struct S { float f; };

void not_a_field()    { S s; s.missing = 123; }
void not_a_function() { S s; s.f(); }
void not_a_bvec()     { S s; s.f = bool3(true); }
void not_a_struct()   { S s; s.f.missing; }
void not_an_array()   { S s; s.f[0]; }

/*%%*
type 'S' does not have a field named 'missing'
not a function
type mismatch: '=' cannot operate on 'float', 'bool3'
invalid swizzle component 'm'
expected array, but found 'float'
*%%*/