Red Hat Bugzilla – Bug 252
Run time error
Last modified: 2008-05-01 11:37:48 EDT
I use gcc and g++ to compile the following small code #include <math.h> main() { double a[2]; pow(2.0,3.0); } If I use -O2 option, and when I run the program I get "segmentation fault(core dumped)". If I do not use "-O2" option, I won't get any error. I also upgrade gcc-2.7.2.3 to gcc-2.8.1 and I still get same type error, but only when I change "double a[2]" into "int a[2]". Why does this happen? BTW, I upgraded the libc and glib package ftped from your web site.
I tested this in a Pc with redhat 5.0, and no error.
In /usr/include/__math.h:552, if I change this line into long long int __p = (long int) __y, then I won't get error. Is this the problem? The original line is long long int __p = (long long int) __y
Could not replicate this problem on a test machine. Used gcc-2.7.2.3-14 rpm.
Did you try to change "double a[2];" to "int a[2];"? Only one of them will generate error by using gcc-2.7.2.3 with "-O2" option. Thanks!