diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/strfmon_l.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/stdlib/strfmon_l.c b/stdlib/strfmon_l.c index c9f3a47b41..8e63d459e3 100644 --- a/stdlib/strfmon_l.c +++ b/stdlib/strfmon_l.c @@ -1,5 +1,5 @@ /* Formatting a monetary value according to the given locale. - Copyright (C) 1996, 1997, 2002, 2004, 2006 Free Software Foundation, Inc. + Copyright (C) 1996,1997,2002,2004,2006,2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -133,7 +133,7 @@ __vstrfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, int done; const char *currency_symbol; size_t currency_symbol_len; - int width; + long int width; char *startp; const void *ptr; char space_char; @@ -221,13 +221,21 @@ __vstrfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, while (isdigit (*++fmt)) { - width *= 10; - width += to_digit (*fmt); + int val = to_digit (*fmt); + + if (width > LONG_MAX / 10 + || (width == LONG_MAX && val > LONG_MAX % 10)) + { + __set_errno (E2BIG); + return -1; + } + + width = width * 10 + val; } /* If we don't have enough room for the demanded width we can stop now and return an error. */ - if (dest + width >= s + maxsize) + if (width >= maxsize - (dest - s)) { __set_errno (E2BIG); return -1; @@ -560,7 +568,7 @@ __vstrfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, out_char (space_char); out_nstring (currency_symbol, currency_symbol_len); } - + if (sign_posn == 4) { if (sep_by_space == 2) @@ -589,9 +597,8 @@ __vstrfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, while (dest - startp < width); else { - int dist = width - (dest - startp); - char *cp; - for (cp = dest - 1; cp >= startp; --cp) + long int dist = width - (dest - startp); + for (char *cp = dest - 1; cp >= startp; --cp) cp[dist] = cp[0]; dest += dist; |