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* iconv/gconv_simple.c (STORE_REST): Explicitly store the total
	expected size into state.
	(UNPACK_BYTES): Do the reverse.
	* wcsmbs/tst-mbrtowc.c (utf8_test_1): Add test for the bug.
	Reported by Al Viro <aviro@redhat.com>.
This commit is contained in:
Ulrich Drepper 2003-01-16 02:27:47 +00:00
parent a1a2fec161
commit ea31b613fe
3 changed files with 36 additions and 32 deletions
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6
ChangeLog
View File

@ -1,5 +1,11 @@
2003-01-15 Ulrich Drepper <drepper@redhat.com>
* iconv/gconv_simple.c (STORE_REST): Explicitly store the total
expected size into state.
(UNPACK_BYTES): Do the reverse.
* wcsmbs/tst-mbrtowc.c (utf8_test_1): Add test for the bug.
Reported by Al Viro <aviro@redhat.com>.
* stdio-common/Makefile (tests): Add bug14.
* stdio-common/bug14.c: New file.

44
iconv/gconv_simple.c
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@ -1,5 +1,5 @@
/* Simple transformations functions.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Copyright (C) 1997-2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -1031,7 +1031,7 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
correct and that it requires a larger number of bytes than there \
are in the input buffer. */ \
wint_t ch = **inptrp; \
size_t cnt; \
size_t cnt, r; \
\
state->__count = inend - *inptrp; \
\
@ -1069,16 +1069,19 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
} \
\
/* The first byte is already consumed. */ \
--cnt; \
r = cnt - 1; \
while (++(*inptrp) < inend) \
{ \
ch <<= 6; \
ch |= **inptrp & 0x3f; \
--cnt; \
--r; \
} \
\
/* Shift for the so far missing bytes. */ \
ch <<= cnt * 6; \
ch <<= r * 6; \
\
/* Store the number of bytes expected for the entire sequence. */ \
ch = ch << 3 | cnt; \
\
/* Store the value. */ \
state->__value.__wch = ch; \
@ -1086,35 +1089,14 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
#define UNPACK_BYTES \
{ \
static const unsigned char inmask[5] = { 0xc0, 0xe0, 0xf0, 0xf8, 0xfc }; \
wint_t wch = state->__value.__wch; \
size_t ntotal; \
size_t ntotal = wch & 7; \
wch >>= 3; \
\
inlen = state->__count; \
\
if (state->__value.__wch <= 0x7ff) \
{ \
bytebuf[0] = 0xc0; \
ntotal = 2; \
} \
else if (__builtin_expect (state->__value.__wch <= 0xffff, 1)) \
{ \
bytebuf[0] = 0xe0; \
ntotal = 3; \
} \
else if (__builtin_expect (state->__value.__wch < 0x1fffff, 1)) \
{ \
bytebuf[0] = 0xf0; \
ntotal = 4; \
} \
else if (__builtin_expect (state->__value.__wch < 0x3ffffff, 1)) \
{ \
bytebuf[0] = 0xf8; \
ntotal = 5; \
} \
else \
{ \
bytebuf[0] = 0xfc; \
ntotal = 6; \
} \
bytebuf[0] = inmask[ntotal - 2]; \
\
do \
{ \

18
wcsmbs/tst-mbrtowc.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
/* Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
@ -17,6 +17,8 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* We always want assert to be fully defined. */
#undef NDEBUG
#include <assert.h>
#include <locale.h>
#include <stdio.h>
@ -45,6 +47,20 @@ utf8_test_1 (void)
assert (mbrtowc (&wc, "", 1, &s) == 0); /* test final byte processing */
assert (wc == 0); /* test final byte decoding */
/* The following test is by Al Viro <aviro@redhat.com>. */
const char str[] = "\xe0\xa0\x80";
wc = 42; /* arbitrary number */
memset (&s, 0, sizeof (s)); /* get s into initial state */
assert (mbrtowc (&wc, str, 1, &s) == -2);
assert (mbrtowc (&wc, str + 1, 2, &s) == 2);
assert (wc == 0x800);
wc = 42; /* arbitrary number */
memset (&s, 0, sizeof (s)); /* get s into initial state */
assert (mbrtowc (&wc, str, 3, &s) == 3);
assert (wc == 0x800);
return 0;
}