[LLVMbugs] [Bug 14515] New: Clang++ does not implement _BitScanForward or _BitScanReverse intrinsics on Windows.

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Dec 5 01:39:09 PST 2012


             Bug #: 14515
           Summary: Clang++ does not implement _BitScanForward or
                    _BitScanReverse intrinsics on Windows.
           Product: clang
           Version: 3.1
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jujjyl at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

I ran against some code that uses the _BitScanForward and _BitScanReverse
intrinsics from the VC++ compiler:


The code is available at

Try building it with 'clang++ dlmalloc.cpp' It will fail on unresolved external
symbol issues. For more information, see this issue reported in another bug
tracker https://github.com/kripken/emscripten/issues/743

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