Changeset d40294 in git

Timestamp:

Jun 17, 2011, 9:47:28 AM (12 years ago)

Author:

Hans Schoenemann <hannes@…>

Branches:

(u'jengelh-datetime', 'ceac47cbc86fe4a15902392bdbb9bd2ae0ea02c6')(u'spielwiese', 'a800fe4b3e9d37a38c5a10cc0ae9dfa0c15a4ee6')

Children:

0777eaa5b4d2cac6ca8635f3d96e331a60032554

Parents:

2f128f2c3244812fa0ad92434c4ccb623b9c7b56

Message:

fix NULL deref.

git-svn-id: file:///usr/local/Singular/svn/trunk@14284 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• Singular/extra.cc (modified) (1 diff)

Singular/extra.cc

@@ -195 +195 @@
     for (int c = 0; c < n; c++)
     {
-      entry = p_GetCoeff(MATELEM(singularMatrix, r + 1, c + 1), currRing);
-      int entryAsInt = n_Int(entry, currRing);
-      if (entryAsInt < 0) entryAsInt += currRing->ch;
+      poly p=MATELEM(singularMatrix, r + 1, c + 1);
+      int entryAsInt;
+      if (p!=NULL)
+      {
+        entry = p_GetCoeff(p, currRing);
+        entryAsInt = n_Int(entry, currRing);
+        if (entryAsInt < 0) entryAsInt += currRing->ch;
+      }
+      else
+        entryAsInt=0;
       longMatrix[r][c] = (unsigned long)entryAsInt;
     }