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8338449: ubsan: division by zero in sharedRuntimeTrans.cpp

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Reviewed-by: mdoerr
Backport-of: 37cfaa8deb
This commit is contained in:
Matthias Baesken
2024-11-18 14:03:05 +00:00
committed by Vitaly Provodin
parent db82e5bd1c
commit 51773f0e61
1 changed files with 13 additions and 1 deletions
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14
src/hotspot/share/runtime/sharedRuntimeTrans.cpp
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@@ -26,6 +26,9 @@
#include "jni.h"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "sanitizers/ub.hpp"
#include <limits>
// This file contains copies of the fdlibm routines used by
// StrictMath. It turns out that it is almost always required to use
@@ -110,11 +113,14 @@ ln2_hi = 6.93147180369123816490e-01, /* 3fe62e42 fee00000 */
static double zero = 0.0;
ATTRIBUTE_NO_UBSAN
static double __ieee754_log(double x) {
double hfsq,f,s,z,R,w,t1,t2,dk;
int k,hx,i,j;
unsigned lx;
static_assert(std::numeric_limits<double>::is_iec559, "IEEE 754 required");
hx = high(x); /* high word of x */
lx = low(x); /* low word of x */
@@ -204,11 +210,14 @@ ivln10 = 4.34294481903251816668e-01, /* 0x3FDBCB7B, 0x1526E50E */
log10_2hi = 3.01029995663611771306e-01, /* 0x3FD34413, 0x509F6000 */
log10_2lo = 3.69423907715893078616e-13; /* 0x3D59FEF3, 0x11F12B36 */
ATTRIBUTE_NO_UBSAN
static double __ieee754_log10(double x) {
double y,z;
int i,k,hx;
unsigned lx;
static_assert(std::numeric_limits<double>::is_iec559, "IEEE 754 required");
hx = high(x); /* high word of x */
lx = low(x); /* low word of x */
@@ -440,13 +449,16 @@ bp[] = {1.0, 1.5,},
ivln2_h = 1.44269502162933349609e+00, /* 0x3FF71547, 0x60000000 =24b 1/ln2*/
ivln2_l = 1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/
double __ieee754_pow(double x, double y) {
ATTRIBUTE_NO_UBSAN
static double __ieee754_pow(double x, double y) {
double z,ax,z_h,z_l,p_h,p_l;
double y1,t1,t2,r,s,t,u,v,w;
int i0,i1,i,j,k,yisint,n;
int hx,hy,ix,iy;
unsigned lx,ly;
static_assert(std::numeric_limits<double>::is_iec559, "IEEE 754 required");
i0 = ((*(int*)&one)>>29)^1; i1=1-i0;
hx = high(x); lx = low(x);
hy = high(y); ly = low(y);