diff options
| -rw-r--r-- | net/base/tcp_client_socket_win.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/base/tcp_client_socket_win.cc b/net/base/tcp_client_socket_win.cc index 11a6de3..1111d71 100644 --- a/net/base/tcp_client_socket_win.cc +++ b/net/base/tcp_client_socket_win.cc @@ -4,6 +4,7 @@ #include "net/base/tcp_client_socket.h" +#include "base/memory_debug.h" #include "base/string_util.h" #include "base/trace_event.h" #include "net/base/net_errors.h" @@ -175,6 +176,14 @@ int TCPClientSocket::Read(char* buf, BOOL ok = WSAResetEvent(overlapped_.hEvent); CHECK(ok); TRACE_EVENT_END("socket.read", this, StringPrintf("%d bytes", num)); + + // Because of how WSARecv fills memory when used asynchronously, Purify + // isn't able to detect that it's been initialized, so it scans for 0xcd + // in the buffer and reports UMRs (uninitialized memory reads) for those + // individual bytes. We override that in PURIFY builds to avoid the false + // error reports. + // See bug 5297. + base::MemoryDebug::MarkAsInitialized(buffer_.buf, num); return static_cast<int>(num); } int err = WSAGetLastError(); |