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! { dg-do compile }
!
! See PR fortran/31610
!
implicit none
character(len=2) :: a
character(len=3) :: b
print *, merge(a,a,.true.)
print *, merge(a,'aa',.true.)
print *, merge('aa',a,.true.)
print *, merge('aa','bb',.true.)
print *, merge(a, b, .true.) ! { dg-error "Unequal character lengths" }
print *, merge(a, 'bbb',.true.) ! { dg-error "Unequal character lengths" }
print *, merge('aa',b, .true.) ! { dg-error "Unequal character lengths" }
print *, merge('aa','bbb',.true.) ! { dg-error "Unequal character lengths" }
end
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