Public bug reported:
libmng version: 2.0.2
In file libmng_pixels.c, there are many functions; those are performing
bit format conversion (8bit format to 16 bit, 16bit to 8bit etc.). For
format conversion function are doing logical ANDing with Constant that
is not logically correct.
e.g. At #15692: *(pDstline+1) = (mng_uint8)(iR && 0xFF);
In above example due to Logical ANDing(&&) in place of bitwise ANDing(&)
there is a loss of information stored in LSB’s of iR.
Now, Replaced logical ANDing operator (&&) with bitwise ANDing
operator(&)
After correction:
At #15692: *(pDstline+1) = (mng_uint8)(iR & 0xFF);
Many similar changes are applied in libmng_pixel.c, For detail
information please check the attached patch file.
** Affects: libmng (Ubuntu)
Importance: Undecided
Status: New
** Patch added: "libmng_pixels.patch"
https://bugs.launchpad.net/bugs/1472523/+attachment/4426207/+files/libmng_pixels.patch
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1472523
Title:
logical AND with Constant is not logically correct
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libmng/+bug/1472523/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
