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* string/Makefile (tst-strxfrm2-ENV): Define.

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* string/strxfrm_l.c (STRXFRM): Fix trailing \1 optimization
	if N is one bigger than return value.
	* string/tst-strxfrm2.c (do_test): Also test strxfrm with l1 + 1
	and l1 last arguments, if buf is defined, verify the return value
	equals to strlen (buf) and verify no byte beyond passed length
	is modified.

	* string/Makefile (tests): Add tst-strxfrm2.
	* string/tst-strxfrm2.c: New file.

	* string/strxfrm_l.c (STRXFRM): Do the trailing \1 removal
	optimization even if needed > n.
This commit is contained in:
Jakub Jelinek 2007-01-12 18:02:24 +00:00
parent cf7056af7b
commit 2d54f6629e
3 changed files with 33 additions and 6 deletions
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23
ChangeLog
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@ -1,3 +1,26 @@
2007-01-03 Ulrich Drepper <drepper@redhat.com>
* string/Makefile (tst-strxfrm2-ENV): Define.
2006-11-10 Jakub Jelinek <jakub@redhat.com>
* string/strxfrm_l.c (STRXFRM): Fix trailing \1 optimization
if N is one bigger than return value.
* string/tst-strxfrm2.c (do_test): Also test strxfrm with l1 + 1
and l1 last arguments, if buf is defined, verify the return value
equals to strlen (buf) and verify no byte beyond passed length
is modified.
2006-11-09 Ulrich Drepper <drepper@redhat.com>
* string/Makefile (tests): Add tst-strxfrm2.
* string/tst-strxfrm2.c: New file.
2006-11-08 Jakub Jelinek <jakub@redhat.com>
* string/strxfrm_l.c (STRXFRM): Do the trailing \1 removal
optimization even if needed > n.
2006-12-22 Gavin Romig-Koch <gavin@redhat.com>
* nis/nss_compat/compat-grp.c (internal_getgrgid_r): Don't

5
string/Makefile
View File

@ -1,4 +1,4 @@
# Copyright (C) 1991-2002, 2005, 2006 Free Software Foundation, Inc.
# Copyright (C) 1991-2002, 2005, 2006, 2007 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@ -54,7 +54,7 @@ tests := tester inl-tester noinl-tester testcopy test-ffs \
bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap \
tst-strtok tst-strxfrm bug-strcoll1 tst-strfry \
bug-strtok1 $(addprefix test-,$(strop-tests)) \
bug-envz1
bug-envz1 tst-strxfrm2
distribute := memcopy.h pagecopy.h tst-svc.expect test-string.h
@ -64,6 +64,7 @@ tester-ENV = LANGUAGE=C
inl-tester-ENV = LANGUAGE=C
noinl-tester-ENV = LANGUAGE=C
tst-strxfrm-ENV = LOCPATH=$(common-objpfx)localedata
tst-strxfrm2-ENV = LOCPATH=$(common-objpfx)localedata
bug-strcoll1-ENV = LOCPATH=$(common-objpfx)localedata
CFLAGS-inl-tester.c = -fno-builtin
CFLAGS-noinl-tester.c = -fno-builtin

11
string/strxfrm_l.c
View File

@ -1,4 +1,5 @@
/* Copyright (C) 1995,96,97,2002, 2004, 2005 Free Software Foundation, Inc.
/* Copyright (C) 1995, 1996, 1997, 2002, 2004, 2005, 2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.org>, 1995.
@ -96,6 +97,7 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n, __locale_t l)
const int32_t *indirect;
uint_fast32_t pass;
size_t needed;
size_t last_needed;
const USTRING_TYPE *usrc;
size_t srclen = STRLEN (src);
int32_t *idxarr;
@ -197,6 +199,7 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n, __locale_t l)
this is true for all of them. */
int position = rule & sort_position;
last_needed = needed;
if (position == 0)
{
for (idxcnt = 0; idxcnt < idxmax; ++idxcnt)
@ -426,11 +429,11 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n, __locale_t l)
a `position' rule at the end and if no non-ignored character
is found the last \1 byte is immediately followed by a \0 byte
signalling this. We can avoid the \1 byte(s). */
if (needed <= n && needed > 2 && dest[needed - 2] == L('\1'))
if (needed > 2 && needed == last_needed + 1)
{
/* Remove the \1 byte. */
--needed;
dest[needed - 1] = L('\0');
if (--needed <= n)
dest[needed - 1] = L('\0');
}
/* Free the memory if needed. */