[LLVMbugs] [Bug 18128] New: lambda-expressions with capture-default are allowed at namespace scope

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18128

            Bug ID: 18128
           Summary: lambda-expressions with capture-default are allowed at
                    namespace scope
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: accepts-invalid
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Clang incorrectly accepts this:

  auto l = [=]{};

Per C++1y [expr.lambda]p9 this is ill-formed: only local lambda expressions may
have capture-defaults (even if they don't actually capture anything).

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