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coreutils/sort-keycompare-mb.patch

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Subject: sort i18n: make sure to NUL-terminate the sort keys
Fixes http://bugs.gnu.org/18540
* src/sort.c (keycompare_mb): use the keys alone, i.e. null-terminated.
Patch analogously to non-multibyte upstream patch:
http://git.sv.gnu.org/cgit/coreutils.git/commit/?id=b877ea4b3e
* tests/misc/sort.pl (23): Add test, taken from upstream patch:
http://git.sv.gnu.org/cgit/coreutils.git/commit/?id=4d8c4dfc21
(11a): Exempt from MB run, as the collation order in the French
locale would provoke a false positive, because the strcoll() comparison
between the trailing blank and tabs leads to a different result there.
(11b): Likewise.
---
src/sort.c | 22 ++++++++++++++++++++--
tests/misc/sort.pl | 5 +++++
2 files changed, 25 insertions(+), 2 deletions(-)
Index: src/sort.c
===================================================================
--- src/sort.c.orig
+++ src/sort.c
@@ -3236,6 +3236,9 @@ keycompare_mb (const struct line *a, con
size_t lena = lima <= texta ? 0 : lima - texta;
size_t lenb = limb <= textb ? 0 : limb - textb;
+ char enda IF_LINT (= 0);
+ char endb IF_LINT (= 0);
+
char const *translate = key->translate;
bool const *ignore = key->ignore;
@@ -3253,6 +3256,12 @@ keycompare_mb (const struct line *a, con
texta = copy_a; textb = copy_b;
lena = new_len_a; lenb = new_len_b;
}
+ else
+ {
+ /* Use the keys in-place, temporarily null-terminated. */
+ enda = texta[lena]; texta[lena] = '\0';
+ endb = textb[lenb]; textb[lenb] = '\0';
+ }
if (key->random)
diff = compare_random (texta, lena, textb, lenb);
@@ -3276,13 +3285,22 @@ keycompare_mb (const struct line *a, con
diff = 1;
else if (hard_LC_COLLATE && !folding)
{
- diff = xmemcoll0 (texta, lena, textb, lenb);
+ diff = xmemcoll0 (texta, lena + 1, textb, lenb + 1);
}
else
- diff = memcmp (texta, textb, MIN (lena + 1,lenb + 1));
+ {
+ diff = memcmp (texta, textb, MIN (lena, lenb));
+ if (diff == 0)
+ diff = lena < lenb ? -1 : lena != lenb;
+ }
if (ignore || translate)
free (texta);
+ else
+ {
+ texta[lena] = enda;
+ textb[lenb] = endb;
+ }
if (diff)
goto not_equal;
Index: tests/misc/sort.pl
===================================================================
--- tests/misc/sort.pl.orig
+++ tests/misc/sort.pl
@@ -322,6 +322,10 @@ my @Tests =
["22a", '-k 2,2fd -k 1,1r', {IN=>"3 b\n4 B\n"}, {OUT=>"4 B\n3 b\n"}],
["22b", '-k 2,2d -k 1,1r', {IN=>"3 b\n4 b\n"}, {OUT=>"4 b\n3 b\n"}],
+# This fails in Fedora 20, per Göran Uddeborg in: http://bugs.gnu.org/18540
+["23", '-s -k1,1 -t/', {IN=>"a b/x\na-b-c/x\n"}, {OUT=>"a b/x\na-b-c/x\n"},
+ {ENV => "LC_ALL=$mb_locale"}],
+
["no-file1", 'no-file', {EXIT=>2}, {ERR=>$no_file}],
# This test failed until 1.22f. Sort didn't give an error.
# From Will Edgington.
@@ -446,6 +450,7 @@ if ($mb_locale ne 'C')
#disable several failing tests until investigation, disable all tests with envvars set
next if (grep {ref $_ eq 'HASH' && exists $_->{ENV}} (@new_t));
next if ($test_name =~ "18g" or $test_name =~ "sort-numeric" or $test_name =~ "08[ab]" or $test_name =~ "03[def]" or $test_name =~ "h4" or $test_name =~ "n1" or $test_name =~ "2[01]a");
+ next if ($test_name =~ "11[ab]"); # avoid FP: expected result differs to MB result due to collation rules.
push @new, ["$test_name-mb", @new_t, {ENV => "LC_ALL=$mb_locale"}];
}
push @Tests, @new;