https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29887
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-02-24
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
When compiled with today's GCC 7 the test case prints the expected result. Is
there still a problem here or can the bug be resolved as fixed?
$ (set -x && cat t.c && for m in 32 64; do gcc -O2 -Wall
-funsafe-math-optimizations -m$m -lm t.c && ./a.out 5000; done)
+ cat t.c
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
double y = atof(argv[1]);
double x = exp (y);
printf("%.6e %.6e\n", y, x);
perror("errno");
return 0;
}
+ for m in 32 64
+ gcc -O2 -Wall -funsafe-math-optimizations -m32 -lm t.c
+ ./a.out 5000
5.000000e+03 inf
errno: Numerical result out of range
+ for m in 32 64
+ gcc -O2 -Wall -funsafe-math-optimizations -m64 -lm t.c
+ ./a.out 5000
5.000000e+03 inf
errno: Numerical result out of range
