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followup for cid 1004EE408E1382C1752 and 1004EE40DDD498FBB0D:

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do a mirtoconf run-time check (ugh) to see whether the CPU designers
smoked/were brain-dead or if we don’t actually need the manual check
This commit is contained in:
tg
2011-12-31 02:04:18 +00:00
parent 25f413bf7d
commit 7ec1ae3771
3 changed files with 69 additions and 5 deletions
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6
expr.c
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@ -22,7 +22,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/expr.c,v 1.52 2011/12/16 20:03:02 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/expr.c,v 1.53 2011/12/31 02:04:18 tg Exp $");
/* The order of these enums is constrained by the order of opinfo[] */
enum token {
@ -366,21 +366,25 @@ evalexpr(Expr_state *es, int prec)
break;
case O_DIV:
case O_DIVASN:
#if !HAVE_SILENT_IDIVWRAPV
if (!es->natural && vr->val.i == -1 &&
vl->val.i == ((mksh_ari_t)1 << 31)) {
/* -2147483648 / -1 = 2147483648 */
/* 80000000 / FFFFFFFF = 80000000 */
res = ((mksh_ari_t)1 << 31);
} else
#endif
res = bivui(vl, /, vr);
break;
case O_MOD:
case O_MODASN:
#if !HAVE_SILENT_IDIVWRAPV
if (!es->natural && vr->val.i == -1 &&
vl->val.i == ((mksh_ari_t)1 << 31)) {
/* -2147483648 % -1 = 0 */
res = 0;
} else
#endif
res = bivui(vl, %, vr);
break;
case O_PLUS: