gcc/testsuite/gfortran.dg/matmul_bounds_8.f90

   1 ! { dg-do run }
   2 ! { dg-options "-fno-backtrace -fbounds-check -fno-realloc-lhs" }
   3 ! { dg-shouldfail "Fortran runtime error: Incorrect extent in return array in MATMUL intrinsic for dimension 2: is 2, should be 3" }
   4 program main
   5   real, dimension(3,2) :: a
   6   real, dimension(3,2) :: b
   7   real, dimension(:,:), allocatable :: ret
   8   allocate (ret(3,3))
   9   a = 1.0
  10   b = 2.3
  11   ret = matmul(a,transpose(b))  ! This is OK
  12   deallocate(ret)
  13   allocate(ret(3,2))
  14   ret = matmul(a,transpose(b))  ! This should throw an error.
  15 end program main
  16 ! { dg-output "Fortran runtime error: Array bound mismatch for dimension 2 of array" }