Updated getResultExpr to getResultNode. Added strlcat. Added tests.

This commit is contained in:
Benjamin Rodes
2023-11-29 16:03:41 -05:00
parent 4919c4a424
commit 94a0420040
6 changed files with 815 additions and 9 deletions

View File

@@ -5,14 +5,16 @@
import cpp
import semmle.code.cpp.models.implementations.Strcat
import semmle.code.cpp.models.interfaces.FormattingFunction
import semmle.code.cpp.dataflow.new.DataFlow
class StringConcatenation extends Call {
StringConcatenation() {
// printf-like functions, i.e., concat through formating
// sprintf-like functions, i.e., concat through formating
exists(FormattingFunctionCall fc | this = fc)
or
// strcat variants
exists(StrcatFunction f | this.getTarget() = f)
this.getTarget() instanceof StrcatFunction
or
this.getTarget() instanceof StrlcatFunction
or
// operator+ concat
exists(Call call, Operator op |
@@ -35,7 +37,9 @@ class StringConcatenation extends Call {
Expr getAnOperand() {
// The result is an argument of 'this' (a call)
result = this.getAnArgument() and
not result instanceof Call and // addresses odd behavior with overloaded operators
// addresses odd behavior with overloaded operators
// i.e., "call to operator+" appearing as an operand
not result instanceof Call and
// Limit the result type to string
(
result.getUnderlyingType().stripType().getName() = "char"
@@ -69,11 +73,26 @@ class StringConcatenation extends Call {
}
/**
* Gets the expression representing the concatenation result.
* Gets the data flow node representing the concatenation result.
*/
Expr getResultExpr() {
if this instanceof FormattingFunctionCall
then result = this.(FormattingFunctionCall).getOutputArgument(_)
else result = this.(Call)
DataFlow::Node getResultNode() {
if this.getTarget() instanceof StrcatFunction
then
result.asDefiningArgument() =
this.getArgument(this.getTarget().(StrcatFunction).getParamDest())
or
// Hardcoding it is also the return
[result.asExpr(), result.asIndirectExpr()] = this.(Call)
else
if this.getTarget() instanceof StrlcatFunction
then (
[result.asExpr(), result.asIndirectExpr()] =
this.getArgument(this.getTarget().(StrlcatFunction).getParamDest())
) else
if this instanceof FormattingFunctionCall
then
[result.asExpr(), result.asIndirectExpr()] =
this.(FormattingFunctionCall).getOutputArgument(_)
else [result.asExpr(), result.asIndirectExpr()] = this.(Call)
}
}

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@@ -0,0 +1,62 @@
// #include <iostream>
// #include <string>
// #include <stdio.h>
// #include <string.h>
// #include <sstream>
#include "stl.h"
int sprintf(char *s, const char *format, ...);
char *strcat(char * s1, const char * s2);
using namespace std;
void test1(){
string str1 = "Hello";
string str2 = "World";
string str3 = "!";
string str4 = "Concatenation";
string str5 = "is";
string str6 = "fun";
// Using the + operator
string result1 = str1 + " " + str2 + str3;
// Using the append() function
//----TODO: currently not modeled----
// string result2 = str4.append(" ") + str5.append(" ") + str6;
// Using the insert() function
//----TODO: currently not modeled----
// string result3 = str1.insert(5, " ") + str2.insert(5, "! ");
// Using the replace() function
//----TODO: currently not modeled----
// string result4 = str1.replace(0, 5, "Hi") + str2.replace(0, 5, "There");
// Using the push_back() function
//----TODO: currently not modeled----
// string result5;
// for (char c : str1) {
// result5.push_back(c);
// }
// Using the stream operator
string result6;
std::stringstream ss;
ss << str1 << " " << str2 << str3;
}
void test2(char* ucstr) {
char str1[20] = "Hello";
char str2[20] = "World";
char result[40];
char *result2;
// Using sprintf
sprintf(result, "%s %s %s", str1, str2, ucstr);
// Using strcat
strcat(str1, ucstr);
}

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@@ -0,0 +1,644 @@
typedef unsigned long size_t;
#include "type_traits.h"
namespace std
{
template<class T> constexpr T&& forward(remove_reference_t<T>& t) noexcept;
template<class T> constexpr T&& forward(remove_reference_t<T>&& t) noexcept;
}
// --- iterator ---
namespace std {
struct ptrdiff_t;
template<class I> struct iterator_traits;
template <class Category,
class value_type,
class difference_type = ptrdiff_t,
class pointer_type = value_type*,
class reference_type = value_type&>
struct iterator {
typedef Category iterator_category;
iterator();
iterator(iterator<Category, remove_const_t<value_type> > const &other); // non-const -> const conversion constructor
iterator &operator++();
iterator operator++(int);
iterator &operator--();
iterator operator--(int);
bool operator==(iterator other) const;
bool operator!=(iterator other) const;
reference_type operator*() const;
pointer_type operator->() const;
iterator operator+(int);
iterator operator-(int);
iterator &operator+=(int);
iterator &operator-=(int);
int operator-(iterator);
reference_type operator[](int);
};
struct input_iterator_tag {};
struct forward_iterator_tag : public input_iterator_tag {};
struct bidirectional_iterator_tag : public forward_iterator_tag {};
struct random_access_iterator_tag : public bidirectional_iterator_tag {};
struct output_iterator_tag {};
template<class Container>
class back_insert_iterator {
protected:
Container* container = nullptr;
public:
using iterator_category = output_iterator_tag;
using value_type = void;
using difference_type = ptrdiff_t;
using pointer = void;
using reference = void;
using container_type = Container;
constexpr back_insert_iterator() noexcept = default;
constexpr explicit back_insert_iterator(Container& x);
back_insert_iterator& operator=(const typename Container::value_type& value);
back_insert_iterator& operator=(typename Container::value_type&& value);
back_insert_iterator& operator*();
back_insert_iterator& operator++();
back_insert_iterator operator++(int);
};
template<class Container>
constexpr back_insert_iterator<Container> back_inserter(Container& x) {
return back_insert_iterator<Container>(x);
}
template<class Container>
class front_insert_iterator {
protected:
Container* container = nullptr;
public:
using iterator_category = output_iterator_tag;
using value_type = void;
using difference_type = ptrdiff_t;
using pointer = void;
using reference = void;
using container_type = Container;
constexpr front_insert_iterator() noexcept = default;
constexpr explicit front_insert_iterator(Container& x);
constexpr front_insert_iterator& operator=(const typename Container::value_type& value);
constexpr front_insert_iterator& operator=(typename Container::value_type&& value);
constexpr front_insert_iterator& operator*();
constexpr front_insert_iterator& operator++();
constexpr front_insert_iterator operator++(int);
};
template<class Container>
constexpr front_insert_iterator<Container> front_inserter(Container& x) {
return front_insert_iterator<Container>(x);
}
}
// --- string ---
namespace std
{
template<class charT> struct char_traits;
typedef size_t streamsize;
template <class T> class allocator {
public:
allocator() throw();
typedef size_t size_type;
};
template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
class basic_string {
public:
using value_type = charT;
using reference = value_type&;
using const_reference = const value_type&;
typedef typename Allocator::size_type size_type;
static const size_type npos = -1;
explicit basic_string(const Allocator& a = Allocator());
basic_string(const charT* s, const Allocator& a = Allocator());
template<class InputIterator> basic_string(InputIterator begin, InputIterator end, const Allocator& a = Allocator());
const charT* c_str() const;
charT* data() noexcept;
size_t length() const;
typedef std::iterator<random_access_iterator_tag, charT> iterator;
typedef std::iterator<random_access_iterator_tag, const charT> const_iterator;
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
const_iterator cbegin() const;
const_iterator cend() const;
void push_back(charT c);
const charT& front() const;
charT& front();
const charT& back() const;
charT& back();
const_reference operator[](size_type pos) const;
reference operator[](size_type pos);
const_reference at(size_type n) const;
reference at(size_type n);
template<class T> basic_string& operator+=(const T& t);
basic_string& operator+=(const charT* s);
basic_string& append(const basic_string& str);
basic_string& append(const charT* s);
basic_string& append(size_type n, charT c);
template<class InputIterator> basic_string& append(InputIterator first, InputIterator last);
basic_string& assign(const basic_string& str);
basic_string& assign(size_type n, charT c);
template<class InputIterator> basic_string& assign(InputIterator first, InputIterator last);
basic_string& insert(size_type pos, const basic_string& str);
basic_string& insert(size_type pos, size_type n, charT c);
basic_string& insert(size_type pos, const charT* s);
iterator insert(const_iterator p, size_type n, charT c);
template<class InputIterator> iterator insert(const_iterator p, InputIterator first, InputIterator last);
basic_string& replace(size_type pos1, size_type n1, const basic_string& str);
basic_string& replace(size_type pos1, size_type n1, size_type n2, charT c);
size_type copy(charT* s, size_type n, size_type pos = 0) const;
void clear() noexcept;
basic_string substr(size_type pos = 0, size_type n = npos) const;
void swap(basic_string& s) noexcept/*(allocator_traits<Allocator>::propagate_on_container_swap::value || allocator_traits<Allocator>::is_always_equal::value)*/;
};
template<class charT, class traits, class Allocator> basic_string<charT, traits, Allocator> operator+(const basic_string<charT, traits, Allocator>& lhs, const basic_string<charT, traits, Allocator>& rhs);
template<class charT, class traits, class Allocator> basic_string<charT, traits, Allocator> operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs);
typedef basic_string<char> string;
}
// --- istring / ostream / stringstream ---
namespace std
{
template <class charT, class traits = char_traits<charT> >
class basic_istream /*: virtual public basic_ios<charT,traits> - not needed for this test */ {
public:
using char_type = charT;
using int_type = int; //typename traits::int_type;
basic_istream<charT, traits>& operator>>(int& n);
int_type get();
basic_istream<charT, traits>& get(char_type& c);
basic_istream<charT, traits>& get(char_type* s, streamsize n);
int_type peek();
basic_istream<charT, traits>& read (char_type* s, streamsize n);
streamsize readsome(char_type* s, streamsize n);
basic_istream<charT, traits>& putback(char_type c);
basic_istream<charT,traits>& unget();
basic_istream<charT,traits>& getline(char_type* s, streamsize n);
basic_istream<charT,traits>& getline(char_type* s, streamsize n, char_type delim);
};
template<class charT, class traits> basic_istream<charT, traits>& operator>>(basic_istream<charT, traits>&, charT*);
template<class charT, class traits, class Allocator> basic_istream<charT, traits>& operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
template<class charT, class traits, class Allocator> basic_istream<charT,traits>& getline(basic_istream<charT,traits>& is, basic_string<charT,traits,Allocator>& str, charT delim);
template<class charT, class traits, class Allocator> basic_istream<charT,traits>& getline(basic_istream<charT,traits>& is, basic_string<charT,traits,Allocator>& str);
template <class charT, class traits = char_traits<charT> >
class basic_ostream /*: virtual public basic_ios<charT,traits> - not needed for this test */ {
public:
typedef charT char_type;
basic_ostream<charT, traits>& operator<<(int n);
basic_ostream<charT, traits>& put(char_type c);
basic_ostream<charT, traits>& write(const char_type* s, streamsize n);
basic_ostream<charT,traits>& flush();
};
template<class charT, class traits> basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>&, const charT*);
template<class charT, class traits, class Allocator> basic_ostream<charT, traits>& operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str);
template<class charT, class traits = char_traits<charT>>
class basic_iostream : public basic_istream<charT, traits>, public basic_ostream<charT, traits> {
public:
};
template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>>
class basic_stringstream : public basic_iostream<charT, traits> {
public:
explicit basic_stringstream(/*ios_base::openmode which = ios_base::out|ios_base::in - not needed for this test*/);
explicit basic_stringstream( const basic_string<charT, traits, Allocator>& str/*, ios_base::openmode which = ios_base::out | ios_base::in*/);
basic_stringstream(const basic_stringstream& rhs) = delete;
basic_stringstream(basic_stringstream&& rhs);
basic_stringstream& operator=(const basic_stringstream& rhs) = delete;
basic_stringstream& operator=(basic_stringstream&& rhs);
void swap(basic_stringstream& rhs);
basic_string<charT, traits, Allocator> str() const;
void str(const basic_string<charT, traits, Allocator>& str);
};
typedef basic_istream<char> istream;
typedef basic_ostream<char> ostream;
extern istream cin;
extern ostream cout;
using stringstream = basic_stringstream<char>;
}
// --- vector ---
namespace std {
template<class T, class Allocator = allocator<T>>
class vector {
public:
using value_type = T;
using reference = value_type&;
using const_reference = const value_type&;
using size_type = unsigned int;
using iterator = std::iterator<random_access_iterator_tag, T>;
using const_iterator = std::iterator<random_access_iterator_tag, const T>;
vector() noexcept(noexcept(Allocator())) : vector(Allocator()) { }
explicit vector(const Allocator&) noexcept;
explicit vector(size_type n, const Allocator& = Allocator());
vector(size_type n, const T& value, const Allocator& = Allocator());
template<class InputIterator, class IteratorCategory = typename InputIterator::iterator_category> vector(InputIterator first, InputIterator last, const Allocator& = Allocator());
// use of `iterator_category` makes sure InputIterator is (probably) an iterator, and not an `int` or
// similar that should match a different overload (SFINAE).
~vector();
vector& operator=(const vector& x);
vector& operator=(vector&& x) noexcept/*(allocator_traits<Allocator>::propagate_on_container_move_assignment::value || allocator_traits<Allocator>::is_always_equal::value)*/;
template<class InputIterator, class IteratorCategory = typename InputIterator::iterator_category> void assign(InputIterator first, InputIterator last);
// use of `iterator_category` makes sure InputIterator is (probably) an iterator, and not an `int` or
// similar that should match a different overload (SFINAE).
void assign(size_type n, const T& u);
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
size_type size() const noexcept;
reference operator[](size_type n);
const_reference operator[](size_type n) const;
const_reference at(size_type n) const;
reference at(size_type n);
reference front();
const_reference front() const;
reference back();
const_reference back() const;
T* data() noexcept;
const T* data() const noexcept;
void push_back(const T& x);
void push_back(T&& x);
iterator insert(const_iterator position, const T& x);
iterator insert(const_iterator position, T&& x);
iterator insert(const_iterator position, size_type n, const T& x);
template<class InputIterator> iterator insert(const_iterator position, InputIterator first, InputIterator last);
template <class... Args> iterator emplace (const_iterator position, Args&&... args);
template <class... Args> void emplace_back (Args&&... args);
void swap(vector&) noexcept/*(allocator_traits<Allocator>::propagate_on_container_swap::value || allocator_traits<Allocator>::is_always_equal::value)*/;
void clear() noexcept;
};
}
// --- make_shared / make_unique ---
namespace std {
template<typename T>
class shared_ptr {
public:
shared_ptr() noexcept;
explicit shared_ptr(T*);
shared_ptr(const shared_ptr&) noexcept;
template<class U> shared_ptr(const shared_ptr<U>&) noexcept;
template<class U> shared_ptr(shared_ptr<U>&&) noexcept;
shared_ptr<T>& operator=(const shared_ptr<T>&) noexcept;
shared_ptr<T>& operator=(shared_ptr<T>&&) noexcept;
T& operator*() const noexcept;
T* operator->() const noexcept;
T* get() const noexcept;
};
template<typename T>
class unique_ptr {
public:
constexpr unique_ptr() noexcept;
explicit unique_ptr(T*) noexcept;
unique_ptr(unique_ptr<T>&&) noexcept;
unique_ptr<T>& operator=(unique_ptr<T>&&) noexcept;
T& operator*() const;
T* operator->() const noexcept;
T* get() const noexcept;
};
template<typename T, class... Args> unique_ptr<T> make_unique(Args&&...);
template<typename T, class... Args> shared_ptr<T> make_shared(Args&&...);
}
// --- pair ---
namespace std {
template <class T1, class T2>
struct pair {
typedef T1 first_type;
typedef T2 second_type;
T1 first;
T2 second;
pair();
pair(const T1& x, const T2& y) : first(x), second(y) {};
template<class U, class V> pair(const pair<U, V> &p);
void swap(pair& p) /*noexcept(...)*/;
};
template<class T1, class T2> constexpr pair<decay_t<T1>, decay_t<T2>> make_pair(T1&& x, T2&& y) {
return pair<decay_t<T1>, decay_t<T2>>(std::forward<T1>(x), std::forward<T2>(y));
}
}
// --- map ---
namespace std {
template<class T = void> struct less;
template<class Key, class T, class Compare = less<Key>, class Allocator = allocator<pair<const Key, T>>>
class map {
public:
using key_type = Key;
using mapped_type = T;
using value_type = pair<const Key, T>;
using iterator = std::iterator<random_access_iterator_tag, value_type >;
using const_iterator = std::iterator<random_access_iterator_tag, const value_type >;
map() /*: map(Compare()) { }*/;
map(const map& x);
map(map&& x);
~map();
map& operator=(const map& x);
map& operator=(map&& x) /*noexcept(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_move_assignable_v<Compare>)*/;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
T& operator[](const key_type& x);
T& operator[](key_type&& x);
T& at(const key_type& x);
const T& at(const key_type& x) const;
template<class... Args> pair<iterator, bool> emplace(Args&&... args);
template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator, bool> insert(const value_type& x);
pair<iterator, bool> insert(value_type&& x);
iterator insert(const_iterator position, const value_type& x);
iterator insert(const_iterator position, value_type&& x);
template<class... Args> pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);
template<class... Args> pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);
template<class... Args> iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args);
template<class... Args> iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);
template<class M> pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);
template<class M> pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);
template<class M> iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);
template<class M> iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);
iterator erase(iterator position);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void swap(map&) /*noexcept(/*==allocator_traits<Allocator>::is_always_equal::value && is_nothrow_swappable_v<Compare>)*/;
void clear() noexcept;
template<class C2> void merge(map<Key, T, C2, Allocator>& source);
template<class C2> void merge(map<Key, T, C2, Allocator>&& source);
iterator find(const key_type& x);
const_iterator find(const key_type& x) const;
iterator lower_bound(const key_type& x);
const_iterator lower_bound(const key_type& x) const;
iterator upper_bound(const key_type& x);
const_iterator upper_bound(const key_type& x) const;
pair<iterator, iterator> equal_range(const key_type& x);
pair<const_iterator, const_iterator> equal_range(const key_type& x) const;
};
template<class T> struct hash;
template<class T = void> struct equal_to;
template<class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
class unordered_map {
public:
using key_type = Key;
using mapped_type = T;
using value_type = pair<const Key, T>;
using iterator = std::iterator<random_access_iterator_tag, value_type >;
using const_iterator = std::iterator<random_access_iterator_tag, const value_type >;
unordered_map();
unordered_map(const unordered_map&);
unordered_map(unordered_map&&);
~unordered_map();
unordered_map& operator=(const unordered_map&);
unordered_map& operator=(unordered_map&&) /*noexcept(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_move_assignable_v<Hash> && is_nothrow_move_assignable_v<Pred>)*/;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
mapped_type& operator[](const key_type& k);
mapped_type& operator[](key_type&& k);
mapped_type& at(const key_type& k);
const mapped_type& at(const key_type& k) const;
template<class... Args> pair<iterator, bool> emplace(Args&&... args);
template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator, bool> insert(const value_type& obj);
pair<iterator, bool> insert(value_type&& obj);
iterator insert(const_iterator hint, const value_type& obj);
iterator insert(const_iterator hint, value_type&& obj);
template<class... Args> pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);
template<class... Args> pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);
template<class... Args> iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args);
template<class... Args> iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);
template<class M> pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);
template<class M> pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);
template<class M> iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);
template<class M> iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);
iterator erase(iterator position);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void swap(unordered_map&) /*noexcept(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_swappable_v<Hash> && is_nothrow_swappable_v<Pred>)*/;
void clear() noexcept;
template<class H2, class P2> void merge(unordered_map<Key, T, H2, P2, Allocator>& source);
template<class H2, class P2> void merge(unordered_map<Key, T, H2, P2, Allocator>&& source);
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
};
};
// --- set ---
namespace std {
template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
class set {
public:
using key_type = Key;
using value_type = Key;
using size_type = size_t;
using allocator_type = Allocator;
using iterator = std::iterator<random_access_iterator_tag, value_type >;
using const_iterator = std::iterator<random_access_iterator_tag, const value_type >;
set() /*: set(Compare())*/ { }
set(const set& x);
set(set&& x);
template<class InputIterator> set(InputIterator first, InputIterator last/*, const Compare& comp = Compare(), const Allocator& = Allocator()*/);
~set();
set& operator=(const set& x);
set& operator=(set&& x) noexcept/*(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_move_assignable_v<Compare>)*/;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
template<class... Args> pair<iterator, bool> emplace(Args&&... args);
template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator,bool> insert(const value_type& x);
pair<iterator,bool> insert(value_type&& x);
iterator insert(const_iterator position, const value_type& x);
iterator insert(const_iterator position, value_type&& x);
template<class InputIterator> void insert(InputIterator first, InputIterator last);
iterator erase(iterator position);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void swap(set&) noexcept/*(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_swappable_v<Compare>)*/;
void clear() noexcept;
template<class C2> void merge(set<Key, C2, Allocator>& source);
template<class C2> void merge(set<Key, C2, Allocator>&& source);
iterator find(const key_type& x);
const_iterator find(const key_type& x) const;
iterator lower_bound(const key_type& x);
const_iterator lower_bound(const key_type& x) const;
iterator upper_bound(const key_type& x);
const_iterator upper_bound(const key_type& x) const;
pair<iterator, iterator> equal_range(const key_type& x);
pair<const_iterator, const_iterator> equal_range(const key_type& x) const;
};
template<class Key, class Hash = hash<Key>, class Pred = equal_to<Key>, class Allocator = allocator<Key>>
class unordered_set {
public:
using key_type = Key;
using value_type = Key;
using hasher = Hash;
using key_equal = Pred;
using allocator_type = Allocator;
using size_type = size_t;
using iterator = std::iterator<random_access_iterator_tag, value_type >;
using const_iterator = std::iterator<random_access_iterator_tag, const value_type >;
unordered_set();
unordered_set(const unordered_set&);
unordered_set(unordered_set&&);
template<class InputIterator> unordered_set(InputIterator f, InputIterator l, size_type n = 0/*, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()*/);
~unordered_set();
unordered_set& operator=(const unordered_set&);
unordered_set& operator=(unordered_set&&) noexcept/*(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_move_assignable_v<Hash> && is_nothrow_move_assignable_v<Pred>)*/;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
template<class... Args> pair<iterator, bool> emplace(Args&&... args);
template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator, bool> insert(const value_type& obj);
pair<iterator, bool> insert(value_type&& obj);
iterator insert(const_iterator hint, const value_type& obj);
iterator insert(const_iterator hint, value_type&& obj);
template<class InputIterator> void insert(InputIterator first, InputIterator last);
iterator erase(iterator position);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void swap(unordered_set&) noexcept/*(allocator_traits<Allocator>::is_always_equal::value && is_nothrow_swappable_v<Hash> && is_nothrow_swappable_v<Pred>)*/;
void clear() noexcept;
template<class H2, class P2> void merge(unordered_set<Key, H2, P2, Allocator>& source);
template<class H2, class P2> void merge(unordered_set<Key, H2, P2, Allocator>&& source);
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
};
}

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@@ -0,0 +1,38 @@
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:22:23:25 | str1 | concat.cpp:23:22:23:31 | call to operator+ |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:22:23:25 | str1 | concat.cpp:23:22:23:31 | call to operator+ |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:22:23:25 | str1 | concat.cpp:23:22:23:31 | call to operator+ indirection |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:22:23:25 | str1 | concat.cpp:23:22:23:31 | call to operator+ indirection |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:22:23:25 | str1 | concat.cpp:23:27:23:27 | call to operator+ |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:29:23:31 | | concat.cpp:23:22:23:31 | call to operator+ |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:29:23:31 | | concat.cpp:23:22:23:31 | call to operator+ |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:29:23:31 | | concat.cpp:23:22:23:31 | call to operator+ indirection |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:29:23:31 | | concat.cpp:23:22:23:31 | call to operator+ indirection |
| concat.cpp:23:27:23:27 | call to operator+ | concat.cpp:23:29:23:31 | | concat.cpp:23:27:23:27 | call to operator+ |
| concat.cpp:23:33:23:33 | call to operator+ | concat.cpp:23:35:23:38 | str2 | concat.cpp:23:22:23:38 | call to operator+ |
| concat.cpp:23:33:23:33 | call to operator+ | concat.cpp:23:35:23:38 | str2 | concat.cpp:23:22:23:38 | call to operator+ |
| concat.cpp:23:33:23:33 | call to operator+ | concat.cpp:23:35:23:38 | str2 | concat.cpp:23:22:23:38 | call to operator+ indirection |
| concat.cpp:23:33:23:33 | call to operator+ | concat.cpp:23:35:23:38 | str2 | concat.cpp:23:22:23:38 | call to operator+ indirection |
| concat.cpp:23:33:23:33 | call to operator+ | concat.cpp:23:35:23:38 | str2 | concat.cpp:23:33:23:33 | call to operator+ |
| concat.cpp:23:40:23:40 | call to operator+ | concat.cpp:23:42:23:45 | str3 | concat.cpp:23:40:23:40 | call to operator+ |
| concat.cpp:47:8:47:8 | call to operator<< | concat.cpp:47:11:47:14 | str1 | concat.cpp:47:8:47:17 | call to operator<< |
| concat.cpp:47:8:47:8 | call to operator<< | concat.cpp:47:11:47:14 | str1 | concat.cpp:47:8:47:17 | call to operator<< indirection |
| concat.cpp:47:16:47:16 | call to operator<< | concat.cpp:47:19:47:21 | | concat.cpp:47:16:47:24 | call to operator<< |
| concat.cpp:47:16:47:16 | call to operator<< | concat.cpp:47:19:47:21 | | concat.cpp:47:16:47:24 | call to operator<< indirection |
| concat.cpp:47:23:47:23 | call to operator<< | concat.cpp:47:26:47:29 | str2 | concat.cpp:47:23:47:32 | call to operator<< |
| concat.cpp:47:23:47:23 | call to operator<< | concat.cpp:47:26:47:29 | str2 | concat.cpp:47:23:47:32 | call to operator<< indirection |
| concat.cpp:47:31:47:31 | call to operator<< | concat.cpp:47:34:47:37 | str3 | concat.cpp:47:31:47:38 | call to operator<< |
| concat.cpp:47:31:47:31 | call to operator<< | concat.cpp:47:34:47:37 | str3 | concat.cpp:47:31:47:38 | call to operator<< indirection |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:21:58:30 | %s %s %s | concat.cpp:58:13:58:18 | result |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:21:58:30 | %s %s %s | concat.cpp:58:13:58:18 | result indirection |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:33:58:36 | str1 | concat.cpp:58:13:58:18 | result |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:33:58:36 | str1 | concat.cpp:58:13:58:18 | result indirection |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:39:58:42 | str2 | concat.cpp:58:13:58:18 | result |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:39:58:42 | str2 | concat.cpp:58:13:58:18 | result indirection |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:45:58:49 | ucstr | concat.cpp:58:13:58:18 | result |
| concat.cpp:58:5:58:11 | call to sprintf | concat.cpp:58:45:58:49 | ucstr | concat.cpp:58:13:58:18 | result indirection |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:12:61:15 | str1 | concat.cpp:61:5:61:10 | call to strcat |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:12:61:15 | str1 | concat.cpp:61:5:61:10 | call to strcat indirection |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:12:61:15 | str1 | concat.cpp:61:12:61:15 | strcat output argument |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:18:61:22 | ucstr | concat.cpp:61:5:61:10 | call to strcat |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:18:61:22 | ucstr | concat.cpp:61:5:61:10 | call to strcat indirection |
| concat.cpp:61:5:61:10 | call to strcat | concat.cpp:61:18:61:22 | ucstr | concat.cpp:61:12:61:15 | strcat output argument |

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@@ -0,0 +1,8 @@
import cpp
import semmle.code.cpp.commons.StringConcatenation
from StringConcatenation s, Expr op, DataFlow::Node res
where s.getLocation().getFile().getBaseName() = "concat.cpp"
and op = s.getAnOperand()
and res = s.getResultNode()
select s, op, res

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@@ -0,0 +1,35 @@
template<class T>
struct remove_const { typedef T type; };
template<class T>
struct remove_const<const T> { typedef T type; };
// `remove_const_t<T>` removes any `const` specifier from `T`
template<class T>
using remove_const_t = typename remove_const<T>::type;
template<class T>
struct remove_reference { typedef T type; };
template<class T>
struct remove_reference<T &> { typedef T type; };
template<class T>
struct remove_reference<T &&> { typedef T type; };
// `remove_reference_t<T>` removes any `&` from `T`
template<class T>
using remove_reference_t = typename remove_reference<T>::type;
template<class T>
struct decay_impl {
typedef T type;
};
template<class T, size_t t_size>
struct decay_impl<T[t_size]> {
typedef T* type;
};
template<class T>
using decay_t = typename decay_impl<remove_reference_t<T>>::type;