========================================
Primitive types
========================================

int a;
uint8_t a;
uint16_t a;
uint32_t a;
uint64_t a;
uintptr_t a;

int8_t a;
int16_t a;
int32_t a;
int64_t a;
intptr_t a;

char16_t a;
char32_t a;

size_t a;
ssize_t a;

---

(translation_unit
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier))
  (declaration (primitive_type) (identifier)))

========================================
Type modifiers
========================================

void f(unsigned);
void f(unsigned int);
void f(signed long int);
void f(unsigned v1);
void f(unsigned long v2);

---

(translation_unit
  (declaration
    (primitive_type)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (sized_type_specifier)))))
  (declaration
    (primitive_type)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (sized_type_specifier (primitive_type))))))
  (declaration
    (primitive_type)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (sized_type_specifier (primitive_type))))))
  (declaration
    (primitive_type)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (sized_type_specifier) (identifier)))))
  (declaration
    (primitive_type)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (sized_type_specifier) (identifier))))))