[GROOVY-8648] Compound assignment to attribute fails with ASM error

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.14, 2.5.0
• Fix Version/s: 3.0.0-rc-3
• Component/s: class generator
• Assignee: Eric Milles
• Reporter: John Wagenleitner
• Created: 16/Jun/18 18:33
• Updated: 27/Jan/20 00:44
• Resolved: 25/Nov/19 19:02

Description

The following will fail with 2.4.14 and above.

class Account {
    int balance = 0
    void credit(int add) {
        this.@balance += add
    }
}

def acct = new Account()
acct.credit(3)
assert acct.balance == 3

Fails with the following in 2.5.0

groovy.lang.GroovyRuntimeException: ASM reporting processing error for Account#credit with signature void credit(int)

And this starting in 2.4.14

java.lang.VerifyError: (class: Account, method: credit signature: (I)V) Unable to pop operand off an empty stack

Possibly related to the fixes for GROOVY-8385 and the operand stack not being marked to handle the compound assignment operators.

Issue reported on the dev mailing list.