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Add regress test for redirection in DEBUG trap action (re: 2a835a2d)

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Turns out the previous commit also fixed the bug that disables the
DEBUG trap if a redirection is used in a DEBUG trap action -- in
other words, that's the same bug.

src/cmd/ksh93/tests/basic.sh:
- Add test from the reproducer in the bug report.

Makes progress on: https://github.com/ksh93/ksh/issues/155
This commit is contained in:
Martijn Dekker 2021-01-24 03:51:00 +00:00
parent 2a835a2d8a
commit e664b78f98
2 changed files with 15 additions and 1 deletions
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15
src/cmd/ksh93/tests/basic.sh
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@ -745,6 +745,20 @@ got=$(eval 'x=`for i in test; do case $i in test) true;; esac; done`' 2>&1) \
|| err_exit "case in a for loop inside a \`comsub\` caused syntax error (got $(printf %q "$got"))"
# ======
# Redirecting disabled the DEBUG trap
# https://github.com/ksh93/ksh/issues/155 (#1)
exp=$'LINENO: 4\nfoo\nLINENO: 5\nLINENO: 6\nbar\nLINENO: 7\nbaz'
got=$({ "$SHELL" -c '
PATH=/dev/null
trap "echo LINENO: \$LINENO >&1" DEBUG # 3
echo foo # 4
var=$(echo) # 5
echo bar # 6
echo baz # 7
'; } 2>&1)
((!(e = $?))) && [[ $got == "$exp" ]] || err_exit 'Redirection in DEBUG trap corrupts the trap' \
"(got status $e$( ((e>128)) && print -n / && kill -l "$e"), $(printf %q "$got"))"
# The DEBUG trap crashed when re-trapping inside a subshell
# https://github.com/ksh93/ksh/issues/155 (#2)
exp=$'trap -- \': main\' EXIT\ntrap -- \': main\' ERR\ntrap -- \': main\' KEYBD\ntrap -- \': main\' DEBUG'
@ -760,7 +774,6 @@ got=$({ "$SHELL" -c '
((!(e = $?))) && [[ $got == "$exp" ]] || err_exit 'Pseudosignal trap failed when re-trapping in subshell' \
"(got status $e$( ((e>128)) && print -n / && kill -l "$e"), $(printf %q "$got"))"
# ======
# The DEBUG trap had side effects on the exit status
# https://github.com/ksh93/ksh/issues/155 (#4)
trap ':' DEBUG