From 7a59cd286345470412b4880ca576553c7d5827eb Mon Sep 17 00:00:00 2001
From: Jacob Young <jacobly0@users.noreply.github.com>
Date: Fri, 2 Jun 2023 05:07:07 -0400
Subject: Sema: hack around UAF

---
 src/Sema.zig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/Sema.zig')

diff --git a/src/Sema.zig b/src/Sema.zig
index 0ffd79bec3..8c657b3f52 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -26792,11 +26792,12 @@ fn coerceValueInMemory(
                     else => unreachable,
                 };
                 if (src_ty_child != dst_ty_child) break :direct;
+                // TODO: write something like getCoercedInts to avoid needing to dupe
                 return (try mod.intern(.{ .aggregate = .{
                     .ty = dst_ty.toIntern(),
                     .storage = switch (aggregate.storage) {
-                        .bytes => |bytes| .{ .bytes = bytes[0..dest_len] },
-                        .elems => |elems| .{ .elems = elems[0..dest_len] },
+                        .bytes => |bytes| .{ .bytes = try sema.arena.dupe(u8, bytes[0..dest_len]) },
+                        .elems => |elems| .{ .elems = try sema.arena.dupe(InternPool.Index, elems[0..dest_len]) },
                         .repeated_elem => |elem| .{ .repeated_elem = elem },
                     },
                 } })).toValue();
-- 
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