[llvm-bugs] [Bug 25551] New: almost all calls to LookupSingleName are wrong

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25551

            Bug ID: 25551
           Summary: almost all calls to LookupSingleName are wrong
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

LookupSingleName does something very odd: if lookup finds an overload set of
functions, it acts exactly like lookup found nothing. This results in almost
every single caller of this function doing the wrong thing in that case
(ranging from misdiagnosing problems to accepting invalid code). Example:

  int m();             enum { m }; // error
  int n(); int n(int); enum { n }; // accepted!

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