https://github.com/llvmbot updated
https://github.com/llvm/llvm-project/pull/138880
>From 337beb73abfe05c2db1158f211042eb8763165ea Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklau...@berlin.de>
Date: Wed, 7 May 2025 16:09:40 +0200
Subject: [PATCH] [libc++] Add _LIBCPP_NO_UNIQUE_ADDRESS to
flat_{,multi}map::value_compare (#137594)
This breaks the ABI of `flat_{,multi}map::value_compare`, but this type
has only been introduced in LLVM 20, so it should be very unlikely that
we break anybody if we back-port this now.
(cherry picked from commit ed0aa9961caa177098e9b7e69e98034d676f192e)
---
libcxx/include/__flat_map/flat_map.h | 2 +-
libcxx/include/__flat_map/flat_multimap.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libcxx/include/__flat_map/flat_map.h
b/libcxx/include/__flat_map/flat_map.h
index a0594ed9dc411..9cc39c0a1e067 100644
--- a/libcxx/include/__flat_map/flat_map.h
+++ b/libcxx/include/__flat_map/flat_map.h
@@ -113,7 +113,7 @@ class flat_map {
class value_compare {
private:
- key_compare __comp_;
+ _LIBCPP_NO_UNIQUE_ADDRESS key_compare __comp_;
_LIBCPP_HIDE_FROM_ABI value_compare(key_compare __c) : __comp_(__c) {}
friend flat_map;
diff --git a/libcxx/include/__flat_map/flat_multimap.h
b/libcxx/include/__flat_map/flat_multimap.h
index ea77fb5d79bd2..15fcd7995ad0a 100644
--- a/libcxx/include/__flat_map/flat_multimap.h
+++ b/libcxx/include/__flat_map/flat_multimap.h
@@ -115,7 +115,7 @@ class flat_multimap {
class value_compare {
private:
- key_compare __comp_;
+ _LIBCPP_NO_UNIQUE_ADDRESS key_compare __comp_;
_LIBCPP_HIDE_FROM_ABI value_compare(key_compare __c) : __comp_(__c) {}
friend flat_multimap;
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