From 64ec5c30ae732f33b52e6409d88c590adf4fa824 Mon Sep 17 00:00:00 2001
From: "Dongjia \"toka\" Zhang" <tokazerkje@outlook.com>
Date: Fri, 21 Oct 2022 16:23:30 +0900
Subject: [PATCH] Fix aarch64 read_time_counter() (#849)

* Revert #790 Changes

* fmt

* fix?
---
 libafl/src/bolts/cpu.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libafl/src/bolts/cpu.rs b/libafl/src/bolts/cpu.rs
index fbc4dfbf69..dc678a2fa0 100644
--- a/libafl/src/bolts/cpu.rs
+++ b/libafl/src/bolts/cpu.rs
@@ -36,10 +36,10 @@ pub fn read_time_counter() -> u64 {
 #[cfg(target_arch = "aarch64")]
 #[must_use]
 pub fn read_time_counter() -> u64 {
-    let v: u64 = 0;
+    let mut v: u64 = 0;
     unsafe {
         // TODO pushing a change in core::arch::aarch64 ?
-        asm!("mrs {v}, cntvct_el0", v = out(reg) _);
+        asm!("mrs {v}, cntvct_el0", v = out(reg) v);
     }
     v
 }