MZ390E String index out of range

[abekornelis]

Reported by Lin Lyons; email dd 2025-01-18 22:12

*
         LA    R1,1(R1)
         CLC   CARD+A(1),0(R1)
         BE    GOTEND
         BCT   R0,*-14
CARDERR  ERR   'LONG PARAM'
--
         CLI   CARD,C'C'      C'ABCD',DD=DDNAM,

caused ....

0002C7 (1/200)189 * MZ390E abort 84 file=1 line=200 internal system exception - java.lang.StringIndexOutOfBoundsException: String index out of range: 0
AZ390E error 165 (1/200)189 * MZ390E abort 84 file=1 line=200 internal system exception - java.lang.StringIndexOutOfBoundsException: String index out of range: 0
AZ390I input truncated due to mz390 abort

Lin suspects the problem is caused by the line starting wih two dashes.

[abekornelis]

I've requested Lin to supply complete source in order to more easily reproduce the issue.