Change fish path addition command - #207
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halostatue
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| if test -f $HOME/.config/fish/config.fish; then | ||
| echo -e "\n# bun\nset -Ux BUN_INSTALL \"$bun_install\"" >>"$HOME/.config/fish/config.fish" | ||
| echo -e "set -px --path PATH \"$bin_dir\"\n" >>"$HOME/.config/fish/config.fish" | ||
| echo -e "fish_add_path \"$bin_dir\"\n" >>"$HOME/.config/fish/config.fish" |
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Note that these two changes are not quite equivalent.
By default, fish_add_path modifies $fish_user_paths, a universal variable. If you just want to modify $PATH by default, this should be done with fish_add_path -P ….
Jarred-Sumner
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Jul 23, 2026
#35255) `test/js/bun/http/serve-protocols.test.ts` has been going red on main (build 78445 darwin-x64 hard, 78462 debian-11-aarch64 hard, plus 78300/78419 with retries), always as ``` error: HTTP3StreamReset fetching "https://127.0.0.1:<port>/echo" ✗ Bun.serve over http/3 > POST echo 1000000 bytes [20169.37ms] ``` Reproduced on Linux by looping the file: the h3 subset alone fails about 17 of 100 runs. ## Cause The ten concurrent h3 tests share one lsquic client engine and one unconnected UDP socket. `bsd_create_udp_socket()` sets `IP_RECVERR` on every UDP socket (for `node:dgram`'s error surfacing, #28827), including QUIC's. When a finished test `proc.kill()`s its server, the client session is still in the engine and keeps scheduling retransmits / `NEW_CONNECTION_ID` to an unbound port. With `IP_RECVERR` on, the resulting ICMP port-unreachable is queued on the shared socket and the next `sendmmsg` returns `-1 ECONNREFUSED`, even though that call is sending a datagram to a live peer. `us_quic_packets_out` reports that as a short return, lsquic clears `ENPUB_CAN_SEND` for the whole engine and only its one-second `resume_sending_at` failsafe re-enables it. With several dead sessions generating ICMPs, every failsafe retry fails the same way and the live 1MB upload never advances; the 20s in CI is two idle-timeout rounds through `retry_or_fail`. While tracing that I also found an unsigned underflow in lsquic's `send_batch` requeue loop: when the first unsent spec in a batch coalesces multiple packets (`pack_off[0] == 0`, `iovlen > 1`), `end = &batch->packets[off - 1]` indexes with `UINT_MAX` and only the last packet of the coalesced group is returned to the connection. The earlier ones are the INIT ACK and the HSK CRYPTO carrying the client Finished, so the peer can never complete the handshake. This is the same hang reached from a different direction (real EAGAIN backpressure instead of stale ICMP). ## Fix - `IP_RECVERR` is now opt-in via `LIBUS_UDP_LINUX_RECVERR`, set by `us_create_udp_socket` when a `recv_error_cb` is provided. `node:dgram` always passes one and keeps the option; QUIC passes `NULL` and no longer gets it. This matches libuv's `UV_UDP_LINUX_RECVERR` gating that `bsd.c` already cited. - `us_quic_packets_out()` retries once on a non-`EAGAIN`/`ENOBUFS` send failure before reporting a short return, so a stale `sk_err` that does surface cannot pause the engine. Both the `sendmmsg` and per-packet paths now go through `US_FAULT_CHECK(US_FAULT_SENDMSG, ...)` so the short-return path is reachable from tests. - `patches/lsquic/requeue-unsent-coalesced.patch` rewrites the requeue loop's bounds as `[off, off+count)` so every packet in an unsent coalesced datagram is returned to the connection. The same underflow is present in upstream lsquic master; I will open a PR there separately. - `serve-protocols.test.ts` now stops each fixture server gracefully on stdin close (`server.stop(true)`), matching `serve-http3.test.ts`, so the pooled client session sees `CONNECTION_CLOSE` instead of leaving the engine retransmitting to unbound ports. - `test/js/web/fetch/fetch-http3-syscall-fault.test.ts` injects `EAGAIN` on the coalesced handshake datagram (the `pack_off[0]==0`, `iovlen>1` spec the lsquic patch fixes), a one-shot `ECONNREFUSED` that the retry-once branch consumes, and a burst of `EAGAIN` that the `on_drain` path recovers from. ## Verification Release build, looped: | | before | after | | --- | --- | --- | | `serve-protocols -t "http/3"` | 17/100 fail | 2/100 fail | | `serve-protocols` (full) | 7/100 fail | 4/200 fail | Debug+ASAN: `serve-protocols`, `serve-http3` (46), `fetch-http3-client` (52), `fetch-http3-adversarial` (29), `fetch-http3-syscall-fault` (3) and `dgram.test.ts` all pass, 211 tests total. The residual ~1-2% is a separate pre-existing bug (the client's 36-byte HSK CRYPTO is buffered but never flushed when `drain_send_body` writes the whole 1MB body synchronously from `on_stream_open`); I've handed that off as its own issue. With CI's retry it is well under the flake threshold. ### Gate note The fault-injection hook that makes the new test deterministic lives in `packages/bun-usockets/src/quic.c`, so `git stash -- src/ packages/` removes it along with the fix and the fault never fires. The lsquic piece lives in `patches/` and `scripts/`, which the stash does not touch. That means a single stashed run passes (no fault, no stall) and a single unstashed run passes (fault fires, fix handles it), and the gate cannot distinguish them mechanically. The 300-iteration probe above is the evidence; the fault-injection tests pin the behavior going forward. <details> <summary>lsquic debug trace of the stall</summary> ``` engine: packets out returned 0 (out of 1) [C919…] event: unsent packet #15 ACK_FREQUENCY, size 36 [C919…] sendctl: packet #15 has been delayed engine: send_packets_out: sent 0 packets … <- no "can send again"; nothing for 1s engine: failsafe activated: resume sending packets again after timeout engine: packets out returned 0 (out of 10) <- fails again, live conn's #207 included ``` and for the underflow, a batch with `pack_off[0]=0`, `iovlen[0]=3`: ``` engine: packets out returned 0 (out of 2) event: unsent packet #3 ACK PADDING, size 1059 event: unsent packet #4 ACK CRYPTO, size 87 event: unsent packet #5 NEW_CONNECTION_ID, size 54 event: unsent packet #6 STREAM, size 114 sendctl: packet #6 has been delayed sendctl: packet #5 has been delayed … <- #3 and #4 never requeued [WARN] sendctl: send history gap 2 - 5 ``` </details> <!-- robobun:evidence:begin --> --- **no test proof** · iteration 1 · Platform-specific test(s) that do not run on this machine. Deferring to CI, which covers all platforms: test/js/web/fetch/fetch-http3-syscall-fault.test.ts <!-- robobun:evidence:end --> --------- Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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I noticed in the README that the
fish_add_pathfunction is mentioned. It's also been a function that's been around since fish3.2.0(March 2021) so I think this should be a relatively sane change.