[libcxx-commits] [libcxx] [libc++] Remove _LIBCPP_HAS_SIZED_DEALLOCATION (PR #172285)

[Nico Weber via libcxx-commits]

================
@@ -13,7 +13,6 @@
 #include <__cstddef/max_align_t.h>
 #include <__cstddef/size_t.h>
 #include <__new/align_val_t.h>
-#include <__new/global_new_delete.h> // for _LIBCPP_HAS_SIZED_DEALLOCATION
----------------
nico wrote:

Here's a standalone (but not terribly reduced) repro:

[repro.tar.gz](https://github.com/user-attachments/files/26093401/repro.tar.gz)

It'll unzip to standalone-repro/. Then:

```
cd standalone-build
cd out/build/ 
CLANG=/Users/thakis/src/llvm-project/out/gn/bin/clang++  ./build.sh
```

This will get you the error I pasted above.

The repro contains no Chrome-specific code, it's just libc++ code, and a debian sysroot.

If you edit ../../out/build/gen/third_party/libc++/src/include/__new/allocate.h and add `#include <__new/global_new_delete.h> // for _LIBCPP_HAS_SIZED_DEALLOCATION` back, then the same command will compile without problems.

https://github.com/llvm/llvm-project/pull/172285