gcc/testsuite/gfortran.dg/matmul_bounds_9.f90

   1 ! { dg-do run }
   2 ! { dg-options "-fbounds-check -ffrontend-optimize" }
   3 ! { dg-shouldfail "Fortran runtime error: Incorrect extent in argument B in MATMUL intrnisic for dimension 2: is 1, should be 2" }
   4 module x
   5   implicit none
   6 contains
   7   subroutine mmul(c, a, b)
   8     real, dimension(:,:), intent(in) :: a,b
   9     real, dimension(:,:), intent(out) :: c
  10     c = matmul(a,transpose(b))
  11   end subroutine mmul
  12 end module x
  13
  14 program main
  15   use x
  16   integer, parameter :: n = 3, m=4, cnt=2
  17   real, dimension(n,cnt) :: a
  18   real, dimension(m,cnt-1) :: b
  19   real, dimension(n,m) :: c
  20   a = 1.0
  21   b = 2.3
  22   call mmul(c,a,b)
  23 end program main