of the left-side variable. If the left-side variable is numeric and the right-side variable is a character variable, then the types do not match. Then, when the IN operator is evaluated, literals in the IN list are incorrectly set to numeric rather than being reset to character. 

Here is an example. In the following program, if DEBQ is uninitialized, the type mismatch occurs. The mismatch occurs because X is numeric and DEBQ should be character. However, DEBQ is set to numeric even though the IN list contains all character types.

Then, when the program is run, the log contains messages similar to the following:

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Operating System and Release Information

A fix for this issue for SAS Compiler and Symbolic Differentiator 9.44 is available at:

A fix for this issue for SAS Thread-safe Compiler and Symbolic Differentiator 9.45 is available at: