Broken with libFLAC < 1.4.0 ("internal psf_fseek() failed")

首先使用嵌入的 example.dat 数据和文档中记载的 SoundFile 命令重现故障，并将列出的 libsndfile_x86_64.so 提交与 Debian 的 libsndfile 进行比较。确定缺陷位于 libFLAC、libsndfile、SoundFile 打包还是编译环节；使用已发布的软件包成功读取示例 FLAC 即表示完成。

Some versions of the SoundFile package on PyPI, including the latest version (0.12.1), appear to be broken. It appears that something is wrong with the precompiled "libsndfile_x86_64.so". I have no idea about other platforms. I don't know if this is actually a bug in libFLAC, or in libsndfile, or in SoundFile, or a bug in how libFLAC/libsndfile was compiled.

The latest version in the libsndfile-binaries repo is possibly fixed, but there hasn't been a new release of SoundFile for a while.

Here is an example file, gzipped and base64ed:
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I think this is a valid FLAC file, though I'm not sure. Running python3 -c 'import soundfile; soundfile.SoundFile("example.dat").read(78419)' should succeed.

• With python3-soundfile (and libsndfile) from Debian bookworm, it works.
• With libsndfile_x86_64.so from commit f5311e9 (md5 = 8e42bd39f38254cf9a5c8ad1bc975faa), it fails.
• With libsndfile_x86_64.so from commit 1ddbbd5 (md5 = 44c0cbf5b8f2a96d309d3e648718bdec), it fails.
• With libsndfile_x86_64.so from commit f1655ba (md5 = 1bd1cc5a1b3724c97ea26d007110e5f1), it works.
• With libsndfile_x86_64.so from commit 42c638d (md5 = 243f680f7a517539fe867731fc5fd5d0), it works.