Op 27-11-18 om 17:24 schreef Martijn Dekker:
Big bad bug: it appears that subshells always return status 0 in traps. Bug found in dash 0.5.9 and later.
In fact, the bug exists on at least dash 0.5.6 and possibly earlier (earlier versions don't compile for me) if the exit occurs due to a failure in an assignment or special builtin.
$ cat BUG_TRAPSUB0.sh (trap '(! :) && echo BUG1' EXIT) (trap '(false) && echo BUG2' EXIT) (trap 'readonly foo=bar; (foo=baz) && echo BUG3' EXIT) (trap '(set -o bad@option) && echo BUG4' EXIT) $ dash-0.5.6 BUG_TRAPSUB0.sh BUG_TRAPSUB0.sh: 1: foo: is read only BUG3 set: 1: Illegal option -o bad@option BUG4 $ # [Same for 0.5.6.1, 0.5.7, 0.5.8] $ dash-0.5.9 BUG_TRAPSUB0.sh BUG1 BUG2 BUG_TRAPSUB0.sh: 1: BUG_TRAPSUB0.sh: foo: is read only BUG3 BUG_TRAPSUB0.sh: 1: set: Illegal option -o bad@option BUG4 $ # [Same for 0.5.9.1, 0.5.10, 0.5.10.1, 0.5.10.2] Thanks, - M.
