Encode using blaum_roth segmentation fault.

[Zhonghui]

Encode using blaum_roth segmentation fault.
k=10, m=4, w=16.

====my patch====
diff -u ../Jerasure-master-ori/Jerasure-master/Examples/decoder.c Examples/decoder.c
--- ../Jerasure-master-ori/Jerasure-master/Examples/decoder.c 2011-11-27 07:24:10.000000000 +0800
+++ Examples/decoder.c 2013-02-04 10:54:34.375865798 +0800
@@ -229,7 +229,7 @@
bitmatrix = liberation_coding_bitmatrix(k, w);
break;
case Blaum_Roth:

•       bitmatrix = blaum_roth_coding_bitmatrix(k, w);
  

•       bitmatrix = blaum_roth_coding_bitmatrix(k, w, m);
      break;
  case Liber8tion:
      bitmatrix = liber8tion_coding_bitmatrix(k);
  

  diff -u ../Jerasure-master-ori/Jerasure-master/Examples/encoder.c Examples/encoder.c
  --- ../Jerasure-master-ori/Jerasure-master/Examples/encoder.c 2011-11-27 07:24:10.000000000 +0800
  +++ Examples/encoder.c 2013-02-04 10:51:58.887225000 +0800
  @@ -455,7 +455,7 @@
  schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
  break;
  case Blaum_Roth:

•       bitmatrix = blaum_roth_coding_bitmatrix(k, w);
  

•       bitmatrix = blaum_roth_coding_bitmatrix(k, w, m);
      schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
      break;
  case Liber8tion:
  

  diff -u ../Jerasure-master-ori/Jerasure-master/src/liberation.c src/liberation.c
  --- ../Jerasure-master-ori/Jerasure-master/src/liberation.c 2011-11-27 07:24:10.000000000 +0800
  +++ src/liberation.c 2013-02-04 10:53:04.594043000 +0800
  @@ -208,15 +208,15 @@
  return matrix;
  }

-int *blaum_roth_coding_bitmatrix(int k, int w)
+int *blaum_roth_coding_bitmatrix(int k, int w, int m0)
{
int *matrix, i, j, index, l, m, p;

if (k > w) return NULL ;

• matrix = talloc(int, 2_k_w*w);
• matrix = talloc(int, m0_k_w*w);
  if (matrix == NULL) return NULL;
• bzero(matrix, sizeof(int)_2_k_w_w);
• bzero(matrix, sizeof(int)_m0_k_w_w);

/* Set up identity matrices */

diff -u ../Jerasure-master-ori/Jerasure-master/src/liberation.h src/liberation.h
--- ../Jerasure-master-ori/Jerasure-master/src/liberation.h 2011-11-27 07:24:10.000000000 +0800
+++ src/liberation.h 2013-02-04 10:54:03.603866097 +0800
@@ -51,6 +51,6 @@

extern int *liberation_coding_bitmatrix(int k, int w);
extern int *liber8tion_coding_bitmatrix(int k);
-extern int *blaum_roth_coding_bitmatrix(int k, int w);
+extern int *blaum_roth_coding_bitmatrix(int k, int w, int m0);

#endif