constructor + subfield access - GETWA_NOT_ASSIGNED. ABAP kernel bug?

[Sandra_Rossi]

Maybe another ABAP kernel bug, not corrected yet?

With the code below, the DATA(name) = ... does a SHORT DUMP with GETWA_NOT_ASSIGNED. In some other situations, it may not fail but return a value which is at a different offset an with a different length !!

DATA(text) = 'hello'.
FIND ALL OCCURRENCES OF 'l' IN text RESULTS DATA(matches).
LOOP AT matches ASSIGNING FIELD-SYMBOL(<match>).
  DATA(name) = to_upper( CONV string( text+<match>-offset(<match>-length) ) ). " short dump
ENDLOOP.

It's due to the constructor expression combined with the subfield access. If I remove one of them, then it's okay.

It seems that subfield access/constructor expression is really a problem, because I also had another issue with COND (not CONV) inside a table comprehension. Moving it to a LET aux = str+off(len) had solved the issue, but I didn't see a note about that topic (only 1972833 was close but was for an old kernel 741).

Do you have the same issue, what is your ABAP version/kernel, do you know what SAP note/kernel solves?

My ABAP versions:

• ABAP 7.52 (7.5C) SP0 kernel 753 SP300.
• ABAP 7.52 SP1 kernel 753 SP16.

Thank you very much.

Sandra

[arthursilva]

Hello Sandra, hope you're well

The error happened because the interpretor cannot convert a static char into string (as you have done before). The field-symbol statement has the capablity to change a variable content dinamically (without using MODIFY statement, or any other...), so it's not possible to convert a char(5) to string(255) because a string value is to long for the table content.

I did a few changea on your code. Please test it again

DATA(text) = CONV string( 'hello' ).
FIND ALL OCCURRENCES OF 'l' IN text RESULTS DATA(matches) .
LOOP AT matches ASSIGNING FIELD-SYMBOL(<match>) .
*  DATA(name) = to_upper( CONV string( text+<match>-offset(<match>-length) ) ) . " short dump
  DATA(name) = to_upper( text+<match>-offset(<match>-length) ) . " no dump :)
ENDLOOP .

KR,
Arthur Silva

[Sandra_Rossi]

The ABAP runtime can "convert char into string". String is not 255 characters.

You may check this code, it works well:

data(v1) = 'Hello'.
data(v2) = to_upper( conv string( v1+2(1) ) ).

I expect more an answer about a patch for correcting the bug.

(or maybe I should contact the SAP support)

[Sandra_Rossi]

NOTE: the question is not about how to make the assignment work, the question is about what SAP note/kernel solves. And eventually could you run the code, say if it works and what is your ABAP version.

[arthursilva]

Sandra,

Did you try the code that I've sent ?

No field sympol, no error:

data(v1) = 'Hello'.
data(v2) = to_upper( conv string( v1+2(1) ) ).

With field-symbol: error:

DATA(name) = to_upper( CONV string( text+<match>-offset(<match>-length) ) ) .

Don't confuse the use of field-symbol with inline-declaration.

[matt]

What happens if you use substring instead?

[Sandra_Rossi]

Matthew Billingham I can't test now, but probably that would work. But that's not my question 😉

[former_member259807]

For what it is worth, it dumps here on SAP_ABA 750 SP9 as well.

[DoanManhQuynh]

its ok if i do like this:

DATA(text) = 'hello'.
DATA part.
FIND ALL OCCURRENCES OF 'l' IN text RESULTS DATA(matches).
LOOP AT matches ASSIGNING FIELD-SYMBOL(<match>).
  part = text+<match>-offset(<match>-length).
ENDLOOP.

but its syntax error if i do like this:

DATA(text) = 'hello'.
FIND ALL OCCURRENCES OF 'l' IN text RESULTS DATA(matches).
LOOP AT matches ASSIGNING FIELD-SYMBOL(<match>).
  DATA(part) = text+<match>-offset(<match>-length).
ENDLOOP.

if i separate the inline like this, there is no dump:

FIND ALL OCCURRENCES OF 'l' IN text RESULTS DATA(matches).
LOOP AT matches ASSIGNING FIELD-SYMBOL(<match>).
  DATA(conv) = CONV string( text+<match>-offset(<match>-length) ).
  DATA(name) = to_upper( conv ).
ENDLOOP.

mightbe its about generic type in inline declaration...

[matt]

sandra.rossi Oh yes, I know. But if you're going to use old-fashioned constructs... 😉

[Sandra_Rossi]

matthew.billingham let's discuss about substring/text+off(len) in this new question

[Sandra_Rossi]

For the record, I have posted an incident at SAP support. I will keep you informed.

(link for my own use: 258494 / 2019 constructor + subfield access -> short dump GETWA_NOT_ASSIGNED)

UPDATE 20190603: it's corrected by the SAP note 2791097 - ABAP Expressions with Offset/Length Access Yield Wrong Result

[Sandra_Rossi]

SAP answered they are about to correct the bug, and they'll issue a new SAP note... to be continued...