================
@@ -31,7 +31,7 @@ inline llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
LoanID ID) {
struct AccessPath {
const clang::ValueDecl *D;
- AccessPath(const clang::ValueDecl *D) : D(D) {}
+ AccessPath(const clang::ValueDecl *D = nullptr) : D(D) {}
----------------
usx95 wrote:
> If the root of the access path is a `ParmVarDecl,` we know it was a
> placeholder loan
This is different from borrowing the `ParmVarDecl` itself. A place holder loan
is a loan held by the origin of ParmVarDecl and not a loan to the decl.
Example in `int* foo(int* p) { int**x = &p; }`, `&p` has a loan to `p` but
`p` itself would contain the placeholder loan. Another thing is that these
placeholder loans never expire(unlike other loans which expire when there
access path gets destructed)
https://github.com/llvm/llvm-project/pull/169767
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