Kbase P129730: Nested IF functions can return wrong datatype
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
20/03/2008 |
|
Status: Unverified
FACT(s) (Environment):
Progress 9.x
OpenEdge 10.x
All Supported Operating Systems
SYMPTOM(s):
Using nested IF functions
Return value for IF determined by dynamic references (ie: DYNAMIC-FUNCTION, buffer-field:BUFFER-VALUE)
IF function does not return the datatype of the dynamic reference
One of the following occurs:
Value returned gets converted to different datatype
Runtime error occurs related to incompatible datatypes
CAUSE:
This is a known issue.
The datatype returned by the IF function will be determined at compile time, and the datatype returned is based on the datatypes of the expressions used.
The compiler can not determine the datatype for dynamic references and will ignore such references when determining the required datatype to return.
As a result issues occur if the datatype of the dynamic reference allows a wider range of values than the datatypes the compiler is aware of.
FIX:
Workaround:
Wrap the dynamic reference in a cast function for the appropriate datatype.