<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - MSVC build failure: _recalloc redefinition in rt_asan"
   href="https://llvm.org/bugs/show_bug.cgi?id=30329">30329</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>MSVC build failure: _recalloc redefinition in rt_asan
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows XP
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>HBBroeker@T-Online.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Git trunk source
CMake build with generator "MSVC 14 (Visual Studio 2015)"
Configuration "Debug", "Win32"
Build fails in subdir projects/compiler-rt/lib/asan,
target clang_rt.asan-dynamic-i386:

libucrt.lib(recalloc.obj) : error LNK2005: __recalloc already defined in
asan_malloc_win.obj
[C:\prg\llvm\bld_msvc\projects\compiler-rt\lib\asan\clang_rt.asan-dynamic-i386.vcxproj]
     Creating library
C:/prg/llvm/bld_msvc/Debug/lib/clang/4.0.0/lib/windows/clang_rt.asan_dynamic-i386.lib
and object
C:/prg/llvm/bld_msvc/Debug/lib/clang/4.0.0/lib/windows/clang_rt.asan_dynamic-i386.exp
C:\prg\llvm\bld_msvc\Debug\lib\clang\4.0.0\lib\windows\clang_rt.asan_dynamic-i386.dll
: fatal error LNK1169: one or more multiply defined symbols found
[C:\prg\llvm\bld_msvc\projects\compiler-rt\lib\asan\clang_rt.asan-dynamic-i386.vcxproj]
  Der Befehl wurde mit dem Code 1169 beendet.
Die Ausführung der Link-Aufgabe ist abgeschlossen -- FEHLER.
Die Erstellung des Ziels "Link" im Projekt "clang_rt.asan-dynamic-i386.vcxproj"
ist abgeschlossen -- FEHLER.

This definition in projects/compiler-rt/lib/asan/asan_malloc_win.cc::118

    void *_recalloc(void *p, size_t n, size_t elem_size) {

collides with an existing standard library function of MSVC (declared in
<corecrt_malloc.h>, defined by libucrt.dll).</pre>
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