[LLVMbugs] [Bug 17864] New: Bogus "fallthrough annotation does not directly precede switch label" warning when [[clang::fallthrough]] is used in lambda

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17864

            Bug ID: 17864
           Summary: Bogus "fallthrough annotation does not directly
                    precede switch label" warning when
                    [[clang::fallthrough]] is used in lambda
           Product: clang
           Version: 3.3
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: arcata at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This code incorrectly warns that the [[clang::falltrhrough]] annotation does
not precede a switch label:

void foo(int x) {
  [&]{
    switch (x) {
    case 0:
      foo(0);
      [[clang::fallthrough]];
    case 1:
      foo(1);
    }
  }();
}

Remove the lambda [&]{ }() and the warning goes away.

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