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Diffstat (limited to 'gcc/testsuite/gfortran.dg/trim_optimize_4.f90')
| -rw-r--r-- | gcc/testsuite/gfortran.dg/trim_optimize_4.f90 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/trim_optimize_4.f90 b/gcc/testsuite/gfortran.dg/trim_optimize_4.f90 new file mode 100644 index 000000000..41c65b10b --- /dev/null +++ b/gcc/testsuite/gfortran.dg/trim_optimize_4.f90 @@ -0,0 +1,25 @@ +! { dg-do run } +! PR 47065 - make sure that trim optimization does not lead to +! wrong-code with aliasing. +! Test case provided by Tobias Burnus. +program main + character(len=12) :: str + str = '1234567890' + call sub(trim(str), str) + ! Should print '12345 ' + if (str /= '12345 ') call abort + call two(trim(str)) + if (str /= '123 ') call abort +contains + subroutine sub(a,b) + character(len=*), intent(in) :: a + character(len=*), intent(out) :: b + b = '' + b = a(1:5) + end subroutine sub + subroutine two(a) + character(len=*), intent(in) :: a + str = '' + str(1:3) = a(1:3) + end subroutine two +end program main |