[PATCH] D155574: [clang][ASTImporter] Fix import of recursive field initializer.

[Ding Fei via Phabricator via cfe-commits]

danix800 added inline comments.


================
Comment at: clang/lib/AST/ASTImporter.cpp:3936-3937
+    return std::move(Err);
+  if (ToInitializer)
+    ToField->setInClassInitializer(ToInitializer);
   return ToField;
----------------
Initializer could indirectly depends on this field and set the initializer while importing.
`setInClassInitializer()` asserts that initializer should not be set more than once:

```
        static int ref_A();
        static int ref_B();
        struct A {
          int a = ref_B();
        };
        struct B {
          int b = ref_A();
        };
        int ref_B() { B b; return b.b; }
        int ref_A() { A a; return a.a; }
```


Repository:
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  https://reviews.llvm.org/D155574/new/

https://reviews.llvm.org/D155574