[llvm-branch-commits] [clang] release/20.x: [modules] Handle friend function that was a definition but became only a declaration during AST deserialization (#132214) (PR #134232)

[Dmitry Polukhin via llvm-branch-commits]

dmpolukhin wrote:

@nikic what do you mean by ABI change in this case? It doesn't change ABI of generated code, moreover it doesn't even change PCM serialized format because it is in memory only filed and attribute.

https://github.com/llvm/llvm-project/pull/134232