Segmentation fault when assigning to a parenthesized non-tuple expression of a tuple type

[Subway2023]

Environment

• Compiler version: 0.8.25
• Target EVM version (as per compiler settings): None
• Framework/IDE (e.g. Truffle or Remix): None
• EVM execution environment / backend / blockchain client: Command
• Operating system: Linux

Steps to Reproduce

contract A {
    function f ( ) internal virtual {
        ( ( f() ) -= f() ) [ f() ] ;
    }
}

Segmentation fault

[r0qs]

Hi @Subway2023 thanks for opening the issue. We are indeed incorrectly detecting assignments to empty tuple expressions. I opened a PR to fix it ;)

A simpler reproduction of the bug would be:

contract C {
    function f() {
        (f()) = ();
    }
}