inside Conversion methods, resolve extension wrong

[wangzaixiang]

Compiler version

3.1.2

Demo1 1

  given Conversion[ String, Int ] with
    def apply(from: String): Int = from.toInt   // the generate code is def apply(from:String:Int) = apply(from)

Output

The generated code is:

 public int apply(java.lang.String);
    Code:
       0: aload_0
       1: aload_1
       2: invokevirtual #34                 // Method apply:(Ljava/lang/String;)I, calls apply recusive, so will StackOverflow.
       5: ireturn

Demo2

object Demo2:
  def arr2list[T](arr: Array[T]): List[T] = arr.toList

  given [T]: Conversion[Array[T], List[T]] with
    def apply(arr: Array[T]): List[T] = arr2list(arr)

  def main(args: Array[String]): Unit = 
    val arr = Array(1,2,3)
    val list: List[Int] = arr
    println(s"list = ${list}")
  

The code still compiled to

object Demo2:
  def arr2list[T](arr: Array[T]): List[T] = given_Conversion_Array_List.apply(arr) // instead arr.toList

  given [T]: Conversion[Array[T], List[T]] with
    def apply(arr: Array[T]): List[T] = arr2list(arr)

so run the code will got the StackOverflow error.

[som-snytt]

Duplicates #10947 where there are links to duplicates, recursively.