$ lpython integration_tests/modules_02.py 
warning: The symbol 'f' imported from modules_02b will shadow the existing symbol 'f'
 --> integration_tests/modules_02.py:1:25
  |
1 | from modules_02b import f, f
  |                         ^ old symbol
  |
1 | from modules_02b import f, f
  |                            ^ new symbol

$ lpython --show-c mat_vec_device.py -I../.. -I. -Iemulation > x
warning: The symbol 'SM_REG3' imported from gchl_defs will shadow the existing symbol 'SM_REG3'
  --> mat_vec_device.py:25:25
   |
25 |                         SM_REG3, VR16_G0, VR16_G1, VR16_G2, VR16_G3, VR16_G4, VR16_G5, VR16_G6, VR16_G7,
   |                         ^^^^^^^ old symbol
   |
29 |                         SM_REG0, SM_REG1, SM_REG2, SM_REG3, SM_0XFFFF, SM_0X0001, SM_0X1111, SM_0X0101,
   |                                                    ^^^^^^^ new symbol