! { dg-do run } ! { dg-options "-fbounds-check -fno-realloc-lhs" } ! { dg-shouldfail "Fortran runtime error: Incorrect extent in return array in MATMUL intrinsic: is 3, should be 2" } program main real, dimension(2,3) :: a real, dimension(3) :: b real, dimension(:), allocatable :: ret allocate (ret(2)) a = 1.0 b = 2.3 ret = matmul(a,b) ! This is OK deallocate(ret) allocate(ret(3)) ret = matmul(a,b) ! This should throw an error. end program main ! { dg-output "Fortran runtime error: Incorrect extent in return array in MATMUL intrinsic: is 3, should be 2" }