From b96872ef2f619de476fb79c0bb142ebdace62382 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Mon, 27 Jan 2020 17:45:29 -0500
Subject: [PATCH] `@bitCast` result location: fix passing invalid alignment

when the value has 0 bits
---
 src/ir.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ir.cpp b/src/ir.cpp
index d4a0cb39c9..94d39b8cb6 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -18525,10 +18525,11 @@ static IrInstGen *ir_resolve_result_raw(IrAnalyze *ira, IrInst *suspend_source_i
                 return ira->codegen->invalid_inst_gen;
             }
 
-            uint64_t parent_ptr_align = get_ptr_align(ira->codegen, parent_ptr_type);
             if ((err = type_resolve(ira->codegen, value_type, ResolveStatusAlignmentKnown))) {
                 return ira->codegen->invalid_inst_gen;
             }
+            uint64_t parent_ptr_align = 0;
+            if (type_has_bits(value_type)) parent_ptr_align = get_ptr_align(ira->codegen, parent_ptr_type);
             ZigType *ptr_type = get_pointer_to_type_extra(ira->codegen, value_type,
                     parent_ptr_type->data.pointer.is_const, parent_ptr_type->data.pointer.is_volatile, PtrLenSingle,
                     parent_ptr_align, 0, 0, parent_ptr_type->data.pointer.allow_zero);