RFR (XS) 8011048 - reading from unmapped memory in UTF8::as_quoted_ascii()

[Ioi Lam]

Please review a very small fix:

http://cr.openjdk.java.net/~iklam/8011048/utf8_read_past_end_001/ 
<http://cr.openjdk.java.net/%7Eiklam/8011048/utf8_read_past_end_001/>

Bug: Possible reading from unmapped memory in UTF8::as_quoted_ascii()

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8011048
https://jbs.oracle.com/bugs/browse/JDK-8011048

Summary of fix:

     The old code would read 1 byte past the end of the buffer with the
     "while (*p != '\0')" loop, because the UTF8 string embedded in a Symbol
     is not 0-terminated.

     The fix is to add a utf8_length parameter to UTF8::as_quoted_ascii().

Tests:

     JPRT
     UTE (vm.runtime.testlist, vm.quick.testlist, 
vm.parallel_class_loading.testlist)

Thanks
- Ioi
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/attachments/20130331/8c23be19/attachment.html