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cast two pointer arithmetics to ptrdiff_t 

commit inspired by fgsch:
> Log message:
> cast pointer arithmetic to unsigned so we can behave correctly on
> underflows. fixes fc -l 1 in my box where line is 1667511151.
> krw@ ok.

  to signed rather. oops.
This commit is contained in:
tg 2008-06-08 17:14:31 +00:00
parent e91eab65a8
commit 399157adcc
1 changed files with 3 additions and 3 deletions
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6
histrap.c
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@ -3,7 +3,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/histrap.c,v 1.62 2008/05/17 18:46:59 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/histrap.c,v 1.63 2008/06/08 17:14:31 tg Exp $");
/*-
* MirOS: This is the default mapping type, and need not be specified.
@ -351,14 +351,14 @@ hist_get(const char *str, int approx, int allow_cur)
if (getn(str, &n)) {
hp = histptr + (n < 0 ? n : (n - hist_source->line));
if (hp < history) {
if ((ptrdiff_t)hp < (ptrdiff_t)history) {
if (approx)
hp = hist_get_oldest();
else {
bi_errorf("%s: not in history", str);
hp = NULL;
}
} else if (hp > histptr) {
} else if ((ptrdiff_t)hp > (ptrdiff_t)histptr) {
if (approx)
hp = hist_get_newest(allow_cur);
else {