From 0051cd12e22d03b5442df98d82d9b8a586362082 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Mon, 16 Aug 2021 16:30:49 +0100
Subject: [PATCH] Make flags atomic for `Entity` and `Type`

---
 src/check_expr.cpp | 2 +-
 src/entity.cpp     | 4 ++--
 src/types.cpp      | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index e0eb5a954..581021ac7 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -923,7 +923,7 @@ bool is_polymorphic_type_assignable(CheckerContext *c, Type *poly, Type *source,
 					poly->kind = Type_EnumeratedArray;
 					poly->cached_size  = -1;
 					poly->cached_align = -1;
-					poly->flags        = source->flags;
+					poly->flags.exchange(source->flags);
 					poly->failure      = false;
 					poly->EnumeratedArray.elem      = source->EnumeratedArray.elem;
 					poly->EnumeratedArray.index     = source->EnumeratedArray.index;
diff --git a/src/entity.cpp b/src/entity.cpp
index e7b888365..fb65bc3a8 100644
--- a/src/entity.cpp
+++ b/src/entity.cpp
@@ -115,8 +115,8 @@ enum ProcedureOptimizationMode : u32 {
 struct Entity {
 	EntityKind  kind;
 	u64         id;
-	u64         flags;
-	EntityState state;
+	std::atomic<u64>         flags;
+	std::atomic<EntityState> state;
 	Token       token;
 	Scope *     scope;
 	Type *      type;
diff --git a/src/types.cpp b/src/types.cpp
index f497e9509..fd5bdbc6d 100644
--- a/src/types.cpp
+++ b/src/types.cpp
@@ -306,9 +306,9 @@ struct Type {
 	};
 
 	// NOTE(bill): These need to be at the end to not affect the unionized data
-	i64  cached_size;
-	i64  cached_align;
-	u32  flags; // TypeFlag
+	std::atomic<i64> cached_size;
+	std::atomic<i64> cached_align;
+	std::atomic<u32> flags; // TypeFlag
 	bool failure;
 };