[Bug c++/91415] Invalid warning for C++17 sequencing of shift operator E1<<E2.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91415

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Testcase also with PMF:
struct S { int a[10]; void bar (); void baz (); };

typedef void (S::*pmf) ();

void
foo (int i, int x[10][10], int y[10], struct S z[10], struct S *w[10], pmf
u[10])
{
  int b = x[i++][i++];
  int c = i++ << i++;
  int d = i++ >> i++;
  int e = i++ && i++;
  int f = i++ ? i++ : i++;
  int g = (i++, i++);
  int h = z[i++].a[i++];
  int j = w[i++]->a[i++];
  (z[i++].*u[i++]) ();
  (w[i++]->*u[i++]) ();
  y[i++] = y[i++];
}