1! { dg-do run } 2! { dg-skip-if "" { *-*-* } { "-O0" } { "" } } 3! { dg-additional-options "-ffrontend-optimize -floop-nest-optimize" } 4! PR 56872 - wrong front-end optimization with a single constructor. 5! Original bug report by Rich Townsend. 6 integer :: k 7 real :: s 8 integer :: m 9 s = 2.0 10 m = 4 11 res = SUM([(s**(REAL(k-1)/REAL(m-1)),k=1,m)]) 12 if (abs(res - 5.84732246) > 1e-6) STOP 1 13 end 14