1 files changed, 13 insertions, 4 deletions

diff --git a/CPP/7zip/Compress/PpmdZip.cpp b/CPP/7zip/Compress/PpmdZip.cpp
index 5039131..e59e52f 100644
--- a/CPP/7zip/Compress/PpmdZip.cpp
+++ b/CPP/7zip/Compress/PpmdZip.cpp
@@ -12,6 +12,15 @@
 namespace NCompress {
 namespace NPpmdZip {
 
+static const UInt32 kBufSize = 1 << 20;
+
+bool CBuf::Alloc()
+{
+  if (!Buf)
+    Buf = (Byte *)::MidAlloc(kBufSize);
+  return (Buf != NULL);
+}
+
 CDecoder::CDecoder(bool fullFileMode):
   _fullFileMode(fullFileMode)
 {
@@ -255,7 +264,10 @@ Z7_COM7F_IMF(CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream
   Ppmd8_Init(&_ppmd, (unsigned)_props.Order, (unsigned)_props.Restor);
 
   {
-    const UInt32 val = (UInt32)(((unsigned)_props.Order - 1) + ((_props.MemSizeMB - 1) << 4) + ((unsigned)_props.Restor << 12));
+    const unsigned val =
+           ((unsigned)_props.Order - 1)
+         + (((unsigned)_props.MemSizeMB - 1) << 4)
+         + ((unsigned)_props.Restor << 12);
     _outStream.WriteByte((Byte)(val & 0xFF));
     _outStream.WriteByte((Byte)(val >> 8));
   }
@@ -294,7 +306,4 @@ Z7_COM7F_IMF(CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream
   }
 }
 
-
-
-
 }}