subagent transcript

session 17f09f89 · workflow wf_4f35050d

delegated task

Rebuilding the FreeCAD-wasm PySide binding stack with NATIVE wasm exceptions (new-EH / try_table, -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0) to mat

▸ Magik

Rebuilding the FreeCAD-wasm PySide binding stack with NATIVE wasm exceptions (new-EH / try_table, -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0) to match the JSPI + wasm-EH toolchain (qt-jspi is try_table). Mixed EH => invalid module, so EVERY C++ archive must be new-EH with ZERO 'U invoke_' symbols. Env: source /opt/toolchains/emsdk/emsdk_env.sh AND export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim (host shiboken6 needs the libclang shim). Working dir /home/magik6k/lcad-wasm/pyside-port. The build scripts there ALREADY have the new-EH flags applied. QtCore was already rebuilt new-EH (build/m2-qtcore/, validated). VERIFY each output archive: (a) it exists + has its PyInit symbol; (b) new-EH: emnm <archive> | grep -c 'U invoke_' MUST be 0 (invoke_ = JS-EH leftover = fail); (c) optional: extract one .o, link 'int main(){}' + the .o with 'em++ -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sJSPI -sERROR_ON_UNDEFINED_SYMBOLS=0' and node -e 'WebAssembly.validate(...)' == true. Report the archive path, PyInit symbol presence, invoke_ count (must be 0), and pass/fail. REBUILD numpy new-EH. The current build/numpy-wasm/libnumpy_wasm.a has 30 'U invoke_' (JS-EH) which must go to 0 for JSPI. numpy was cross-built via build/numpy-wasm/BUILD.sh (meson + emscripten, numpy 2.4.6, 12 C-extensions). Add -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 to the meson emscripten cross-file's c_args/cpp_args (and, if setjmp/longjmp appears, -sSUPPORT_LONGJMP=wasm) so the C-extensions compile without invoke_. Re-run BUILD.sh, reassemble libnumpy_wasm.a. VERIFY: the 12 PyInit symbols still present AND emnm libnumpy_wasm.a | grep -c 'U invoke_' == 0. This is the trickiest one (meson + longjmp) — timebox to a real attempt; if a residual invoke_ remains from an unavoidable setjmp path, report exactly which object + symbol so the integrator can decide (numpy never suspends, so a runtime-safe invoke_ may be acceptable if the module still validates). Report the archive + invoke_ count + which objects (if any) still carry invoke_.

Fable

thinking

I'm starting to look at how to rebuild numpy with native wasm exceptions support, beginning with examining the build structure.

Fable

⚙ Bash

{"command": "cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/BUILD.sh 2>/dev/null; echo \"=====LS=====\"; ls -la /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/", "description": "Inspect numpy BUILD.sh and dir"}

tool result

#!/usr/bin/env bash
# ============================================================================
# Reproducible cross-build of numpy 2.4.6 -> static CPython 3.14 wasm target
# (no-pthread, no-dlopen, asyncify, JS-exceptions), producing libnumpy_wasm.a
# whose C extensions register into the FreeCAD inittab (no dlopen).
#
# PROVEN WORKING: `import numpy` + arrays/ufuncs/linalg/fft/random all run under
# node/V8 statically linked via inittab. See harness/ for the runtime probe.
#
# Prereqs (all a  …[truncated]

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; which emnm em++ 2>/dev/null; type emnm 2>/dev/null | head", "description": "Check toolchain tools"}

tool result

/opt/toolchains/emsdk/upstream/emscripten/emnm
/opt/toolchains/emsdk/upstream/emscripten/em++
emnm is /opt/toolchains/emsdk/upstream/emscripten/emnm
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

I'm checking the emscripten-cross.ini configuration file and reviewing what's currently in the archive.

Fable

⚙ Bash

{"command": "cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini", "description": "Read cross file"}

tool result

[binaries]
c = '/opt/toolchains/emsdk/upstream/emscripten/emcc'
cpp = '/opt/toolchains/emsdk/upstream/emscripten/em++'
ar = '/opt/toolchains/emsdk/upstream/emscripten/emar'
ranlib = '/opt/toolchains/emsdk/upstream/emscripten/emranlib'
strip = '/opt/toolchains/emsdk/upstream/emscripten/emstrip'
exe_wrapper = '/opt/toolchains/emsdk/node/22.16.0_64bit/bin/node'

[properties]
needs_exe_wrapper = true
# wasm long double is IEEE-754 binary128 (probed: 1.0L -> ...ff 3f); avoids the
# one cross-blocking  …[truncated]

Fable

⚙ Bash

{"command": "cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/make-archive.sh; echo \"=====setup-env=====\"; cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/setup-env.sh", "description": "Read make-archive and setup-env"}

tool result

#!/usr/bin/env bash
# Assemble ONE self-contained fat archive libnumpy_wasm.a for static inittab linking.
source /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/setup-env.sh
set -uo pipefail
BD=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir
OUT=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm
EMAR=/opt/toolchains/emsdk/upstream/emscripten/emar
EMNM=/opt/toolchains/emsdk/upstream/emscripten/emnm
cd "$BD"

# ---- module private objects (dedup'd) ----
# Full-include modules   …[truncated]

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; A=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a; echo \"PyInit count:\"; emnm $A 2>/dev/null | grep -c 'T PyInit'; echo \"PyInit list:\"; emnm $A…

tool result

PyInit count:
12
PyInit list:
0000488d T PyInit__multiarray_umath
000001dc T PyInit__umath_linalg
00000002 T PyInit__pocketfft_umath
00000001 T PyInit__common
00000002 T PyInit_bit_generator
00000002 T PyInit__generator
00000001 T PyInit__mt19937
00000001 T PyInit__pcg64
00000001 T PyInit__philox
00000001 T PyInit__sfc64
00000001 T PyInit__bounded_integers
00000002 T PyInit_mtrand
invoke_ count:
30
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

I see the issue now—the cross file is using JavaScript exceptions, but I need to switch to WebAssembly exceptions with `wasm-exceptions` and disable the legacy mode. I should also check if `SUPPORT_LONGJMP=wasm` is needed. Let me trace through the invoke_ symbols to figure out what's happening with setjmp and longjmp.

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; A=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a; echo \"=== distinct invoke_ symbols ===\"; emnm $A 2>/dev/null | grep 'U invoke_' | awk '{print …

tool result

=== distinct invoke_ symbols ===
      2 invoke_i
      2 invoke_ii
      2 invoke_iii
      1 invoke_iiii
      1 invoke_iiiii
      1 invoke_iiiiiiiii
      2 invoke_v
      2 invoke_vi
      2 invoke_vii
      1 invoke_viid
      1 invoke_viidi
      1 invoke_viif
      1 invoke_viifi
      2 invoke_viii
      1 invoke_viiid
      2 invoke_viiii
      2 invoke_viiiiii
      1 invoke_viiiiiiii
      1 invoke_viiijj
      1 invoke_viijj
      1 invoke_viijji
=== any setjmp/longjmp refs ===
zshe  …[truncated]

Fable

thinking

No setjmp/longjmp references showing up, which is good—the invoke_ symbols are coming purely from the JavaScript exception handling. Switching to WebAssembly exceptions with `-fwasm-exceptions` and disabling the legacy mode should eliminate those entirely. I'll update the cross file with these flags and rebuild to see the actual impact.

Fable

No setjmp/longjmp — all invoke_ come purely from `-fexceptions`. Switching to native EH should zero them. Let me update the cross file.

Fable

⚙ Bash

{"command": "cp /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini.bak-jseh; echo backed up", "description": "Backup cross file"}

tool result

backed up
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

⚙ Read {"file_path": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini"}

tool result

1	[binaries]
2	c = '/opt/toolchains/emsdk/upstream/emscripten/emcc'
3	cpp = '/opt/toolchains/emsdk/upstream/emscripten/em++'
4	ar = '/opt/toolchains/emsdk/upstream/emscripten/emar'
5	ranlib = '/opt/toolchains/emsdk/upstream/emscripten/emranlib'
6	strip = '/opt/toolchains/emsdk/upstream/emscripten/emstrip'
7	exe_wrapper = '/opt/toolchains/emsdk/node/22.16.0_64bit/bin/node'
8	
9	[properties]
10	needs_exe_wrapper = true
11	# wasm long double is IEEE-754 binary128 (probed: 1.0L -> ...ff 3f); avoids   …[truncated]

Fable

⚙ Edit

{"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini", "old_string": "c_args = ['-fexceptions', '-I/opt/toolchains/python-wasm/include/python3.14']\ncpp_args = ['-fexceptions', '-I/o…

tool result

The file /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini has been updated successfully. (file state is current in your context — no need to Read it back)

Fable

thinking

I need to decide whether to run the full BUILD.sh script or just the specific steps I need. Running the complete build will re-execute meson setup to regenerate the ninja configuration with the new flags, then recompile and create the archive, though some steps like the Python tree staging have already been done. Let me just run the relevant portions instead of the full rebuild.

Fable

⚙ Bash

{"command": "cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/np_wasm_stubs.c; echo \"=== stub invoke check ===\"; source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; emnm /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/…

tool result

/* numpy references glibc backtrace() for its C-level fault traceback; wasm libc
   lacks it. Weak stubs so any real provider in the final link wins. */
#include <stddef.h>
__attribute__((weak)) int backtrace(void **b, int s){ (void)b;(void)s; return 0; }
__attribute__((weak)) char **backtrace_symbols(void *const *b, int s){ (void)b;(void)s; return NULL; }
__attribute__((weak)) void backtrace_symbols_fd(void *const *b, int s, int fd){ (void)b;(void)s;(void)fd; }
=== stub invoke check ===
0000000  …[truncated]

Fable

⚙ Bash

{"command": "grep -n \"ImportError, OSError\" /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6/numpy/_core/_internal.py", "description": "Verify internal.py patch present"}

tool result

20:except (ImportError, OSError):
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

Running the full BUILD.sh script in the background since it'll take a while to recompile the C extensions. The script checks for the backtrace symbol in the archive using grep, but since the stub is weak (W) rather than strong (T), the grep fails and triggers a recompile that adds it properly.

Fable

Stub is clean, patch present. Now running the full rebuild with native EH.

Fable

⚙ Bash

{"command": "cd /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm && bash BUILD.sh > /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log 2>&1; echo \"EXIT=$?\"", "description": "Run numpy rebuild with native EH", "time…

tool result

Command running in background with ID: bw5wm5bu6. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bw5wm5bu6.output. You will be notified when it completes. To check interim output, use Read on that file path.

Fable

⚙ ToolSearch {"query": "select:Monitor", "max_results": 3}

tool result

Fable

⚙ Bash

{"command": "tail -25 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log", "description": "Check rebuild log tail"}

tool result

zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

⚙ Bash

{"command": "tail -30 /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bw5wm5bu6.output", "description": "Read task output tail"}

tool result

EXIT=1
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

I need to check the rebuild log to see what actually happened.

Fable

⚙ Read {"file_path": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log"}

tool result

<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>

Fable

⚙ Bash

{"command": "wc -l /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; echo \"---content---\"; cat /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log", "description": "Full rebuild log"}

tool result

0 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log
---content---
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

The log is empty, which is strange since BUILD.sh sources setup-env.sh which sources env.sh, and something caused an exit code of 1. BUILD.sh has `set -uo pipefail` without `-e`, so it should have continued despite the error, but the empty log suggests the output might have been redirected elsewhere or suppressed.

Let me trace through what happened—BUILD.sh step 2 removes the build directory and runs meson setup, so I should check if meson wrote to its own log files or if the build directory was actually reconfigured. The issue might be that BUILD.sh failed immediately on an unbound variable due to how it was invoked, so I'll run the steps manually to see the actual output.

Fable

Log is empty but exit 1. Let me run the steps manually to see the actual error.

Fable

⚙ Bash

{"command": "ls -la --time-style=+%H:%M:%S /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir/ 2>/dev/null | head; echo \"=== archive mtime ===\"; ls -la --time-style=+%H:%M:%S /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm…

tool result

total 1264
drwxr-xr-x 1 magik6k magik6k    238 19:55:04 [0m[01;34m.[0m
drwxr-xr-x 1 magik6k magik6k    642 02:04:11 [01;34m..[0m
-rw-r--r-- 1 magik6k magik6k 647980 19:51:09 build.ninja
-rw-r--r-- 1 magik6k magik6k 274092 19:51:09 compile_commands.json
-rw-r--r-- 1 magik6k magik6k     92 19:50:20 .gitignore
-rw-r--r-- 1 magik6k magik6k    108 19:50:20 .hgignore
drwxr-xr-x 1 magik6k magik6k    118 19:50:23 [01;34mmeson_cpu[0m
drwxr-xr-x 1 magik6k magik6k    496 19:51:09 [01;34mmeson-info  …[truncated]

Fable

thinking

The build script failed early during environment setup—build.ninja still has an old timestamp, meaning the rebuild never even started. The script sources setup-env.sh which sources env.sh, and something went wrong at the very beginning, likely when `set -uo pipefail` was executed, causing an immediate exit with no output logged.

Let me run the meson setup manually to see what's actually happening.

Fable

BUILD.sh died early (builddir untouched, no output). Let me run it in foreground to capture the failure.

Fable

⚙ Bash

{"command": "cd /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm && bash -x BUILD.sh 2>&1 | head -40", "description": "Trace BUILD.sh start"}

tool result

+ set -uo pipefail
+ BASE=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm
+ SRC=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6
+ VMESON=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6/vendored-meson/meson/meson.py
+ BUILDDIR=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir
+ source /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/setup-env.sh
++ source /home/magik6k/lcad-wasm/env.sh
zshexit:1: parameter HISTDB_FD does not contain a file de  …[truncated]

Fable

thinking

The issue is that sourcing env.sh under bash is causing it to exit, even though the zsh error message about HISTDB_FD is appearing in my interactive shell. Let me check what's actually in env.sh that's causing the script to stop.

Fable

⚙ Bash {"command": "cat /home/magik6k/lcad-wasm/env.sh", "description": "Read env.sh"}

tool result

# source this in every shell for the FreeCAD/PySide wasm toolchain
export EMSDK=/opt/toolchains/emsdk
export EM_CONFIG=/opt/toolchains/emsdk/.emscripten
export PATH="/opt/toolchains/emsdk:/opt/toolchains/emsdk/upstream/emscripten:/opt/toolchains/emsdk/node/22.16.0_64bit/bin:$PATH"
# Arch has libclang 22; host shiboken6 wants libclang-21.so.21 — shim it:
export LD_LIBRARY_PATH="/home/magik6k/lcad-wasm/pyside-port/libshim:$LD_LIBRARY_PATH"
zshexit:1: parameter HISTDB_FD does not contain a file des  …[truncated]

Fable

thinking

The issue is that `env.sh` references `$LD_LIBRARY_PATH` without checking if it's set, and since `BUILD.sh` has `set -u` enabled, bash exits with an error when it encounters the unbound variable. This probably worked before because `LD_LIBRARY_PATH` was already defined in the environment, but under strict mode any undefined variable causes a failure.

The solution is straightforward: I need to pre-export `LD_LIBRARY_PATH` with the correct path before running `BUILD.sh`, so the variable is already bound when `env.sh` tries to reference it.

Fable

env.sh references `$LD_LIBRARY_PATH` which is unbound under `set -u`. Pre-exporting it fixes the early exit.

Fable

⚙ Bash

{"command": "export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim; source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; cd /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm && bash BUILD.sh > rebuild-newEH.log 2>&1; e…

tool result

Command running in background with ID: bj7p5q2xq. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bj7p5q2xq.output. You will be notified when it completes. To check interim output, use Read on that file path.

Fable

⚙ Monitor

{"command": "L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"ERROR|error:|FAILED|Traceback|ninja: |DONE:|duplicate DEFINED|PyInit|archive built|WARN missing|invalid|Segmen…

tool result

Monitor started (task buzd7f6yg, timeout 600000ms). You will be notified on each event. Keep working — do not poll or sleep. Events may arrive while you are waiting for the user — an event is not their reply.

Fable

thinking

The build completed quickly even though it did a full rebuild with `rm -rf builddir`, which is surprising — I should check the logs to see if something was actually cached or if the compilation just ran faster than expected.

Fable

⚙ Bash

{"command": "L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; wc -l \"$L\"; echo \"=== tail ===\"; tail -30 \"$L\"", "description": "Check rebuild log"}

tool result

21 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log
=== tail ===

ERROR: Neither source directory '/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir' nor build directory None contain a build file meson.build.

ERROR: Current directory is not a meson build directory: `/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated wit  …[truncated]

Fable

thinking

The meson setup failed, so I'm checking the beginning of the log to find what went wrong.

Fable

The meson setup step failed, cascading everything. Let me see the top of the log.

Fable

⚙ Bash

{"command": "head -15 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log", "description": "Head of rebuild log"}

tool result

ERROR: Neither source directory '/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir' nor build directory None contain a build file meson.build.

ERROR: Current directory is not a meson build directory: `/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated with an old
meson version. Please regenerate it in this case.
Install data not found. Run t  …[truncated]

Fable

thinking

The meson setup command failed right away because it couldn't find meson.build in either the source or build directory. The builddir was removed but setup didn't recreate it properly, which then caused the compile step to fail with a misleading error. The actual setup failure details aren't showing up in the log output I'm looking at.

Let me run the meson setup command directly with the vendored meson to see what the real error is.

Fable

Meson setup itself failed silently. Let me run it manually to see the real error.

Fable

⚙ Bash

{"command": "export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim\nBASE=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm\nSRC=$BASE/numpy-2.4.6\nVMESON=$SRC/vendored-meson/meson/meson.py\nBUILDDIR=$BASE/builddir\nsource $B…

tool result

The Meson build system
Version: 1.9.2
Source dir: /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6
Build dir: /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir
Build type: cross build
Project name: NumPy
Project version: 2.4.6

meson.build:1:0: ERROR: Executables created by c compiler /opt/toolchains/emsdk/upstream/emscripten/emcc are not runnable.

A full log can be found at /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir/meson-logs/meson-log.txt
SETUP_  …[truncated]

Fable

thinking

Meson's sanity check is failing because the compiled WebAssembly executable won't run under node. The issue seems to be with the combination of flags I'm using — specifically `-fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sSUPPORT_LONGJMP=wasm` — which might be producing a module that node can't execute, possibly due to missing flags or incompatible exception handling with the longjmp support.

Fable

⚙ Bash

{"command": "grep -iE \"not runnable|Running|stderr|stdout|returncode|exit|Command line|sanity|emcc.*\\.c\" /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir/meson-logs/meson-log.txt | tail -40", "description": "Grep meson-log f…

tool result

Running command: /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/xbuild-venv/bin/python3 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6/numpy/_build_utils/gitversion.py
--- stdout ---
--- stderr ---
stdout:
Sanity testing C compiler: /opt/toolchains/emsdk/upstream/emscripten/emcc
Sanity check compiler command line: /opt/toolchains/emsdk/upstream/emscripten/emcc sanitycheckc.c -o sanitycheckc_cross.exe -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sSUPPORT_LONGJMP=wasm -I/o  …[truncated]

Fable

thinking

The wasm module is failing to instantiate in node 22.16 because the exception handling implementation isn't compatible—either the new try_table encoding for wasm-EH isn't enabled by default, or the module needs an experimental flag. There's also a note about legacy and exnref wasm exception handling mixing causing issues with V8 loads.

Node 22 should support the standardized wasm exception handling with exnref and try_table, though it might require the `--experimental-wasm-exnref` flag. I should test this by compiling a minimal program with the same flags and running it under node with and without the flag to see the actual error message.

Fable

The sanity wasm fails to instantiate under node. Let me reproduce and find the real reason.

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1\ncd /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/scratchpad\nprintf 'int main(){return 0;}\\n' > t.c\nemcc t.c -o t.js -fwasm-exceptions…

tool result

=== run default ===
=== node version ===
v26.2.0
=== try exnref flag ===
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

So the issue is that node v26.2.0 from the emsdk environment handles the new try_table/exnref exception handling features fine, but node 22.16.0 from the build's setup-env doesn't support them by default. The emsdk_env.sh I sourced provides the newer node version, while the build's setup-env.sh uses env.sh which puts the older node 22.16.0 in the PATH instead.

Since the cross file's exe_wrapper is hardcoded to node 22.16.0, the meson sanity tests fail when trying to instantiate the new-EH module. The cleanest solution is to update the exe_wrapper in the cross file to point to node v26.2.0, which actually supports the exception handling features we're migrating to. I need to find where that   …

Fable

Node 22.16 (build's wrapper) can't instantiate new-EH; the emsdk's node v26.2.0 can. Let me point exe_wrapper at the newer node.

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; which node; node --version; ls -d /opt/toolchains/emsdk/node/*/", "description": "Locate newer node"}

tool result

/bin/node
v26.2.0
[0m[01;34m/opt/toolchains/emsdk/node/22.16.0_64bit/[0m
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

The system node at /bin/node is version 26.2.0, which is newer than what emsdk provides (22.16.0), and I've confirmed it runs the new-EH module without errors. I need to update the cross file's exe_wrapper to point to /bin/node and also adjust the setup-env PATH accordingly.

Fable

⚙ Bash {"command": "readlink -f /bin/node; /bin/node --version", "description": "Resolve /bin/node path"}

tool result

/usr/bin/node
v26.2.0
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

⚙ Edit

{"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini", "old_string": "exe_wrapper = '/opt/toolchains/emsdk/node/22.16.0_64bit/bin/node'", "new_string": "exe_wrapper = '/usr/bin/node'…

tool result

The file /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini has been updated successfully. (file state is current in your context — no need to Read it back)

Fable

thinking

I'm checking whether the setup-env.sh script properly places Node 22.16.0 in the PATH, and considering how Meson's cross file exe_wrapper might interact with it. While numpy's build process might invoke Node directly for certain tasks, those shouldn't be affected since the gitversion.py script runs Python instead. Let me re-run the Meson setup to verify it works now, then proceed with the full compile and archive.

Fable

Now re-run meson setup to confirm the sanity check passes.

Fable

⚙ Bash

{"command": "export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim\nBASE=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm\nSRC=$BASE/numpy-2.4.6\nVMESON=$SRC/vendored-meson/meson/meson.py\nBUILDDIR=$BASE/builddir\nsource $B…

tool result

Generating multi-targets for "loops_unary_fp_le.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_unary_complex.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_autovec.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_half.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "_simd.dispatch.h" 
  Enabled targets: baseline
Build targets in project: 61

NumPy 2.4.6

  User defined options
    Cross   …[truncated]

Fable

thinking

The setup completed successfully with build.ninja generated and no errors, so now I'm running the full BUILD.sh script in the background to proceed with compilation and archiving.

Fable

Setup succeeded. Now running the full BUILD.sh end-to-end.

Fable

⚙ Bash

{"command": "export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim; source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; cd /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm && bash BUILD.sh > rebuild-newEH.log 2>&1; e…

tool result

Command running in background with ID: bw4pyv59z. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bw4pyv59z.output. You will be notified when it completes. To check interim output, use Read on that file path.

Fable

⚙ Monitor

{"command": "L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: error|DONE:|duplicate DEFINED|archive built|PyInit_|WARN missing|Sanity|not run…

tool result

Monitor started (task brhypki7b, timeout 600000ms). You will be notified on each event. Keep working — do not poll or sleep. Events may arrive while you are waiting for the user — an event is not their reply.

Fable

thinking

I'm seeing output from an old monitor task that's still running and tailing logs, which is mixing with new events. The build failed again with a meson.build error, but I'm trying to figure out if this is from the old monitor replaying or something new. There seem to be two separate monitor tasks running, which is causing confusion about what's actually happening.

The real issue is that BUILD.sh runs meson setup from the base directory (numpy-wasm), not from the source directory where meson.build actually lives. When I tested manually, I cd'd to the source directory first, so setup worked. But BUILD.sh doesn't do that cd — it just runs the meson command from wherever it was invoked, which me  …

Fable

Two monitors are tailing the same log causing confusion. Let me stop and check ground truth: the actual archive.

Fable

⚙ ToolSearch {"query": "select:TaskStop", "max_results": 2}

tool result

Fable

⚙ Bash

{"command": "tail -20 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; echo \"=== archive ===\"; ls -la --time-style=+%H:%M:%S /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a 2>&1", "description":…

tool result

ERROR: Current directory is not a meson build directory: `/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated with an old
meson version. Please regenerate it in this case.
Install data not found. Run this command in build directory root.
cp: cannot create regular file '/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/stage/usr/local/lib/python3.14/sit  …[truncated]

Fable

thinking

I see the issue now—BUILD.sh needs to run from the $SRC directory, not $BASE, which is why the meson setup failed and created that broken archive. My manual approach worked because I changed into $SRC first, so the fix is either running the script from the correct directory or adjusting how BUILD.sh handles its paths.

Fable

Root cause: BUILD.sh runs `meson setup` which infers sourcedir from CWD — it must run from $SRC, not $BASE. Let me stop monitors and rerun correctly.

Fable

⚙ TaskStop {"task_id": "buzd7f6yg"}

tool result

{"message":"Successfully stopped task: buzd7f6yg (L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"ERROR|error:|FAILED|Traceback|ninja: |DONE:|duplicate DEFINED|PyInit|archive built|WARN missing|invalid|Segmentation\")","task_id":"buzd7f6yg","task_type":"local_bash","command":"L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"ERROR|error:|FAILED|Traceback|ninja:   …[truncated]

Fable

⚙ TaskStop {"task_id": "brhypki7b"}

tool result

{"message":"Successfully stopped task: brhypki7b (L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: error|DONE:|duplicate DEFINED|archive built|PyInit_|WARN missing|Sanity|not runnable|EXIT=\")","task_id":"brhypki7b","task_type":"local_bash","command":"L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: e  …[truncated]

Fable

⚙ Bash

{"command": "export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim; source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1; cd /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/numpy-2.4.6 && bash /home/magik6k/lcad-wasm/…

tool result

Command running in background with ID: bnrvs75ss. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bnrvs75ss.output. You will be notified when it completes. To check interim output, use Read on that file path.

Fable

⚙ Monitor

{"command": "L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: error|DONE:|duplicate DEFINED|archive built|not runnable|Neither source|EXIT=\"…

tool result

Monitor started (task b23425ef2, timeout 600000ms). You will be notified on each event. Keep working — do not poll or sleep. Events may arrive while you are waiting for the user — an event is not their reply.

Fable

thinking

Waiting for the C extensions to compile, which should take a few minutes.

Fable

⚙ Bash

{"command": "sleep 45; grep -c \"^\\[\" /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log 2>/dev/null; tail -3 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log", "description": "Peek build progress…

tool result

<tool_use_error>Blocked: sleep 45 followed by: grep -c "^\[" /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log tail -3 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log. To wait for a condition, use Monitor with an until-loop (e.g. `until <check>; do sleep 2; done`). To wait for a command you started, use run_in_background: true. Do not chain shorter sleeps to work around this block.</tool_use_error>

Fable

I'll let the monitor notify me. Waiting for the build to complete.

Fable

⚙ Read {"file_path": "/tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bnrvs75ss.output"}

tool result

<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>

Fable

thinking

I'm waiting for the build to complete rather than polling for updates. The monitor should notify me when the task finishes, so I'll stay passive and let the notification come through instead of actively checking.

Fable

The build is running; the monitor will notify me on completion. Waiting.

Fable

⚙ Bash

{"command": "until grep -q \"EXIT=\" /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log 2>/dev/null; do sleep 5; done; echo \"build finished\"; tail -4 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.l…

tool result

Command running in background with ID: br4ih6k6m. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/br4ih6k6m.output. You will be notified when it completes. To check interim output, use Read on that file path.

Fable

⚙ Read {"file_path": "/tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/br4ih6k6m.output"}

tool result

<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>

Fable

I'll wait for the completion notification rather than polling.

Fable

⚙ Read {"file_path": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log"}

tool result

<system-reminder>Warning: the file exists but is shorter than the provided offset (1). The file has 1 lines.</system-reminder>

Fable

thinking

The compilation is running but the output is being buffered, so I'll hold off on sending more commands and just wait for the build to complete.

Fable

Waiting for the build to finish — the monitor and wait-task will notify me.

Fable

⚙ Bash

{"command": "wc -l /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -5 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log", "description": "Check log line count"}

tool result

0 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

Meson is buffering the output since stdout is redirected, and Ninja's compile output won't appear until it finishes. I'll wait for the completion notification rather than polling.

Fable

The build is compiling (output buffered). I'll wait for the completion notification.

Fable

⚙ Read {"file_path": "/tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/bnrvs75ss.output"}

tool result

Wasted call — file unchanged since your last Read. Refer to that earlier tool_result instead.

Fable

I'll stop polling and await the notification.

Fable

⚙ Bash

{"command": "ls -la --time-style=+%H:%M:%S /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir/build.ninja; find /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir -name '*.o' 2>/dev/null | wc -l", "description": "Check…

tool result

-rw-r--r-- 1 magik6k magik6k 659310 02:09:42 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir/build.ninja
174
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

The compilation is progressing well with 174 objects already processed, and I'm waiting for the next notification to see how it continues.

Fable

174 objects compiled, progressing well. Awaiting completion.

Fable

⚙ Read {"file_path": "/tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/tasks/br4ih6k6m.output"}

tool result

Wasted call — file unchanged since your last Read. Refer to that earlier tool_result instead.

Fable

I'll wait for the notification instead of polling.

Fable

⚙ Bash

{"command": "find /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/builddir -name '*.o' 2>/dev/null | wc -l; ls -la --time-style=+%H:%M:%S /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a 2>&1 | tail -1", "descriptio…

tool result

187
-rw-r--r-- 1 magik6k magik6k 10955414 02:09:59 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

Build completed, archive rebuilt (162 members, 0 duplicate symbols). Now verifying the invoke_ count and PyInit symbols.

Fable

⚙ TaskStop {"task_id": "b23425ef2"}

tool result

{"message":"Successfully stopped task: b23425ef2 (L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: error|DONE:|duplicate DEFINED|archive built|not runnable|Neither source|EXIT=\")","task_id":"b23425ef2","task_type":"local_bash","command":"L=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/rebuild-newEH.log; tail -f \"$L\" | grep -E --line-buffered \"error:|FAILED|Traceback|ninja: error|DONE:|du  …[truncated]

Fable

⚙ TaskStop {"task_id": "br4ih6k6m"}

tool result

<tool_use_error>Task br4ih6k6m is not running (status: completed)</tool_use_error>

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1\nA=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a\necho \"=== archive ===\"; ls -la --time-style=+%H:%M:%S $A\necho \"=== PyInit count ===\"; emnm …

tool result

=== archive ===
-rw-r--r-- 1 magik6k magik6k 10955414 02:09:59 /home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a
=== PyInit count ===
12
=== PyInit list ===
PyInit_bit_generator
PyInit__bounded_integers
PyInit__common
PyInit__generator
PyInit__mt19937
PyInit_mtrand
PyInit__multiarray_umath
PyInit__pcg64
PyInit__philox
PyInit__pocketfft_umath
PyInit__sfc64
PyInit__umath_linalg
=== invoke_ count ===
0
=== invoke_ per object (if any) ===
zshexit:1: parameter HISTDB_FD does not co  …[truncated]

Fable

All 12 PyInit symbols present, invoke_ count = 0. Now the optional validation: extract one object, link with main + native-EH/JSPI, and validate the module.

Fable

⚙ Bash

{"command": "source /opt/toolchains/emsdk/emsdk_env.sh >/dev/null 2>&1\ncd /tmp/claude-1000/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/scratchpad\nA=/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a\nrm …

tool result

extracting: meson-generated_numpy_random__mt19937.pyx.c.o
-rw-r--r-- 1 magik6k magik6k 103817 Jul  6 02:10 meson-generated_numpy_random__mt19937.pyx.c.o
clang++: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated [-Wdeprecated]
em++: warning: -sASYNCIFY=2 (JSPI) is still experimental [-Wexperimental]
=== validate ===
WebAssembly.validate = true
zshexit:1: parameter HISTDB_FD does not contain a file descriptor

Fable

thinking

All the validation checks are passing—the archive has the expected symbols, the invoke count is zero, and the WebAssembly object is properly linked with exception handling and JSPI support. I'm wrapping up the rebuild and preparing to report the results. The key modification was switching the exception handling flags in the cross file to use WebAssembly exceptions instead of the standard approach.

I also had to adjust the node executable from version 22.16.0 to v26 since the older version couldn't instantiate the new exception handling modules during meson's sanity checks, and I needed to run the build script from the numpy source directory while pre-exporting the library path since the env  …

Fable

All verifications pass. The numpy new-EH rebuild is complete and validated. Summary of what was needed and done: - Edited `/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/emscripten-cross.ini`: swapped `-fexceptions` → `-fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sSUPPORT_LONGJMP=wasm` in all four arg lists (backup at `emscripten-cross.ini.bak-jseh`). - Also changed `exe_wrapper` from the emsdk-bundled node 22.16.0 to `/usr/bin/node` (v26): the bundled 22.16 cannot instantiate native-EH (try_table/exnref) modules, so meson's compiler sanity/run checks aborted at `createWasm`. v26 runs them fine. - Two invocation gotchas fixed while running: BUILD.sh must run with CWD = the numpy source dir (`numpy-2.4.6/`) because `meson setup` infers sourcedir from CWD; and `LD_LIBRARY_PATH` must be pre-exported since `env.sh` dereferences it under `set -u`. Verification results: - Archive: `/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a` (162 members, 0 duplicate defined symbols) - All 12 PyInit symbols present: `_multiarray_umath, _umath_linalg, _pocketfft_umath, _common, bit_generator, _generator, _mt19937, _pcg64, _philox, _sfc64, _bounded_integers, mtrand` - `emnm | grep -c 'U invoke_'` = **0** (was 30). No object carries a residual invoke_; no setjmp/longjmp symbols present either. - Link probe: extracted `_mt19937` object linked with `em++ -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sJSPI -sERROR_ON_UNDEFINED_SYMBOLS=0` + `int main(){}` → `WebAssembly.validate = true`.

Fable

⚙ StructuredOutput

{"component": "numpy", "ok": true, "invokeCount": 0, "archivePath": "/home/magik6k/lcad-wasm/pyside-port/build/numpy-wasm/libnumpy_wasm.a", "pyinitPresent": true, "validated": true, "notes": "Rebuilt numpy 2.4.6 (12 C-extensions) with NATIV…

tool result

Structured output provided successfully