Hi Goetz,

Thanks for the cleanup; looks fine with or without the suggestion below.

src/jdk.crypto.ec/share/native/libsunec/impl/ecl_mult.c: 84, 89
   Since the assignment is done in both branches of the if, it could be moved up.

Regards, Roger


On 7/13/2018 6:54 AM, Lindenmaier, Goetz wrote:
Hi,

I ran coverity on the jdk11 jdk sources and want to propose the following 
fixes. I scanned the linux x86_64 build. Some issues are similar to previous 
parfait fixes (check for NULL). I also identified some issues I consider real 
problems.  If you think some are tooo conservative, I'm happy to remove them.
I posted this to core-libs-dev and awt-dev, if you think this should
be discussed on other lists please tell me.

http://cr.openjdk.java.net/~goetz/wr18/8207233-covJDK/01/

In detail:

Real issues:
  ------------

  transport.c
    Loop overruns the array, it iterates to 8. Only
    two iterations are intended.

  Unix.c
    getgroups can return -1. This is handled below,
    but not here. Return as for other errors.

  Useful code improvements.
  -------------------------

  zip_util.c
    pmsg is compared to null above. Thus, don't
    dereference it unconditionally below.
    I would assume pmsg is always != NULL, so that the
    check above could as well be turned into a guarantee.
    This fix is more safe, though.

  fontpath.c
    This is a real error, but harmless as the same size is
    returned.

  pcsc.c
    If size is 0, mszReaders is not allocated, but accessed
    below. return if size is 0.
    Here, too, I would assume that one could turn the if(size)
    check into a guarantee, but this way it's more safe.

  ecl_muilt.c
    This block calls point_mul, which requires the kt.flag
    is initialized.

  unpack.cpp
    lo is checked for null. If it is null, the dereference
    below fails.
    Return if lo == Null similar as above.
    Alternatively, one could turn the if (lo != null) check into
    a guarantee.

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