[LLVMbugs] [Bug 22255] New: Crash on implicit member access in initializer in dependent type

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22255

            Bug ID: 22255
           Summary: Crash on implicit member access in initializer in
                    dependent type
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This crashes:

template <class> void redundant_typename() {
  struct A {
    int pT = pT;
  };
};

void f() {
  redundant_typename<int>();
}


If the initializer is spelled `= this->pT;` instead, it works. That's because
the initializer is a CXXDependentScopeMemberExpr in that case, because
Sema::ActOnMemberAccessExpr() calls ActOnDependentMemberExpr() for dependent
members. Sema::BuildImplicitMemberExpr() doesn't do that -- adding code to do
that makes the crash go away, but I'm pretty unsure if that's the right fix.

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