add io traps #1345

Job	Run time
init (ubuntu-20.04)	9m 38s
init (ubuntu-latest)	47s
Build using autoconf tarball (ubuntu-20.04)	2m 27s
compile (ubuntu-20.04)	1m 40s
Build using autoconf tarball (ubuntu-latest)	2m 28s
scan-build	3m 35s
compile (ubuntu-20.04, -Dbuildtype=debug -Db_lto=false)	1m 8s
Code QL Analyze (ubuntu-20.04)	5m 29s
compile (ubuntu-20.04, -Dbuildtype=debug -Db_lto=false -Dplugin-syscalls=false)	1m 38s
Code QL Analyze (ubuntu-latest)	5m 28s
compile (ubuntu-20.04, -Dbuildtype=debug -Db_lto=false -Db_sanitize=address,undefined)	1m 23s
cognitive-complexity	30s
infer	7m 7s
compile (ubuntu-20.04, -Dbuildtype=debug -Db_lto=false -Drepl=true)	1m 25s
compile (ubuntu-20.04, -Dbuildtype=debug -Db_lto=false -Dthreadsafety=true)	1m 11s
compile (ubuntu-latest)	2m 36s
compile (ubuntu-latest, -Dbuildtype=debug -Db_lto=false)	1m 49s
compile (ubuntu-latest, -Dbuildtype=debug -Db_lto=false -Dplugin-syscalls=false)	1m 14s
compile (ubuntu-latest, -Dbuildtype=debug -Db_lto=false -Db_sanitize=address,undefined)	2m 30s
compile (ubuntu-latest, -Dbuildtype=debug -Db_lto=false -Drepl=true)	1m 19s
compile (ubuntu-latest, -Dbuildtype=debug -Db_lto=false -Dthreadsafety=true)	1m 15s
	56m 37s

Provide feedback