From d7530c8f7bb14e860898c74aa6a20d86379c8822 Mon Sep 17 00:00:00 2001
From: William Sengir <william@sengir.com>
Date: Wed, 23 Mar 2022 08:44:11 -0700
Subject: [PATCH] stage2: make zero-sized array not cause recursive type
 definition

---
 src/Sema.zig            | 1 +
 test/behavior/array.zig | 3 ---
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/Sema.zig b/src/Sema.zig
index 17341850738e237a974494a1b171117c0afe5573..03a8a8905423d6ffef689321dbaa4c9ee3691673 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -20816,6 +20816,7 @@ pub fn resolveTypeLayout(
         .Struct => return sema.resolveStructLayout(block, src, ty),
         .Union => return sema.resolveUnionLayout(block, src, ty),
         .Array => {
+            if (ty.arrayLenIncludingSentinel() == 0) return;
             const elem_ty = ty.childType();
             return sema.resolveTypeLayout(block, src, elem_ty);
         },
diff --git a/test/behavior/array.zig b/test/behavior/array.zig
index bbaf3b3c34a05d1ef31967650fddb49b873784ce..7e55bb13c34a562814647189a168105c9cb13ef2 100644
--- a/test/behavior/array.zig
+++ b/test/behavior/array.zig
@@ -479,10 +479,7 @@ test "sentinel element count towards the ABI size calculation" {
 
 test "zero-sized array with recursive type definition" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
 
     const U = struct {
-- 
2.54.0