Fix ZSTD_execSequence() edge case

2016-10-12 10:05:26 -07:00
parent f405b8acbe
commit 7158584399
5 changed files with 25 additions and 0 deletions
@@ -3107,8 +3107,13 @@ static size_t ZSTD_execSequence(BYTE* op,
            op = oLitEnd + length1;
            sequence.matchLength -= length1;
            match = base;
+            if (op > oend_8) {
+              memmove(op, match, sequence.matchLength);
+              return sequenceLength;
+            }
        }
    }
+    /* Requirement: op <= oend_8 */

    /* match within prefix */
    if (sequence.offset < 8)