From 9b4a52916472f39a0a9e6d0807240e304a9e9ca6 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Tue, 5 Nov 2019 12:36:39 -0500
Subject: [PATCH] fix initialization of vector in a struct field

---
 src/ir.cpp                      |  2 +-
 test/stage1/behavior/vector.zig | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/ir.cpp b/src/ir.cpp
index 0c75fe7c19..d4687e5adb 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -17640,7 +17640,7 @@ static IrInstruction *ir_analyze_instruction_elem_ptr(IrAnalyze *ira, IrInstruct
                 return ira->codegen->invalid_instruction;
 
             if (array_ptr_val->special == ConstValSpecialUndef && elem_ptr_instruction->init_array_type != nullptr) {
-                if (array_type->id == ZigTypeIdArray) {
+                if (array_type->id == ZigTypeIdArray || array_type->id == ZigTypeIdVector) {
                     array_ptr_val->data.x_array.special = ConstArraySpecialNone;
                     array_ptr_val->data.x_array.data.s_none.elements = create_const_vals(array_type->data.array.len);
                     array_ptr_val->special = ConstValSpecialStatic;
diff --git a/test/stage1/behavior/vector.zig b/test/stage1/behavior/vector.zig
index d7dc7b5763..f747f7c184 100644
--- a/test/stage1/behavior/vector.zig
+++ b/test/stage1/behavior/vector.zig
@@ -234,3 +234,19 @@ test "store vector elements via runtime index" {
     S.doTheTest();
     comptime S.doTheTest();
 }
+
+test "initialize vector which is a struct field" {
+    const Vec4Obj = struct {
+        data: @Vector(4, f32),
+    };
+
+    const S = struct {
+        fn doTheTest() void {
+            var foo = Vec4Obj{
+                .data = [_]f32{ 1, 2, 3, 4 },
+            };
+        }
+    };
+    S.doTheTest();
+    comptime S.doTheTest();
+}