cdaac01490
Reasoning: The `fbounds-safety` compiler extension reported out-of-bounds accesses on the `buf` member of the `VP8BitWriter` struct (defined in `src/utils/bit_writer_utils.h`, line 36). These occurred in `src/utils/bit_writer_utils.c` at lines 70, 74, 76, and 189, where `buf` was used with array indexing or pointer arithmetic despite being a `__single` pointer by default. To fix this, the `buf` member was annotated as `__sized_by_or_null(max_pos)` in `src/utils/bit_writer_utils.h` (line 36), associating it with the `max_pos` member which stores the buffer size. This annotation introduced a new build error in the `BitWriterResize` function (`src/utils/bit_writer_utils.c`, line 55) when assigning the result of `WebPSafeMalloc` (an `__unsafe_indexable` pointer) to the now-annotated `bw->buf`. This was resolved by: 1. Using `bw->buf = __unsafe_forge_bidi_indexable(uint8_t*, new_buf, new_size);` (line 55) to create a properly bounded pointer from the `malloc` result (`new_buf`) using its size (`new_size`) before assigning it to `bw->buf`. Bug: 432511821 Change-Id: I1a24a9a432388ccce53a5e9b3b5e58d22aa61d0c
WebP Codec
__ __ ____ ____ ____
/ \\/ \/ _ \/ _ )/ _ \
\ / __/ _ \ __/
\__\__/\____/\_____/__/ ____ ___
/ _/ / \ \ / _ \/ _/
/ \_/ / / \ \ __/ \__
\____/____/\_____/_____/____/v1.6.0
WebP codec is a library to encode and decode images in WebP format. This package contains the library that can be used in other programs to add WebP support, as well as the command line tools 'cwebp' and 'dwebp' to compress and decompress images respectively.
See https://developers.google.com/speed/webp for details on the image format.
The latest source tree is available at https://chromium.googlesource.com/webm/libwebp
It is released under the same license as the WebM project. See https://www.webmproject.org/license/software/ or the "COPYING" file for details. An additional intellectual property rights grant can be found in the file PATENTS.
Building
See the building documentation.
Encoding and Decoding Tools
The examples/ directory contains tools to encode and decode images and animations, view information about WebP images, and more. See the tools documentation.
APIs
See the APIs documentation, and API usage examples in the
examples/ directory.
Bugs
Please report all bugs to the issue tracker. For security reports, select 'Security report' from the Template dropdown.
Patches welcome! See how to contribute.
Discuss
Email: webp-discuss@webmproject.org
Web: https://groups.google.com/a/webmproject.org/group/webp-discuss