Unused return value of a function with lambda expression body

Reports calls with an unused return value when the called function returns a lambda from an expression body.

If there is = between function header and body block, code from the function will not be evaluated which can lead to incorrect behavior.

Remove = token from function declaration can be used to amend the code automatically.

Example:

fun printHello() = { println("Hello") }

fun main() {
    printHello() // This function doesn't print anything
}

After the quick-fix is applied:

fun printHello() { println("Hello") }

fun main() {
    printHello()
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023