tangyaofang comments

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                                            tangyaofang

improve libpng coverage on OSS-Fuzz

I want to know how to reproduce this problem , how libpng16/contrib/oss-fuzz should execute the test.

Memory Leak in png2pnm

@ctruta : The issue is: In the contrib\pngminus\png2pnm.c file, when the png_read_image (png_ptr, row_pointers) statement fails, the previously requested png_pixels row_pointers memory is not released. I think I have modified...

A potential heap overflow issue

I no found your bug. How did you compile and find this problem? ``` ./pngimage input input: error(libpng): original read: Not a PNG file ```

pngcp has a segfault

I agree with tianxiaogu. This is a bug that uses setjmp inappropriately. This problem may be triggered in different compilers.

Fixes pertaining background color and grayscale conversions

Thank you for your use and contribution to libpng.

libpng error: [00][B8][05][A9]: invalid chunk type

No one seems to be paying attention to this problem? Has this problem been solved in the new version?

contrib/gregbook: fix syntax errors

Obvious grammatical mistakes, thank you for discovering.

Support of PNG_ADLER32_SUPPORTED

It is a good solution.

pnm2png stack-buffer-overflow

I can't reproduce the problem.

Heap buffer overflow (Read of size 1) in pngimage.c

hi, I compile libpng with these command: ``` export CFLAGS="-g -fsanitize=address" LDFLAGS="-fsanitize=address" CC=clang ./configure --host=arm make ``` Run the following command ``` ./pngimage test_*.png test_1.png: error(libpng): original read: IHDR: CRC...