From 24646b8b5d026a75deb5b3eace0e9142f0719da0 Mon Sep 17 00:00:00 2001
From: Veikka Tuominen <git@vexu.eu>
Date: Mon, 16 Jan 2023 14:46:50 +0200
Subject: windows x86_64 C ABI: pass byref structs as byref_mut

---
 src/codegen/llvm.zig | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/codegen/llvm.zig')

diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 05bc957bbb..abcb9b4060 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -10668,8 +10668,7 @@ const ParamTypeIterator = struct {
                             .memory => {
                                 it.zig_index += 1;
                                 it.llvm_index += 1;
-                                it.byval_attr = true;
-                                return .byref;
+                                return .byref_mut;
                             },
                             .sse => {
                                 it.zig_index += 1;
-- 
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