[LLVMbugs] [Bug 20929] New: False positive from security.ReturnPtrRange on std::end(T(&array)[N])

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20929

            Bug ID: 20929
           Summary: False positive from security.ReturnPtrRange on
                    std::end(T(&array)[N])
           Product: clang
           Version: trunk
          Hardware: PC
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: Static Analyzer
          Assignee: kremenek at apple.com
          Reporter: j4cbo at dropbox.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

ReturnPtrRange doesn't like the past-the-end pointer returned by std::end:

#include <iterator>
void foo() {
    int arr[5] = {};
    std::end(arr);
}

which gets me a:

    warning: Returned pointer value points outside the original object
(potential buffer overflow) [clang-analyzer-alpha.security.ReturnPtrRange]

in the implementation of std::end(T(&array)[N]) ("return __array + _Np;")

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