gcc/testsuite/gcc.dg/spellcheck-fields.c

/* { dg-do compile } */

struct foo
{
  int foo;
  int bar;
  int baz;
};

int test (struct foo *ptr)
{
  return ptr->m_bar; /* { dg-error "'struct foo' has no member named 'm_bar'; did you mean 'bar'?" } */
}

int test2 (void)
{
  struct foo instance = {0, 0, 0};
  return instance.m_bar; /* { dg-error "'struct foo' has no member named 'm_bar'; did you mean 'bar'?" } */
}

struct s {
    struct j { int aa; } kk;
    int ab;
};

void test3 (struct s x)
{
  x.ac;  /* { dg-error "'struct s' has no member named 'ac'; did you mean 'ab'?" } */
}

int test4 (struct foo *ptr)
{
  return sizeof (ptr->foa); /* { dg-error "'struct foo' has no member named 'foa'; did you mean 'foo'?" } */
}

/* Verify that we don't offer nonsensical suggestions.  */

int test5 (struct foo *ptr)
{
  return ptr->this_is_unlike_any_of_the_fields;   /* { dg-bogus "did you mean" } */
  /* { dg-error "has no member named" "" { target *-*-* } .-1 } */
}

union u
{
  int color;
  int shape;
};

int test6 (union u *ptr)
{
  return ptr->colour; /* { dg-error "'union u' has no member named 'colour'; did you mean 'color'?" } */
}

struct has_anon
{
  struct { int color; } s;
};

int test7 (struct has_anon *ptr)
{
  return ptr->s.colour; /* { dg-error "'struct <anonymous>' has no member named 'colour'; did you mean 'color'?" } */
}