diff options
Diffstat (limited to 'wcsmbs/mbrtowc.c')
| -rw-r--r-- | wcsmbs/mbrtowc.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/wcsmbs/mbrtowc.c b/wcsmbs/mbrtowc.c index de79e10..6932b04 100644 --- a/wcsmbs/mbrtowc.c +++ b/wcsmbs/mbrtowc.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1996,1997,1998,1999,2000,2002 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2004 + Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.org>, 1996. @@ -40,7 +41,7 @@ __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps) int status; size_t result; size_t dummy; - const unsigned char *inbuf; + const unsigned char *inbuf, *endbuf; char *outbuf = (char *) (pwc ?: buf); const struct gconv_fcts *fcts; @@ -69,8 +70,11 @@ __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps) /* Do a normal conversion. */ inbuf = (const unsigned char *) s; + endbuf = inbuf + n; + if (__builtin_expect (endbuf < inbuf, 0)) + endbuf = (const unsigned char *) ~(uintptr_t) 0; status = DL_CALL_FCT (fcts->towc->__fct, - (fcts->towc, &data, &inbuf, inbuf + n, + (fcts->towc, &data, &inbuf, endbuf, NULL, &dummy, 0, 1)); /* There must not be any problems with the conversion but illegal input |