1! { dg-do run } 2! { dg-options "-fdump-tree-original" } 3! Test that all string length calculations are 4! optimized away. 5program main 6 character (len=999) :: c 7 character (len=5) :: unit 8 unit = ' ' 9 read (unit=unit,fmt='(I5)') i ! Hide from optimizers 10 j = 7 11 c = '123456789' 12 if (len(c( 3 : 5 )) /= 3) call abort ! Case 1 13 if (len(c( i*(i+1) : (i+1)*i + 2 )) /= 3) call abort ! Case 2 14 if (len(c( i*(i+1) : 2 + (i+1)*i )) /= 3) call abort ! Case 3 15 if (len(c( i*(i+1) + 2 : (i+1)*i + 3 )) /= 2) call abort ! Case 4 16 if (len(c( 2 + i*(i+1) : (i+1)*i + 3 )) /= 2) call abort ! Case 5 17 if (len(c( i*(i+1) + 2 : 3 + (i+1)*i )) /= 2) call abort ! Case 6 18 if (len(c( 2 + i*(i+1) : 3 + (i+1)*i )) /= 2) call abort ! Case 7 19 if (len(c( i*(i+1) - 1 : (i+1)*i + 1 )) /= 3) call abort ! Case 8 20 if (len(c( i*(i+1) - 1 : 1 + (i+1)*i )) /= 3) call abort ! Case 9 21 if (len(c( i*(i+1) : (i+1)*i -(-1))) /= 2) call abort ! Case 10 22 if (len(c( i*(i+1) +(-2): (i+1)*i - 1 )) /= 2) call abort ! Case 11 23 if (len(c( i*(i+1) + 2 : (i+1)*i -(-4))) /= 3) call abort ! Case 12 24 if (len(c( i*(i+1) - 3 : (i+1)*i - 1 )) /= 3) call abort ! Case 13 25 if (len(c(13 - i*(i+1) :15 - (i+1)*i )) /= 3) call abort ! Case 14 26 if (len(c( i*(i+1) +(-1): (i+1)*i )) /= 2) call abort ! Case 15 27 if (len(c(-1 + i*(i+1) : (i+1)*i )) /= 2) call abort ! Case 16 28 if (len(c( i*(i+1) - 2 : (i+1)*i )) /= 3) call abort ! Case 17 29 if (len(c( (i-2)*(i-3) : (i-3)*(i-2) )) /= 1) call abort ! Case 18 30end program main 31! { dg-final { scan-tree-dump-times "_abort" 0 "original" } } 32! { dg-final { cleanup-tree-dump "original" } } 33