Hello!
cc1plus: warnings being treated as errors
/tmp/lang/openjdk7/work/openjdk/hotspot/src/share/vm/runtime/sharedRuntimeTrans.cpp:
In function 'double __ieee754_pow(double, double)':
/tmp/lang/openjdk7/work/openjdk/hotspot/src/share/vm/runtime/sharedRuntimeTrans.cpp:575:
warning: division by zero in '0.0 / 0.'
/tmp/lang/openjdk7/work/openjdk/hotspot/src/share/vm/runtime/sharedRuntimeTrans.cpp:586:
warning: division by zero in '0.0 / 0.'
gmake[6]: *** [sharedRuntimeTrans.o] Error 1
Try to outsmart compiler:
--- hotspot/src/share/vm/runtime/sharedRuntimeTrans.cpp.orig 2009-12-17
12:44:32.000000000 +0300
+++ hotspot/src/share/vm/runtime/sharedRuntimeTrans.cpp 2010-04-03
06:28:12.000000000 +0400
@@ -572,7 +572,7 @@
if(hy<0) z = one/z; /* z = (1/|x|) */
if(hx<0) {
if(((ix-0x3ff00000)|yisint)==0) {
- z = (z-z)/(z-z); /* (-1)**non-int is NaN */
+ z = strtod("0.0", NULL)/strtod("0.0", NULL); /* (-1)**non-int is NaN
*/
} else if(yisint==1)
z = -1.0*z; /* (x<0)**odd = -(|x|**odd) */
}
@@ -583,7 +583,7 @@
n = (hx>>31)+1;
/* (x<0)**(non-int) is NaN */
- if((n|yisint)==0) return (x-x)/(x-x);
+ if((n|yisint)==0) return strtod("0.0", NULL)/strtod("0.0", NULL);
s = one; /* s (sign of result -ve**odd) = -1 else = 1 */
if((n|(yisint-1))==0) s = -one;/* (-ve)**(odd int) */
This problem occurs too frequently, it would be nice to have some
recommendation(s) on how to do that properly.
Should we use nan(3)?
--
HE CE3OH...
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