Self-host M5: native $argv bridge — BOOTSTRAP_M5_DRIVER_HOST_FULL_CLI segfault 139 #2794

Milestone

M5 — native CLI/runtime parity for compiled driver (parent #1492)

Problem

docs/bootstrap-selfhost.md documents that M5 driver host link probe is currently only partial:

• make bootstrap-selfhost-driver-host-compile → sidecar link OK, but full CLI (BOOTSTRAP_M5_DRIVER_HOST_FULL_CLI=1) hits an LLVM 9 segfault (exit 139) “until native $argv bridge”.

This blocks expanding the compiled-driver smoke into a real CLI-shaped self-host path (and makes cold-boot experiments in #2771 brittle).

Scope

• lib/VM.php / lib/VM/Context.php / lib/Web/Superglobals.php: argv/argc ingest path (identify compiled-driver call chain)
• lib/AOT/runtime/*.c: minimal runtime bridge for argv when running compiled bin/* entrypoints
• src/cli_driver.php / bin/vm.php: CLI dispatch path that must work under native emit
• Any existing bootstrap glue used by bootstrap-selfhost-driver-host-compile

Repro

# Documented partial gate:
./script/docker-exec.sh -- bash -lc 'make bootstrap-selfhost-driver-host-compile'

# Documented crash mode (expected today):
./script/docker-exec.sh -- bash -lc 'BOOTSTRAP_M5_DRIVER_HOST_FULL_CLI=1 make bootstrap-selfhost-driver-host-compile; echo exit:$?'
# exit:139 (segfault)

Done when

• BOOTSTRAP_M5_DRIVER_HOST_FULL_CLI=1 make bootstrap-selfhost-driver-host-compile exits 0 (no segfault)
• The compiled driver can run a minimal CLI fixture that reads $argv/$argc without Zend fallback
• Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492 gate table updated to reflect the new green slice (or links to this issue as the remaining blocker)

Labels

suggested: self-host, bootstrap, IMPORTANT

Links

#1492 · #2769 · #2771