From 6b4c5b81da314ff29adcf341ba80faff00fa1bb0 Mon Sep 17 00:00:00 2001
From: Aaron Hill <aa1ronham@gmail.com>
Date: Mon, 8 Apr 2019 23:18:10 -0400
Subject: [PATCH] Fix 'RtlGenRandom' argument slots

---
 src/fn_call.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fn_call.rs b/src/fn_call.rs
index 94e1f11ccf79..8a586c7705b3 100644
--- a/src/fn_call.rs
+++ b/src/fn_call.rs
@@ -756,8 +756,8 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
             }
             // The actual name of 'RtlGenRandom'
             "SystemFunction036" => {
-                let ptr = this.read_scalar(args[1])?.to_ptr()?;
-                let len = this.read_scalar(args[2])?.to_usize(this)?;
+                let ptr = this.read_scalar(args[0])?.to_ptr()?;
+                let len = this.read_scalar(args[1])?.to_usize(this)?;
 
                 let data = gen_random(this, len as usize)?;
                 this.memory_mut().get_mut(ptr.alloc_id)?