[libcxx-commits] [libcxx] [libc++] Introduce ABI sensitive areas to avoid requiring _LIBCPP_HIDE_FROM_ABI everywhere (PR #131156)

[Louis Dionne via libcxx-commits]

================
@@ -559,6 +559,18 @@ typedef __char32_t char32_t;
 #  endif
 
 // clang-format off
+#  define _LIBCPP_BEGIN_HIDE_FROM_ABI                                                                                  \
+    _LIBCPP_DIAGNOSTIC_PUSH                                                                                            \
+    _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wpragma-clang-attribute")                                                       \
+    _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wignored-attributes")                                                           \
+    _Pragma(_LIBCPP_TOSTRING(clang attribute _LibcxxHideFromABI.push(__attribute__((                                   \
----------------
ldionne wrote:

```suggestion
    _Pragma(_LIBCPP_TOSTRING(clang attribute _LibcxxABIInsensitive.push(__attribute__((                                   \
```

https://github.com/llvm/llvm-project/pull/131156