// Minimal SSA Bug Reproduction
// Pattern: Conditional reassignment with immediate usage
// Expected: SSA violation "use of undefined value"

static box MinimalSSABug {
  main(args) {
    local x = "test"

    // Problem pattern: reassign + immediate use in nested condition
    if x.length() > 0 {
      x = x.substring(0, 2)            // reassign x
      if x.length() > 0 && x.substring(0, 1) == "t" {  // immediate use
        x = x.substring(1, 2)          // another reassign
        print(x)
      }
    }

    return 0
  }
}