Commit ca2d6274 authored by Paul Eggert's avatar Paul Eggert

Improve comment.

parent 283cdbef
......@@ -199,11 +199,11 @@ doprnt (char *buffer, register size_t bufsize, const char *format,
while (fmt < format_end
&& '0' <= fmt[1] && fmt[1] <= '9')
{
/* Avoid int overflow, because many sprintfs seriously
mess up with widths or precisions greater than
INT_MAX. Avoid size_t overflow, since our counters
use size_t. This test is slightly conservative, for
speed and simplicity. */
/* Avoid size_t overflow. Avoid int overflow too, as
many sprintfs mishandle widths greater than INT_MAX.
This test is simple but slightly conservative: e.g.,
(INT_MAX - INT_MAX % 10) is reported as an overflow
even when it's not. */
if (n >= min (INT_MAX, SIZE_MAX) / 10)
error ("Format width or precision too large");
n = n * 10 + fmt[1] - '0';
......
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