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461 lines
16 KiB
C
461 lines
16 KiB
C
/* Copyright (C) 1997-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <wordexp.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <libc-pointer-arith.h>
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#include <array_length.h>
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#include <support/xunistd.h>
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#include <support/check.h>
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#include <support/next_to_fault.h>
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#define IFS " \n\t"
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struct test_case_struct
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{
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int retval;
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const char *env;
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const char *words;
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int flags;
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size_t wordc;
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const char *wordv[10];
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const char *ifs;
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} static test_case[] =
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{
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/* Simple word- and field-splitting */
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{ 0, NULL, "one", 0, 1, { "one", }, IFS },
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{ 0, NULL, "one two", 0, 2, { "one", "two", }, IFS },
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{ 0, NULL, "one two three", 0, 3, { "one", "two", "three", }, IFS },
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{ 0, NULL, " \tfoo\t\tbar ", 0, 2, { "foo", "bar", }, IFS },
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{ 0, NULL, "red , white blue", 0, 4, { "red", ",", "white", "blue", }, " ," },
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{ 0, NULL, "one two three", 0, 3, { "one", "two", "three", }, "" },
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{ 0, NULL, "one \"two three\"", 0, 2, { "one", "two three", }, IFS },
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{ 0, NULL, "one \"two three\"", 0, 2, { "one", "two three", }, "" },
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{ 0, "two three", "one \"$var\"", 0, 2, { "one", "two three", }, IFS },
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{ 0, "two three", "one $var", 0, 3, { "one", "two", "three", }, IFS },
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{ 0, "two three", "one \"$var\"", 0, 2, { "one", "two three", }, "" },
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{ 0, "two three", "one $var", 0, 2, { "one", "two three", }, "" },
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/* The non-whitespace IFS char at the end delimits the second field
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* but does NOT start a new field. */
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{ 0, ":abc:", "$var", 0, 2, { "", "abc", }, ":" },
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{ 0, NULL, "$(echo :abc:)", 0, 2, { "", "abc", }, ":" },
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{ 0, NULL, "$(echo :abc:\\ )", 0, 2, { "", "abc", }, ": " },
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{ 0, NULL, "$(echo :abc\\ )", 0, 2, { "", "abc", }, ": " },
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{ 0, ":abc:", "$(echo $var)", 0, 2, { "", "abc", }, ":" },
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{ 0, NULL, ":abc:", 0, 1, { ":abc:", }, ":" },
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{ 0, NULL, "$(echo :abc:)def", 0, 3, { "", "abc", "def", },
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":" },
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{ 0, NULL, "$(echo abc:de)f", 0, 2, { "abc", "def", }, ":" },
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{ 0, NULL, "$(echo abc:de)f:ghi", 0, 2, { "abc", "def:ghi", },
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":" },
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{ 0, NULL, "abc:d$(echo ef:ghi)", 0, 2, { "abc:def", "ghi", },
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":" },
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{ 0, "abc:", "$var$(echo def:ghi)", 0, 3, { "abc", "def",
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"ghi", }, ":" },
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{ 0, "abc:d", "$var$(echo ef:ghi)", 0, 3, { "abc", "def",
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"ghi", }, ":" },
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{ 0, "def:ghi", "$(echo abc:)$var", 0, 3, { "abc", "def",
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"ghi", }, ":" },
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{ 0, "ef:ghi", "$(echo abc:d)$var", 0, 3, { "abc", "def",
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"ghi", }, ":" },
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/* Simple parameter expansion */
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{ 0, "foo", "${var}", 0, 1, { "foo", }, IFS },
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{ 0, "foo", "$var", 0, 1, { "foo", }, IFS },
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{ 0, "foo", "\\\"$var\\\"", 0, 1, { "\"foo\"", }, IFS },
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{ 0, "foo", "%$var%", 0, 1, { "%foo%", }, IFS },
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{ 0, "foo", "-$var-", 0, 1, { "-foo-", }, IFS },
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/* Simple quote removal */
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{ 0, NULL, "\"quoted\"", 0, 1, { "quoted", }, IFS },
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{ 0, "foo", "\"$var\"\"$var\"", 0, 1, { "foofoo", }, IFS },
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{ 0, NULL, "'singly-quoted'", 0, 1, { "singly-quoted", }, IFS },
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{ 0, NULL, "contin\\\nuation", 0, 1, { "continuation", }, IFS },
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{ 0, NULL, "explicit ''", 0, 2, { "explicit", "", }, IFS },
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{ 0, NULL, "explicit \"\"", 0, 2, { "explicit", "", }, IFS },
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{ 0, NULL, "explicit ``", 0, 1, { "explicit", }, IFS },
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/* Simple command substitution */
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{ 0, NULL, "$(echo hello)", 0, 1, { "hello", }, IFS },
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{ 0, NULL, "$( (echo hello) )", 0, 1, { "hello", }, IFS },
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{ 0, NULL, "$((echo hello);(echo there))", 0, 2, { "hello", "there", }, IFS },
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{ 0, NULL, "`echo one two`", 0, 2, { "one", "two", }, IFS },
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{ 0, NULL, "$(echo ')')", 0, 1, { ")" }, IFS },
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{ 0, NULL, "$(echo hello; echo)", 0, 1, { "hello", }, IFS },
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{ 0, NULL, "a$(echo b)c", 0, 1, { "abc", }, IFS },
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/* Simple arithmetic expansion */
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{ 0, NULL, "$((1 + 1))", 0, 1, { "2", }, IFS },
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{ 0, NULL, "$((2-3))", 0, 1, { "-1", }, IFS },
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{ 0, NULL, "$((-1))", 0, 1, { "-1", }, IFS },
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{ 0, NULL, "$[50+20]", 0, 1, { "70", }, IFS },
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{ 0, NULL, "$(((2+3)*(4+5)))", 0, 1, { "45", }, IFS },
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{ 0, NULL, "$((010))", 0, 1, { "8" }, IFS },
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{ 0, NULL, "$((0x10))", 0, 1, { "16" }, IFS },
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{ 0, NULL, "$((010+0x10))", 0, 1, { "24" }, IFS },
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{ 0, NULL, "$((-010+0x10))", 0, 1, { "8" }, IFS },
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{ 0, NULL, "$((-0x10+010))", 0, 1, { "-8" }, IFS },
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{ 0, NULL, "$(())", 0, 1, { "0", }, IFS },
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{ 0, NULL, "$[]", 0, 1, { "0", }, IFS },
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/* Advanced parameter expansion */
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{ 0, NULL, "${var:-bar}", 0, 1, { "bar", }, IFS },
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{ 0, NULL, "${var-bar}", 0, 1, { "bar", }, IFS },
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{ 0, "", "${var:-bar}", 0, 1, { "bar", }, IFS },
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{ 0, "foo", "${var:-bar}", 0, 1, { "foo", }, IFS },
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{ 0, "", "${var-bar}", 0, 0, { NULL, }, IFS },
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{ 0, NULL, "${var:=bar}", 0, 1, { "bar", }, IFS },
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{ 0, NULL, "${var=bar}", 0, 1, { "bar", }, IFS },
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{ 0, "", "${var:=bar}", 0, 1, { "bar", }, IFS },
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{ 0, "foo", "${var:=bar}", 0, 1, { "foo", }, IFS },
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{ 0, "", "${var=bar}", 0, 0, { NULL, }, IFS },
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{ 0, "foo", "${var:?bar}", 0, 1, { "foo", }, IFS },
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{ 0, NULL, "${var:+bar}", 0, 0, { NULL, }, IFS },
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{ 0, NULL, "${var+bar}", 0, 0, { NULL, }, IFS },
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{ 0, "", "${var:+bar}", 0, 0, { NULL, }, IFS },
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{ 0, "foo", "${var:+bar}", 0, 1, { "bar", }, IFS },
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{ 0, "", "${var+bar}", 0, 1, { "bar", }, IFS },
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{ 0, "12345", "${#var}", 0, 1, { "5", }, IFS },
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{ 0, NULL, "${var:-'}'}", 0, 1, { "}", }, IFS },
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{ 0, NULL, "${var-}", 0, 0, { NULL }, IFS },
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{ 0, NULL, "${a?}", 0, 0, { NULL, }, IFS },
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{ 0, NULL, "${#a=}", 0, 1, { "0", }, IFS },
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{ 0, "pizza", "${var#${var}}", 0, 0, { NULL }, IFS },
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{ 0, "pepperoni", "${var%$(echo oni)}", 0, 1, { "pepper" }, IFS },
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{ 0, "6pack", "${var#$((6))}", 0, 1, { "pack" }, IFS },
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{ 0, "b*witched", "${var##b*}", 0, 0, { NULL }, IFS },
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{ 0, "b*witched", "${var##\"b*\"}", 0, 1, { "witched" }, IFS },
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{ 0, "banana", "${var%na*}", 0, 1, { "bana", }, IFS },
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{ 0, "banana", "${var%%na*}", 0, 1, { "ba", }, IFS },
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{ 0, "borabora-island", "${var#*bora}", 0, 1, { "bora-island", }, IFS },
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{ 0, "borabora-island", "${var##*bora}", 0, 1, { "-island", }, IFS },
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{ 0, "coconut", "${var##\\*co}", 0, 1, { "coconut", }, IFS },
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{ 0, "100%", "${var%0%}", 0, 1, { "10" }, IFS },
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/* Pathname expansion */
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{ 0, NULL, "???", 0, 2, { "one", "two", }, IFS },
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{ 0, NULL, "[ot]??", 0, 2, { "one", "two", }, IFS },
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{ 0, NULL, "t*", 0, 2, { "three", "two", }, IFS },
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{ 0, NULL, "\"t\"*", 0, 2, { "three", "two", }, IFS },
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/* Nested constructs */
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{ 0, "one two", "$var", 0, 2, { "one", "two", }, IFS },
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{ 0, "one two three", "$var", 0, 3, { "one", "two", "three", }, IFS },
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{ 0, " \tfoo\t\tbar ", "$var", 0, 2, { "foo", "bar", }, IFS },
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{ 0, " red , white blue", "$var", 0, 3, { "red", "white", "blue", }, ", \n\t" },
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{ 0, " red , white blue", "\"$var\"", 0, 1, { " red , white blue", }, ", \n\t" },
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{ 0, NULL, "\"$(echo hello there)\"", 0, 1, { "hello there", }, IFS },
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{ 0, NULL, "\"$(echo \"hello there\")\"", 0, 1, { "hello there", }, IFS },
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{ 0, NULL, "${var=one two} \"$var\"", 0, 3, { "one", "two", "one two", }, IFS },
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{ 0, "1", "$(( $(echo 3)+$var ))", 0, 1, { "4", }, IFS },
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{ 0, NULL, "\"$(echo \"*\")\"", 0, 1, { "*", }, IFS },
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{ 0, NULL, "\"a\n\n$(echo)b\"", 0, 1, { "a\n\nb", }, IFS },
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{ 0, "foo", "*$var*", 0, 1, { "*foo*", }, IFS },
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{ 0, "o thr", "*$var*", 0, 2, { "two", "three" }, IFS },
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/* Different IFS values */
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{ 0, "a b\tc\nd ", "$var", 0, 4, { "a", "b", "c", "d" }, NULL /* unset */ },
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{ 0, "a b\tc d ", "$var", 0, 1, { "a b\tc d " }, "" /* `null' */ },
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{ 0, "a,b c\n, d", "$var", 0, 3, { "a", "b c", " d" }, "\t\n," },
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/* Other things that should succeed */
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{ 0, NULL, "\\*\"|&;<>\"\\(\\)\\{\\}", 0, 1, { "*|&;<>(){}", }, IFS },
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{ 0, "???", "$var", 0, 1, { "???", }, IFS },
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{ 0, NULL, "$var", 0, 0, { NULL, }, IFS },
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{ 0, NULL, "\"\\n\"", 0, 1, { "\\n", }, IFS },
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{ 0, NULL, "", 0, 0, { NULL, }, IFS },
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{ 0, NULL, "${1234567890123456789012}", 0, 0, { NULL, }, IFS },
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/* Flags not already covered (testit() has special handling for these) */
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{ 0, NULL, "one two", WRDE_DOOFFS, 2, { "one", "two", }, IFS },
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{ 0, NULL, "appended", WRDE_APPEND, 3, { "pre1", "pre2", "appended", }, IFS },
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{ 0, NULL, "appended", WRDE_DOOFFS|WRDE_APPEND, 3, { "pre1", "pre2", "appended", }, IFS },
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/* Things that should fail */
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{ WRDE_BADCHAR, NULL, "new\nline", 0, 0, { NULL, }, "" /* \n not IFS */ },
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{ WRDE_BADCHAR, NULL, "pipe|symbol", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "&ersand", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "semi;colon", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "<greater", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "less>", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "(open-paren", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "close-paren)", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "{open-brace", 0, 0, { NULL, }, IFS },
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{ WRDE_BADCHAR, NULL, "close-brace}", 0, 0, { NULL, }, IFS },
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{ WRDE_BADVAL, NULL, "$var", WRDE_UNDEF, 0, { NULL, }, IFS },
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{ WRDE_BADVAL, NULL, "$9", WRDE_UNDEF, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "$[50+20))", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "${%%noparam}", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "${missing-brace", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "$(for i in)", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "$((2+))", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "`", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "$((010+4+))", 0, 0, { NULL }, IFS },
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{ WRDE_SYNTAX, NULL, "`\\", 0, 0, { NULL, }, IFS }, /* BZ 18042 */
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{ WRDE_SYNTAX, NULL, "${", 0, 0, { NULL, }, IFS }, /* BZ 18043 */
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{ WRDE_SYNTAX, NULL, "L${a:", 0, 0, { NULL, }, IFS }, /* BZ 18043#c4 */
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};
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static int testit (struct test_case_struct *tc);
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static int tests;
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static void
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command_line_test (const char *words)
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{
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wordexp_t we;
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int i;
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int retval = wordexp (words, &we, 0);
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printf ("info: wordexp returned %d\n", retval);
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for (i = 0; i < we.we_wordc; i++)
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printf ("info: we_wordv[%d] = \"%s\"\n", i, we.we_wordv[i]);
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}
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static int
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do_test (int argc, char *argv[])
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{
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const char *globfile[] = { "one", "two", "three" };
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char tmpdir[32];
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struct passwd *pw;
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const char *cwd;
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int test;
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struct test_case_struct ts;
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if (argc > 1)
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{
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command_line_test (argv[1]);
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return 0;
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}
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cwd = getcwd (NULL, 0);
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/* Set up arena for pathname expansion */
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if (!tmpnam (tmpdir))
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{
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printf ("Failed to create a temporary directory with a unique name: %m");
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return 1;
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}
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xmkdir (tmpdir, S_IRWXU);
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TEST_VERIFY_EXIT (chdir (tmpdir) == 0);
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for (int i = 0; i < array_length (globfile); ++i)
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{
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int fd = xopen (globfile[i], O_WRONLY|O_CREAT|O_TRUNC,
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S_IRUSR | S_IWUSR);
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xclose (fd);
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}
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for (test = 0; test < array_length (test_case); test++)
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TEST_COMPARE (testit (&test_case[test]), 0);
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/* Tilde-expansion tests. */
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pw = getpwnam ("root");
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if (pw != NULL)
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{
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ts.retval = 0;
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ts.env = NULL;
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ts.words = "~root ";
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ts.flags = 0;
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ts.wordc = 1;
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ts.wordv[0] = pw->pw_dir;
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ts.ifs = IFS;
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TEST_COMPARE (testit (&ts), 0);
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ts.retval = 0;
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ts.env = pw->pw_dir;
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ts.words = "${var#~root}x";
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ts.flags = 0;
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ts.wordc = 1;
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ts.wordv[0] = "x";
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ts.ifs = IFS;
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TEST_COMPARE (testit (&ts), 0);
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}
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/* "~" expands to value of $HOME when HOME is set */
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setenv ("HOME", "/dummy/home", 1);
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ts.retval = 0;
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ts.env = NULL;
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ts.words = "~ ~/foo";
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ts.flags = 0;
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ts.wordc = 2;
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ts.wordv[0] = "/dummy/home";
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ts.wordv[1] = "/dummy/home/foo";
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ts.ifs = IFS;
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TEST_COMPARE (testit (&ts), 0);
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/* "~" expands to home dir from passwd file if HOME is not set */
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pw = getpwuid (getuid ());
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if (pw != NULL)
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{
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unsetenv ("HOME");
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ts.retval = 0;
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ts.env = NULL;
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ts.words = "~";
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ts.flags = 0;
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ts.wordc = 1;
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ts.wordv[0] = pw->pw_dir;
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ts.ifs = IFS;
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TEST_COMPARE (testit (&ts), 0);
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}
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puts ("tests completed, now cleaning up");
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/* Clean up */
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for (int i = 0; i < array_length (globfile); ++i)
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remove (globfile[i]);
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if (cwd == NULL)
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cwd = "..";
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xchdir (cwd);
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rmdir (tmpdir);
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return 0;
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}
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struct support_next_to_fault
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at_page_end (const char *words)
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{
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const size_t words_size = strlen (words) + 1;
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struct support_next_to_fault ntf
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= support_next_to_fault_allocate (words_size);
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/* Includes terminating NUL. */
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memcpy (ntf.buffer, words, words_size);
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return ntf;
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}
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static int
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testit (struct test_case_struct *tc)
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{
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int retval;
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wordexp_t we, sav_we;
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char *dummy;
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int bzzzt = 0;
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int start_offs = 0;
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int i;
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if (tc->env)
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setenv ("var", tc->env, 1);
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else
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unsetenv ("var");
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if (tc->ifs)
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setenv ("IFS", tc->ifs, 1);
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else
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unsetenv ("IFS");
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sav_we.we_wordc = 99;
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sav_we.we_wordv = &dummy;
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sav_we.we_offs = 3;
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we = sav_we;
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printf ("info: test %d (%s): ", ++tests, tc->words);
|
|
fflush (NULL);
|
|
struct support_next_to_fault words = at_page_end (tc->words);
|
|
|
|
if (tc->flags & WRDE_APPEND)
|
|
{
|
|
/* initial wordexp() call, to be appended to */
|
|
if (wordexp ("pre1 pre2", &we, tc->flags & ~WRDE_APPEND) != 0)
|
|
{
|
|
printf ("info: FAILED setup\n");
|
|
return 1;
|
|
}
|
|
}
|
|
retval = wordexp (words.buffer, &we, tc->flags);
|
|
|
|
if (tc->flags & WRDE_DOOFFS)
|
|
start_offs = sav_we.we_offs;
|
|
|
|
if (retval != tc->retval || (retval == 0 && we.we_wordc != tc->wordc))
|
|
bzzzt = 1;
|
|
else if (retval == 0)
|
|
{
|
|
for (i = 0; i < start_offs; ++i)
|
|
if (we.we_wordv[i] != NULL)
|
|
{
|
|
bzzzt = 1;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < we.we_wordc; ++i)
|
|
if (we.we_wordv[i+start_offs] == NULL
|
|
|| strcmp (tc->wordv[i], we.we_wordv[i+start_offs]) != 0)
|
|
{
|
|
bzzzt = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bzzzt)
|
|
{
|
|
printf ("FAILED\n");
|
|
printf ("info: Test words: <%s>, need retval %d, wordc %zd\n",
|
|
tc->words, tc->retval, tc->wordc);
|
|
if (start_offs != 0)
|
|
printf ("(preceded by %d NULLs)\n", start_offs);
|
|
printf ("Got retval %d, wordc %zd: ", retval, we.we_wordc);
|
|
if (retval == 0 || retval == WRDE_NOSPACE)
|
|
{
|
|
for (i = 0; i < we.we_wordc + start_offs; ++i)
|
|
if (we.we_wordv[i] == NULL)
|
|
printf ("NULL ");
|
|
else
|
|
printf ("<%s> ", we.we_wordv[i]);
|
|
}
|
|
printf ("\n");
|
|
}
|
|
else if (retval != 0 && retval != WRDE_NOSPACE
|
|
&& (we.we_wordc != sav_we.we_wordc
|
|
|| we.we_wordv != sav_we.we_wordv
|
|
|| we.we_offs != sav_we.we_offs))
|
|
{
|
|
bzzzt = 1;
|
|
printf ("FAILED to restore wordexp_t members\n");
|
|
}
|
|
else
|
|
printf ("OK\n");
|
|
|
|
if (retval == 0 || retval == WRDE_NOSPACE)
|
|
wordfree (&we);
|
|
|
|
support_next_to_fault_free (&words);
|
|
|
|
fflush (NULL);
|
|
return bzzzt;
|
|
}
|
|
|
|
#define TEST_FUNCTION_ARGV do_test
|
|
#include <support/test-driver.c>
|