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Fix UB when casting NaN to ut64 in RRegValue

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pancake 2022-05-08 04:23:44 +02:00 committed by pancake
parent 224b377aa0
commit 94c1b6f7cb
1 changed files with 10 additions and 3 deletions
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13
libr/reg/rvalue.c
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@ -1,7 +1,8 @@
/* radare - LGPL - Copyright 2009-2021 - pancake */
/* radare - LGPL - Copyright 2009-2022 - pancake */
#include <r_reg.h>
#include <r_util.h>
#include <math.h>
typedef ut32 ut27;
static ut27 r_read_me27(const ut8 *buf, int boff) {
@ -123,11 +124,17 @@ R_API ut64 r_reg_get_value(RReg *reg, RRegItem *item) {
case 80: // long double
case 96: // long floating value
// FIXME: It is a precision loss, please implement me properly!
return (ut64)r_reg_get_longdouble (reg, item);
{
long double ld = r_reg_get_longdouble (reg, item);
return isnan (ld)? UT64_MAX: (ut64)ld;
}
case 128:
case 256:
// XXX 128 & 256 bit
return (ut64)r_reg_get_longdouble (reg, item);
{
long double ld = r_reg_get_longdouble (reg, item);
return isnan (ld)? UT64_MAX: (ut64)ld;
}
default:
eprintf ("r_reg_get_value: Bit size %d not supported\n", item->size);
break;