1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 86cdca1572..0cd9716ac9 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -528,7 +528,8 @@ void raw_fd_ostream::write_impl(const char *Ptr, size_t Size) {
     } else {
       // Use ::writev() where available.
 #if defined(HAVE_WRITEV)
-      struct iovec IOV = { (void*) Ptr, Size };
+      const void *Addr = static_cast<const void *>(Ptr);
+      struct iovec IOV = {const_cast<void *>(Addr), Size };
       ret = ::writev(FD, &IOV, 1);
 #else
       ret = ::write(FD, Ptr, Size);