Mercurial > cpython-lru_cache-weakref
diff Objects/unicodeobject.c @ 21082:c8d775b9ff92 legacy-trunk
formatfloat(), formatint(): Conversion of sprintf() to PyOS_snprintf()
for buffer overrun avoidance.
| author | Barry Warsaw <barry@python.org> |
|---|---|
| date | Wed, 28 Nov 2001 21:00:41 +0000 |
| parents | c9c4c523dcbf |
| children | e8fea95a82a4 |
line wrap: on
line diff
--- a/Objects/unicodeobject.c Wed Nov 28 20:56:44 2001 +0000 +++ b/Objects/unicodeobject.c Wed Nov 28 21:00:41 2001 +0000 @@ -5080,7 +5080,8 @@ prec = 6; if (type == 'f' && (fabs(x) / 1e25) >= 1e25) type = 'g'; - sprintf(fmt, "%%%s.%d%c", (flags & F_ALT) ? "#" : "", prec, type); + PyOS_snprintf(fmt, sizeof(fmt), "%%%s.%d%c", + (flags & F_ALT) ? "#" : "", prec, type); /* worst case length calc to ensure no buffer overrun: fmt = %#.<prec>g buf = '-' + [0-9]*prec + '.' + 'e+' + (longest exp @@ -5151,15 +5152,16 @@ */ if (x == 0 && (flags & F_ALT) && (type == 'x' || type == 'X')) { /* Only way to know what the platform does is to try it. */ - sprintf(fmt, type == 'x' ? "%#x" : "%#X", 0); + PyOS_snprintf(fmt, sizeof(fmt), type == 'x' ? "%#x" : "%#X", 0); if (fmt[1] != (char)type) { /* Supply our own leading 0x/0X -- needed under std C */ use_native_c_format = 0; - sprintf(fmt, "0%c%%#.%dl%c", type, prec, type); + PyOS_snprintf(fmt, sizeof(fmt), "0%c%%#.%dl%c", type, prec, type); } } if (use_native_c_format) - sprintf(fmt, "%%%s.%dl%c", (flags & F_ALT) ? "#" : "", prec, type); + PyOS_snprintf(fmt, sizeof(fmt), "%%%s.%dl%c", + (flags & F_ALT) ? "#" : "", prec, type); return usprintf(buf, fmt, x); }