Known Emscripten issue to report upstream

[tiran]

A ticket to collect issues and bugs with Emscripten. We want to report them upstream eventually.

• Emscripten defines IPPROTO_SCTP, but socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP) causes an abort, socket: return EPROTONOSUPPORT on invalid protocol emscripten-core/emscripten#16479
• clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &timeout_abs, NULL) does not work as expected, causes time.sleep to hang forever. nanosleep(&timeout_ts, NULL) works. clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME) sleeps forever emscripten-core/emscripten#16453
• freeaddrinfo crash Segfault in freeaddrinfo, memory leak in getaddrinfo emscripten-core/emscripten#16081
• strftime mishandles quoted percent, strftime() mishandles quoted percent, e.g. %%z emscripten-core/emscripten#16155
• week number of strftime("%U") and %W wrong week number of strftime("%U") and %W wrong emscripten-core/emscripten#16156
• mkfifo() and mknod() create regular file mkfifo() and mknod() create regular file with NODERAWFS=1 emscripten-core/emscripten#16158
• opendir / open(O_DIRECTORY) leaks file directory NODERAWFS open() O_DIRECTORY / opendir() leak file descriptor on error emscripten-core/emscripten#16452
• msync() on anonymous mapping fails, msync() on anonymous mapping fails with TypeError: Cannot read property 'stream_ops' of undefined emscripten-core/emscripten#16350
• fstat does not work on pipes, fstat doesn't work on pipes emscripten-core/emscripten#16414 and bpo-40280: Skip dysfunctional pipe tests on Emscripten (GH-31770) python/cpython#31770
• fstat does not work on unlinked file
• Blocking socket accept() fails with TypeError: Cannot read property 'stream' of undefined, Fail blocking socket operations loudly emscripten-core/emscripten#16047
• utimensat sets wrong atime and mtime, NODERAWFS: utime, utimensat set wrong atime and mtime (overflow issue?) emscripten-core/emscripten#16458
• umask is stubbed
• select does not support non-NULL exceptfds, crashes with assertion error. CPython workaround bpo-40280: select: Use NULL for empty fdset (GH-31865) python/cpython#31865
• strftime %V issue, Fix edge case in strftime %V (ISO 8601 week number) emscripten-core/emscripten#16494

[ethanhs]

I'm actually surprised a nanosecond timer works at all considering the spectre mitigations

[tiran]

• freeaddrinfo crash Segfault in freeaddrinfo, memory leak in getaddrinfo emscripten-core/emscripten#16081

[tiran]

• strftime mishandles quoted percent, strftime() mishandles quoted percent, e.g. %%z emscripten-core/emscripten#16155

[brettcannon]

Did the two initial issues get reported upstream? Based on how they already fixed the last two issues Christian reported it seems the Emscripten folks are quick to fix things.

[tiran]

Did the two initial issues get reported upstream? Based on how they already fixed the last two issues Christian reported it seems the Emscripten folks are quick to fix things.

No, I haven't had time to create simple reproducers in C for the two initial bugs.