[PATCH] Fix Bug 23189 in C++14 type inference for lambdas with undeclared identifiers

[Richard Smith]

================
Comment at: lib/Sema/SemaStmt.cpp:2983-2989
@@ -2982,9 +2982,9 @@
 
   if (FD->isDependentContext()) {
     // C++1y [dcl.spec.auto]p12:
     //   Return type deduction [...] occurs when the definition is
     //   instantiated even if the function body contains a return
     //   statement with a non-type-dependent operand.
     assert(AT->isDeduced() && "should have deduced to dependent type");
     return false;
   } else if (RetExpr) {
----------------
Dependent types are supposed to be eliminated by this check. I think the right thing to do is to correct typos in the expression before we get to this point.

http://reviews.llvm.org/D9880

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