[compiler-rt] [compiler-rt][nfc] DenseMap needs placement new (PR #133329)

[Mircea Trofin via llvm-commits]

https://github.com/mtrofin created https://github.com/llvm/llvm-project/pull/133329

None

>From 89b6b7f41c2899a2de33ab983e903f8162c40508 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Thu, 27 Mar 2025 15:17:07 -0700
Subject: [PATCH] [compiler-rt][nfc] DenseMap needs placement new

---
 compiler-rt/lib/sanitizer_common/sanitizer_dense_map.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_dense_map.h b/compiler-rt/lib/sanitizer_common/sanitizer_dense_map.h
index c63788653de75..a704997e3a9be 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_dense_map.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_dense_map.h
@@ -19,6 +19,9 @@
 #include "sanitizer_common.h"
 #include "sanitizer_dense_map_info.h"
 #include "sanitizer_internal_defs.h"
+// Placement-new is needed for bucket allocation. This avoids needing to include
+// it everywhere we use DenseMap.
+#include "sanitizer_placement_new.h"
 #include "sanitizer_type_traits.h"
 
 namespace __sanitizer {