C: Compressing large input data triggers an assert (with BROTLI_DEBUG=1)

[niklasalbers]

Trying to compress large input data triggers an assert:
enc/hash_longest_match64_simd_inc.h:198: FindLongestMatchH68: Assertion `cur_ix_masked + max_length <= ring_buffer_mask' failed.

If quality is set to 6, input data larger than 33554431 bytes will trigger the assert.
If I reduce BROTLI_PARAM_LGWIN / --lgwin, the assert will be triggered for smaller data sizes.

I was not able to reproduce it with version 1.1.0.

How to reproduce:

1. Compile with BROTLI_DEBUG=1.
2. head -c 33554432 /dev/urandom > large-file && brotli --quality=6 --force large-file --output=large-file.out
3. head -c 8388607 /dev/urandom > large-file && brotli --quality=6 --force large-file --output=large-file.out --lgwin=21

[eustas]

Thanks for reporting, will investigate soon.

[eustas]

There is one-off in DCHECK. Will be fixed soon.