Changeset e50ae60d in ffmpeg

Timestamp:

May 20, 2014, 2:21:06 AM (11 years ago)

Author:

Michael Niedermayer <michaelni@gmx.at>

Branches:

master

Children:

6310eb80

Parents:

7d25af1

git-author:

Katerina Barone-Adesi <katerinab@gmail.com> (05/19/14 15:27:52)

git-committer:

Michael Niedermayer <michaelni@gmx.at> (05/20/14 02:21:06)

Message:

avcodec/fate-idct8x8: Defined behavior: eliminate negative left-shifts.

The original code left-shifts negative values, which is undefined
in the C99 specification (the one used during normal FFmpeg compilation).
This change multiplies by (1 << shift), which is functionally equivalent,
but has defined behavior.
With this change, fate-idct8x8 compiled with --fsanitize=undefined works.

Bug-Id: 686

Signed-off-by: Michael Niedermayer <​michaelni@gmx.at>

The assembly generated by gcc is unchanged by this commit

(No files)