gcc/testsuite/gfortran.dg/warn_conversion_2.f90


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! { dg-do compile }
! { dg-options "-Wconversion-extra" }

  real(8) :: sqrt2
  real x

  x = 2.0
  sqrt2 = sqrt(x)      ! { dg-warning "Conversion" }

  sqrt2 = sqrt(2.0)    ! no warning; simplified to a constant and range checked
end