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RedBear-OS/local/recipes/dev/libclc/source/clang/test/Analysis/inner-pointer.cpp
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class) 
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

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// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=cplusplus.InnerPointer \
// RUN: -Wno-dangling -Wno-dangling-field -Wno-return-stack-address \
// RUN: %s -analyzer-output=text -verify
#include "Inputs/system-header-simulator-cxx.h"
namespace std {
template <typename T>
void func_ref(T &a);
template <typename T>
void func_const_ref(const T &a);
template <typename T>
void func_value(T a);
string my_string = "default";
void default_arg(int a = 42, string &b = my_string);
template <class T>
T *addressof(T &arg);
template <class T>
T *__addressof(T &arg);
char *data(std::string &c);
} // end namespace std
void consume(const char *) {}
void consume(const wchar_t *) {}
void consume(const char16_t *) {}
void consume(const char32_t *) {}
//=--------------------------------------=//
// `std::string` member functions //
//=--------------------------------------=//
void deref_after_scope_char(bool cond) {
const char *c, *d;
{
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
d = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
} // expected-note {{Inner buffer of 'std::string' deallocated by call to destructor}}
// expected-note@-1 {{Inner buffer of 'std::string' deallocated by call to destructor}}
std::string s;
const char *c2 = s.c_str();
if (cond) {
// expected-note@-1 {{Assuming 'cond' is true}}
// expected-note@-2 {{Taking true branch}}
// expected-note@-3 {{Assuming 'cond' is false}}
// expected-note@-4 {{Taking false branch}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
} else {
consume(d); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
}
void deref_after_scope_char_data_non_const() {
char *c;
{
std::string s;
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
} // expected-note {{Inner buffer of 'std::string' deallocated by call to destructor}}
std::string s;
char *c2 = s.data();
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_scope_wchar_t(bool cond) {
const wchar_t *c, *d;
{
std::wstring s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::wstring' obtained here}}
d = s.data(); // expected-note {{Pointer to inner buffer of 'std::wstring' obtained here}}
} // expected-note {{Inner buffer of 'std::wstring' deallocated by call to destructor}}
// expected-note@-1 {{Inner buffer of 'std::wstring' deallocated by call to destructor}}
std::wstring s;
const wchar_t *c2 = s.c_str();
if (cond) {
// expected-note@-1 {{Assuming 'cond' is true}}
// expected-note@-2 {{Taking true branch}}
// expected-note@-3 {{Assuming 'cond' is false}}
// expected-note@-4 {{Taking false branch}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
} else {
consume(d); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
}
void deref_after_scope_char16_t_cstr() {
const char16_t *c16;
{
std::u16string s16;
c16 = s16.c_str(); // expected-note {{Pointer to inner buffer of 'std::u16string' obtained here}}
} // expected-note {{Inner buffer of 'std::u16string' deallocated by call to destructor}}
std::u16string s16;
const char16_t *c16_2 = s16.c_str();
consume(c16); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_scope_char32_t_data() {
const char32_t *c32;
{
std::u32string s32;
c32 = s32.data(); // expected-note {{Pointer to inner buffer of 'std::u32string' obtained here}}
} // expected-note {{Inner buffer of 'std::u32string' deallocated by call to destructor}}
std::u32string s32;
const char32_t *c32_2 = s32.data();
consume(c32); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void multiple_symbols(bool cond) {
const char *c1, *d1;
{
std::string s1;
c1 = s1.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
d1 = s1.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
const char *local = s1.c_str();
consume(local); // no-warning
} // expected-note {{Inner buffer of 'std::string' deallocated by call to destructor}}
// expected-note@-1 {{Inner buffer of 'std::string' deallocated by call to destructor}}
std::string s2;
const char *c2 = s2.c_str();
if (cond) {
// expected-note@-1 {{Assuming 'cond' is true}}
// expected-note@-2 {{Taking true branch}}
// expected-note@-3 {{Assuming 'cond' is false}}
// expected-note@-4 {{Taking false branch}}
consume(c1); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
} else {
consume(d1); // expected-warning {{Inner pointer of container used after re/deallocation}}
} // expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_scope_ok(bool cond) {
const char *c, *d;
std::string s;
{
c = s.c_str();
d = s.data();
}
if (cond)
consume(c); // no-warning
else
consume(d); // no-warning
}
void deref_after_equals() {
const char *c;
std::string s = "hello";
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s = "world"; // expected-note {{Inner buffer of 'std::string' reallocated by call to 'operator='}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_plus_equals() {
const char *c;
std::string s = "hello";
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s += " world"; // expected-note {{Inner buffer of 'std::string' reallocated by call to 'operator+='}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_clear() {
const char *c;
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.clear(); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'clear'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_append() {
const char *c;
std::string s = "hello";
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.append(2, 'x'); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'append'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_assign() {
const char *c;
std::string s;
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.assign(4, 'a'); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'assign'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_erase() {
const char *c;
std::string s = "hello";
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.erase(0, 2); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'erase'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_insert() {
const char *c;
std::string s = "ello";
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.insert(0, 1, 'h'); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'insert'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_replace() {
const char *c;
std::string s = "hello world";
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.replace(6, 5, "string"); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'replace'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_pop_back() {
const char *c;
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.pop_back(); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'pop_back'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_push_back() {
const char *c;
std::string s;
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.push_back('c'); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'push_back'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_reserve() {
const char *c;
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.reserve(5); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'reserve'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_resize() {
const char *c;
std::string s;
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.resize(5); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'resize'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_shrink_to_fit() {
const char *c;
std::string s;
c = s.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.shrink_to_fit(); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'shrink_to_fit'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_swap() {
const char *c;
std::string s1, s2;
c = s1.data(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s1.swap(s2); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'swap'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void deref_after_std_data() {
const char *c;
std::string s;
c = std::data(s); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
s.push_back('c'); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'push_back'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
struct S {
std::string s;
const char *name() {
return s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
// expected-note@-1 {{Pointer to inner buffer of 'std::string' obtained here}}
}
void clear() {
s.clear(); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'clear'}}
}
~S() {} // expected-note {{Inner buffer of 'std::string' deallocated by call to destructor}}
};
void cleared_through_method() {
S x;
const char *c = x.name(); // expected-note {{Calling 'S::name'}}
// expected-note@-1 {{Returning from 'S::name'}}
x.clear(); // expected-note {{Calling 'S::clear'}}
// expected-note@-1 {{Returning; inner buffer was reallocated}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void destroyed_through_method() {
S y;
const char *c = y.name(); // expected-note {{Calling 'S::name'}}
// expected-note@-1 {{Returning from 'S::name'}}
y.~S(); // expected-note {{Calling '~S'}}
// expected-note@-1 {{Returning; inner buffer was deallocated}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
//=---------------------------=//
// Other STL functions //
//=---------------------------=//
void STL_func_ref() {
const char *c;
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
std::func_ref(s); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'func_ref'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void STL_func_const_ref() {
const char *c;
std::string s;
c = s.c_str();
std::func_const_ref(s);
consume(c); // no-warning
}
void STL_func_value() {
const char *c;
std::string s;
c = s.c_str();
std::func_value(s);
consume(c); // no-warning
}
void func_ptr_known() {
const char *c;
std::string s;
void (*func_ptr)(std::string &) = std::func_ref<std::string>;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
func_ptr(s); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'func_ref'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void func_ptr_unknown(void (*func_ptr)(std::string &)) {
const char *c;
std::string s;
c = s.c_str();
func_ptr(s);
consume(c); // no-warning
}
void func_default_arg() {
const char *c;
std::string s;
c = s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
default_arg(3, s); // expected-note {{Inner buffer of 'std::string' reallocated by call to 'default_arg'}}
consume(c); // expected-warning {{Inner pointer of container used after re/deallocation}}
// expected-note@-1 {{Inner pointer of container used after re/deallocation}}
}
void func_addressof() {
const char *c;
std::string s;
c = s.c_str();
(void)addressof(s);
consume(c); // no-warning
}
void func_AddressofFn_() {
const char *c;
std::string s;
c = s.c_str();
(void)std::__addressof(s);
consume(c); // no-warning
}
void func_std_data() {
const char *c;
std::string s;
c = std::data(s);
consume(c); // no-warning
}
struct T {
std::string to_string() { return s; }
private:
std::string s;
};
const char *escape_via_return_temp() {
T x;
return x.to_string().c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
// expected-note@-1 {{Inner buffer of 'std::string' deallocated by call to destructor}}
// expected-warning@-2 {{Inner pointer of container used after re/deallocation}}
// expected-note@-3 {{Inner pointer of container used after re/deallocation}}
}
const char *escape_via_return_local() {
std::string s;
return s.c_str(); // expected-note {{Pointer to inner buffer of 'std::string' obtained here}}
// expected-note@-1 {{Inner buffer of 'std::string' deallocated by call to destructor}}
// expected-warning@-2 {{Inner pointer of container used after re/deallocation}}
// expected-note@-3 {{Inner pointer of container used after re/deallocation}}
}
char *c();
class A {};
void no_CXXRecordDecl() {
A a, *b;
*(void **)&b = c() + 1;
*b = a; // no-crash
}
void checkReference(std::string &s) {
const char *c = s.c_str();
}
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