From f7366360383f6df430fb5dc7145f4ce8cab5f5e6 Mon Sep 17 00:00:00 2001
From: Christian Poveda <christianpoveda@protonmail.com>
Date: Tue, 17 Sep 2019 13:42:04 -0500
Subject: [PATCH] Throw unsupported error when alignment is not a power of two

---
 src/shims/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/shims/mod.rs b/src/shims/mod.rs
index eea23b6de4e6..0b5bd7ae5cf0 100644
--- a/src/shims/mod.rs
+++ b/src/shims/mod.rs
@@ -60,6 +60,11 @@ fn align_offset(
             this.pointer_size()
         )? as usize;
 
+        // FIXME: This should actually panic in the interpreted program
+        if !req_align.is_power_of_two() {
+            throw_unsup_format!("Required alignment should always be a power of two")
+        }
+
         let ptr_scalar = this.read_scalar(ptr_op)?.not_undef()?;
 
         if let Scalar::Ptr(ptr) = ptr_scalar {