arch/powerpc/boot/addnote.c:75:47: warning: right shift count >= width of type [-Wshift-count-overflow]

[Mathieu Malaterre]

Hi there,

For some reason I am seeing some new warning (W=0) on some old code.
Anyone else seeing them ?

  HOSTCC  arch/powerpc/boot/addnote
arch/powerpc/boot/addnote.c: In function ‘main’:
arch/powerpc/boot/addnote.c:75:47: warning: right shift count >= width
of type [-Wshift-count-overflow]
 #define PUT_64BE(off, v)((PUT_32BE((off), (v) >> 32L), \
                                               ^
arch/powerpc/boot/addnote.c:72:39: note: in definition of macro ‘PUT_16BE’
 #define PUT_16BE(off, v)(buf[off] = ((v) >> 8) & 0xff, \
                                       ^
arch/powerpc/boot/addnote.c:75:27: note: in expansion of macro ‘PUT_32BE’
 #define PUT_64BE(off, v)((PUT_32BE((off), (v) >> 32L), \
                           ^~~~~~~~
arch/powerpc/boot/addnote.c:94:50: note: in expansion of macro ‘PUT_64BE’
 #define PUT_64(off, v)  (e_data == ELFDATA2MSB ? PUT_64BE(off, v) : \
                                                  ^~~~~~~~
arch/powerpc/boot/addnote.c:183:3: note: in expansion of macro ‘PUT_64’
   PUT_64(ph + PH_OFFSET, ns);
   ^~~~~~
arch/powerpc/boot/addnote.c:75:47: warning: right shift count >= width
of type [-Wshift-count-overflow]
 #define PUT_64BE(off, v)((PUT_32BE((off), (v) >> 32L), \
                                               ^
arch/powerpc/boot/addnote.c:73:23: note: in definition of macro ‘PUT_16BE’
     buf[(off) + 1] = (v) & 0xff)