| 1 | #!/bin/sh
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| 2 | # grep -z with an anchor in the regex could mistakenly match text
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| 3 | # including a newline.
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| 4 |
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| 5 | # Copyright 2016-2021 Free Software Foundation, Inc.
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| 6 |
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| 7 | # This program is free software: you can redistribute it and/or modify
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| 8 | # it under the terms of the GNU General Public License as published by
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| 9 | # the Free Software Foundation, either version 3 of the License, or
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| 10 | # (at your option) any later version.
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| 11 |
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| 12 | # This program is distributed in the hope that it will be useful,
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | # GNU General Public License for more details.
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| 16 |
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| 17 | # You should have received a copy of the GNU General Public License
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| 18 | # along with this program. If not, see <https://www.gnu.org/licenses/>.
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| 19 |
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| 20 | . "${srcdir=.}/init.sh"; path_prepend_ ../src
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| 21 |
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| 22 | require_en_utf8_locale_
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| 23 | require_compiled_in_MB_support
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| 24 | LC_ALL=en_US.UTF-8
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| 25 |
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| 26 | printf 'a\nb\0' > in || framework_failure_
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| 27 |
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| 28 | fail=0
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| 29 |
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| 30 | # These three would all mistakenly match, because the [a-b] range
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| 31 | # forced the non-DFA (regexp-using) code path.
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| 32 | returns_ 1 grep -z '^[a-b]*$' in || fail=1
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| 33 | returns_ 1 grep -z 'a[a-b]*$' in || fail=1
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| 34 | returns_ 1 grep -z '^[a-b]*b' in || fail=1
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| 35 |
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| 36 | # Test these for good measure; they exercise the DFA code path
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| 37 | # and always worked
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| 38 | returns_ 1 grep -z '^[ab]*$' in || fail=1
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| 39 | returns_ 1 grep -z 'a[ab]*$' in || fail=1
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| 40 | returns_ 1 grep -z '^[ab]*b' in || fail=1
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| 41 |
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| 42 | Exit $fail
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