[FB-Tracker] Created: (CORE-5526) External routines receives parameters with incorrect length or datatype

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[FB-Tracker] Created: (CORE-5526) External routines receives parameters with incorrect length or datatype

JIRA tracker@firebirdsql.org
External routines receives parameters with incorrect length or datatype
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                 Key: CORE-5526
                 URL: http://tracker.firebirdsql.org/browse/CORE-5526
             Project: Firebird Core
          Issue Type: Bug
          Components: API / Client Library, Engine
    Affects Versions: 3.0.2, 4.0 Initial
            Reporter: Adriano dos Santos Fernandes


- External routine is declared with CHAR(31) CHARACTER SET UTF8 parameter
- External code changes descriptor to VARCHAR(31) CHARACTER SET UTF8

Case 1:

- User calls the routine with a literal '123'
- External code receives a string with byte length 3 instead of 31

Case 2:

- User calls the routine with a parameter bind passing the value '123' as dtype_text
- External code receives a string with byte length 124 instead of 31

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