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! Check to ensure only the first true clause in WHERE is ! executed. program where_17 integer :: a(3) a = (/1, 2, 3/) where (a .eq. 1) a = 2 elsewhere (a .le. 2) a = 3 elsewhere (a .le. 3) a = 4 endwhere if (any (a .ne. (/2, 3, 4/))) call abort end program