message: Use rip-relative addressing in asm test
  The absolute form is an error when targeting Darwin.
diff: @@ -18,7 +18,7 @@ asm_main:
  # install tramp as return address
  # (similar to signal return trampolines on some platforms)
  - leaq tramp, %rax
  + leaq tramp(%rip), %rax
  pushq %rax
  jmp bar # call, with return address pointing to tramp
  