1 files changed, 83 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/argument_checking_13.f90 b/gcc/testsuite/gfortran.dg/argument_checking_13.f90
new file mode 100644
index 000000000..b94bbc7ec
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+++ b/gcc/testsuite/gfortran.dg/argument_checking_13.f90
@@ -0,0 +1,83 @@
+! { dg-do compile }
+!
+! PR fortran/34796
+!
+! Argument checks:
+! - elements of deferred-shape arrays (= non-dummies) are allowed
+!   as the memory is contiguous
+! - while assumed-shape arrays (= dummy arguments) and pointers are
+!   not (strides can make them non-contiguous)
+! and
+! - if the memory is non-contigous, character arguments have as
+!   storage size only the size of the element itself, check for
+!   too short actual arguments.
+!
+subroutine test1(assumed_sh_dummy, pointer_dummy)
+implicit none
+interface
+  subroutine rlv1(y)
+    real   :: y(3)
+  end subroutine rlv1
+end interface
+
+real          :: assumed_sh_dummy(:,:,:)
+real, pointer :: pointer_dummy(:,:,:)
+
+real, allocatable :: deferred(:,:,:)
+real, pointer     :: ptr(:,:,:)
+call rlv1(deferred(1,1,1))         ! valid since contiguous
+call rlv1(ptr(1,1,1))              ! { dg-error "Element of assumed-shaped or pointer array" }
+call rlv1(assumed_sh_dummy(1,1,1)) ! { dg-error "Element of assumed-shaped or pointer array" }
+call rlv1(pointer_dummy(1,1,1))    ! { dg-error "Element of assumed-shaped or pointer array" }
+end
+
+subroutine test2(assumed_sh_dummy, pointer_dummy)
+implicit none
+interface
+  subroutine rlv2(y)
+    character   :: y(3)
+  end subroutine rlv2
+end interface
+
+character(3)          :: assumed_sh_dummy(:,:,:)
+character(3), pointer :: pointer_dummy(:,:,:)
+
+character(3), allocatable :: deferred(:,:,:)
+character(3), pointer     :: ptr(:,:,:)
+call rlv2(deferred(1,1,1))         ! Valid since contiguous
+call rlv2(ptr(1,1,1))              ! Valid F2003
+call rlv2(assumed_sh_dummy(1,1,1)) ! Valid F2003
+call rlv2(pointer_dummy(1,1,1))    ! Valid F2003
+
+! The following is kind of ok: The memory access it valid
+! We warn nonetheless as the result is not what is intented
+! and also formally wrong.
+! Using (1:string_length) would be ok.
+call rlv2(ptr(1,1,1)(1:1))              ! { dg-warning "contains too few elements" }
+call rlv2(assumed_sh_dummy(1,1,1)(1:2)) ! { dg-warning "contains too few elements" }
+call rlv2(pointer_dummy(1,1,1)(1:3))    ! Valid F2003
+end
+
+subroutine test3(assumed_sh_dummy, pointer_dummy)
+implicit none
+interface
+  subroutine rlv3(y)
+    character   :: y(3)
+  end subroutine rlv3
+end interface
+
+character(2)          :: assumed_sh_dummy(:,:,:)
+character(2), pointer :: pointer_dummy(:,:,:)
+
+character(2), allocatable :: deferred(:,:,:)
+character(2), pointer     :: ptr(:,:,:)
+call rlv3(deferred(1,1,1))         ! Valid since contiguous
+call rlv3(ptr(1,1,1))              ! { dg-warning "contains too few elements" }
+call rlv3(assumed_sh_dummy(1,1,1)) ! { dg-warning "contains too few elements" }
+call rlv3(pointer_dummy(1,1,1))    ! { dg-warning "contains too few elements" }
+
+call rlv3(deferred(1,1,1)(1:2))         ! Valid since contiguous
+call rlv3(ptr(1,1,1)(1:2))              ! { dg-warning "contains too few elements" }
+call rlv3(assumed_sh_dummy(1,1,1)(1:2)) ! { dg-warning "contains too few elements" }
+call rlv3(pointer_dummy(1,1,1)(1:2))    ! { dg-warning "contains too few elements" }
+end