| 1 | #!/bin/sh
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| 2 | # sed would access uninitialized memory for certain invalid backreference uses.
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| 3 | # Before sed 4.6 these would result in "Invalid read size of 4" reported
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| 4 | # by valgrind from execute.c:992
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| 5 |
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| 6 | # Copyright (C) 2018-2022 Free Software Foundation, Inc.
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| 7 |
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| 8 | # This program is free software: you can redistribute it and/or modify
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| 9 | # it under the terms of the GNU General Public License as published by
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| 10 | # the Free Software Foundation, either version 3 of the License, or
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| 11 | # (at your option) any later version.
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| 12 |
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| 13 | # This program is distributed in the hope that it will be useful,
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| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | # GNU General Public License for more details.
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| 17 |
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| 18 | # You should have received a copy of the GNU General Public License
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| 19 | # along with this program. If not, see <https://www.gnu.org/licenses/>.
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| 20 | . "${srcdir=.}/testsuite/init.sh"; path_prepend_ ./sed
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| 21 | print_ver_ sed
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| 22 |
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| 23 | require_valgrind_
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| 24 |
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| 25 | printf '1\n2\n' > in || framework_failure_
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| 26 | printf '1\n2\n\n' > exp-posix || framework_failure_
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| 27 | printf '1\n1\n2\n2\n' > exp-no-posix || framework_failure_
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| 28 |
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| 29 | #
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| 30 | # Test 1: with "--posix"
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| 31 | #
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| 32 | # using "--posix" disables the backref safety check in
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| 33 | # regexp.c:compile_regex_1(), which is reported as:
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| 34 | # "invalid reference \\%d on `s' command's RHS"
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| 35 |
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| 36 | valgrind --quiet --error-exitcode=1 \
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| 37 | sed --posix -e '/2/p ; 2s//\9/' in > out-posix 2> err-posix || fail=1
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| 38 |
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| 39 | echo "valgrind report for 'posix' test:"
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| 40 | echo "=================================="
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| 41 | cat err-posix
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| 42 | echo "=================================="
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| 43 |
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| 44 |
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| 45 | # Work around a bug in CentOS 5.10's valgrind
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| 46 | # FIXME: remove in 2018 or when CentOS 5 is no longer officially supported
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| 47 | grep 'valgrind: .*Assertion.*failed' err-posix > /dev/null \
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| 48 | && skip_ 'you seem to have a buggy version of valgrind'
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| 49 |
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| 50 | compare exp-posix out-posix || fail=1
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| 51 | compare /dev/null err || fail=1
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| 52 |
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| 53 |
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| 54 |
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| 55 | #
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| 56 | # Test 2: without "--posix"
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| 57 | #
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| 58 | # When not using "--posix", using a backref to a non-existing group
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| 59 | # would be caught in compile_regex_1.
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| 60 | # As reported in bugs.gnu.org/32082 by bugs@feusi.co,
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| 61 | # using the recent begline/endline optimization with a few "previous regex"
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| 62 | # tricks bypasses this check.
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| 63 |
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| 64 | valgrind --quiet --error-exitcode=1 \
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| 65 | sed -e '/^/s///p ; 2s//\9/' in > out-no-posix 2> err-no-posix || fail=1
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| 66 |
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| 67 | echo "valgrind report for 'no-posix' test:"
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| 68 | echo "===================================="
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| 69 | cat err-no-posix
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| 70 | echo "===================================="
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| 71 |
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| 72 | # Work around a bug in CentOS 5.10's valgrind
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| 73 | # FIXME: remove in 2018 or when CentOS 5 is no longer officially supported
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| 74 | grep 'valgrind: .*Assertion.*failed' err-no-posix > /dev/null \
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| 75 | && skip_ 'you seem to have a buggy version of valgrind'
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| 76 |
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| 77 | compare exp-no-posix out-no-posix || fail=1
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| 78 | compare /dev/null err || fail=1
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| 79 |
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| 80 |
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| 81 | Exit $fail
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