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Diffstat (limited to 'gcc/testsuite/gfortran.dg/aliasing_dummy_1.f90')
-rw-r--r-- | gcc/testsuite/gfortran.dg/aliasing_dummy_1.f90 | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/aliasing_dummy_1.f90 b/gcc/testsuite/gfortran.dg/aliasing_dummy_1.f90 new file mode 100644 index 000000000..686853a1c --- /dev/null +++ b/gcc/testsuite/gfortran.dg/aliasing_dummy_1.f90 @@ -0,0 +1,67 @@ +! { dg-do run } +! { dg-options "-std=legacy" } +! +! This tests the fix for PR24276, which originated from the Loren P. Meissner example, +! Array_List. The PR concerns dummy argument aliassing of components of arrays of derived +! types as arrays of the type of the component. gfortran would compile and run this +! example but the stride used did not match the actual argument. This test case exercises +! a procedure call (to foo2, below) that is identical to Array_List's. +! +! Contributed by Paul Thomas <pault@gcc.gnu.org> + +program test_lex + type :: dtype + integer :: n + character*5 :: word + end type dtype + + type :: list + type(dtype), dimension(4) :: list + integer :: l = 4 + end type list + + type(list) :: table + type(dtype) :: elist(2,2) + + table%list = (/dtype (1 , "one "), dtype (2 , "two "), dtype (3 , "three"), dtype (4 , "four ")/) + +! Test 1D with assumed shape (original bug) and assumed size. + call bar (table, 2, 4) + if (any (table%list%word.ne.(/"one ","i= 2","three","i= 4"/))) call abort () + + elist = reshape (table%list, (/2,2/)) + +! Check 2D is OK with assumed shape and assumed size. + call foo3 (elist%word, 1) + call foo1 (elist%word, 3) + if (any (elist%word.ne.reshape ((/"i= 1","i= 2","i= 3","i= 4"/), (/2,2/)))) call abort () + +contains + + subroutine bar (table, n, m) + type(list) :: table + integer n, m + call foo1 (table%list(:table%l)%word, n) + call foo2 (table%list(:table%l)%word, m) + end subroutine bar + + subroutine foo1 (slist, i) + character(*), dimension(*) :: slist + integer i + write (slist(i), '(2hi=,i3)') i + end subroutine foo1 + + subroutine foo2 (slist, i) + character(5), dimension(:) :: slist + integer i + write (slist(i), '(2hi=,i3)') i + end subroutine foo2 + + subroutine foo3 (slist, i) + character(5), dimension(:,:) :: slist + integer i + write (slist(1,1), '(2hi=,i3)') i + end subroutine foo3 + +end program test_lex + |