src/java.base/share/classes/java/util/jar/Attributes.java

*** 375,385 ****
          byte[] lastline = null;
  
          int len;
          while ((len = is.readLine(lbuf)) != -1) {
              boolean lineContinued = false;
!             if (lbuf[--len] != '\n') {
                  throw new IOException("line too long");
              }
              if (len > 0 && lbuf[len-1] == '\r') {
                  --len;
              }
--- 375,386 ----
          byte[] lastline = null;
  
          int len;
          while ((len = is.readLine(lbuf)) != -1) {
              boolean lineContinued = false;
!             byte b;
!             if ((b = lbuf[--len]) != '\n' && b != '\r') {
                  throw new IOException("line too long");
              }
              if (len > 0 && lbuf[len-1] == '\r') {
                  --len;
              }