From 88803a1250c63493150b28ebdbc6f34d2a17e96b Mon Sep 17 00:00:00 2001
From: Walter Bright <walter@walterbright.com>
Date: Tue, 16 Apr 2024 11:35:29 -0700
Subject: [PATCH] compile druntime with -preview=dip1021

---
 druntime/Makefile        | 2 +-
 druntime/test/common.mak | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/druntime/Makefile b/druntime/Makefile
index 5aac2b73ef81..cab532df6224 100644
--- a/druntime/Makefile
+++ b/druntime/Makefile
@@ -101,7 +101,7 @@ ifeq (osx,$(OS))
 endif
 
 # Set DFLAGS
-UDFLAGS:=-conf= -Isrc -Iimport -w -de -preview=dip1000 -preview=fieldwise $(MODEL_FLAG) $(PIC) $(OPTIONAL_COVERAGE) -preview=dtorfields
+UDFLAGS:=-conf= -Isrc -Iimport -w -de -preview=dip1000 -preview=dip1021 -preview=fieldwise $(MODEL_FLAG) $(PIC) $(OPTIONAL_COVERAGE) -preview=dtorfields
 ifeq ($(BUILD),debug)
 	UDFLAGS += -g -debug
 	DFLAGS:=$(UDFLAGS)
diff --git a/druntime/test/common.mak b/druntime/test/common.mak
index 50b66acbb351..0938c3074a03 100644
--- a/druntime/test/common.mak
+++ b/druntime/test/common.mak
@@ -27,7 +27,7 @@ CFLAGS_BASE:=$(if $(findstring $(OS),windows),/Wall,$(MODEL_FLAG) $(PIC) -Wall)
 ifeq (osx64,$(OS)$(MODEL))
     CFLAGS_BASE+=--target=x86_64-darwin-apple  # ARM cpu is not supported by dmd
 endif
-DFLAGS:=$(MODEL_FLAG) $(PIC) -w -I../../src -I../../import -I$(SRC) -defaultlib= -preview=dip1000 $(if $(findstring $(OS),windows),,-L-lpthread -L-lm $(LINKDL))
+DFLAGS:=$(MODEL_FLAG) $(PIC) -w -I../../src -I../../import -I$(SRC) -defaultlib= -preview=dip1000 -preview=dip1021 $(if $(findstring $(OS),windows),,-L-lpthread -L-lm $(LINKDL))
 # LINK_SHARED may be set by importing makefile
 DFLAGS+=$(if $(LINK_SHARED),-L$(DRUNTIME_IMPLIB) $(if $(findstring $(OS),windows),-dllimport=all),-L$(DRUNTIME))
 ifeq ($(BUILD),debug)