[PATCH] D123141: [clang][DOC] Document module mangler changes
Nathan Sidwell via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Wed Apr 6 11:13:55 PDT 2022
This revision was automatically updated to reflect the committed changes.
Closed by commit rG482fad4a3fcb: [clang][DOC] Document module mangler changes (authored by urnathan).
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@@ -201,6 +201,13 @@
- Implemented `__builtin_source_location()` which enables library support for std::source_location.
+- The mangling scheme for C++20 modules has incompatibly changed. The
+ initial mangling was discovered not to be reversible, and the weak
+ ownership design decision did not give the backwards compatibility
+ that was hoped for. C++20 since added ``extern "C++"`` semantics
+ that can be used for such compatibility. The demangler now demangles
+ symbols with named module attachment.
C++2b Feature Support
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