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