--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/Analysis/memory-model.cpp	Tue Jun 08 06:07:14 2021 +0900
@@ -0,0 +1,157 @@
+// RUN: %clang_analyze_cc1 -std=c++20 \
+// RUN:  -analyzer-checker=core,unix,cplusplus,debug.ExprInspection \
+// RUN:  -triple x86_64-unknown-linux-gnu \
+// RUN:  -verify %s
+
+#include "Inputs/system-header-simulator-cxx.h"
+
+typedef __SIZE_TYPE__ size_t;
+void *malloc(size_t);
+void *alloca(size_t);
+void *realloc(void *ptr, size_t size);
+void *calloc(size_t number, size_t size);
+void free(void *);
+
+struct S {
+  int f;
+};
+
+void clang_analyzer_dump(int);
+void clang_analyzer_dump(const void *);
+void clang_analyzer_dumpExtent(int);
+void clang_analyzer_dumpExtent(const void *);
+void clang_analyzer_dumpElementCount(int);
+void clang_analyzer_dumpElementCount(const void *);
+
+int clang_analyzer_getExtent(void *);
+void clang_analyzer_eval(bool);
+
+void var_simple_ref() {
+  int a = 13;
+  clang_analyzer_dump(&a);             // expected-warning {{a}}
+  clang_analyzer_dumpExtent(&a);       // expected-warning {{4 S64b}}
+  clang_analyzer_dumpElementCount(&a); // expected-warning {{1 S64b}}
+}
+
+void var_simple_ptr(int *a) {
+  clang_analyzer_dump(a);             // expected-warning {{SymRegion{reg_$0<int * a>}}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{extent_$1{SymRegion{reg_$0<int * a>}}}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{(extent_$1{SymRegion{reg_$0<int * a>}}) / 4}}
+}
+
+void var_array() {
+  int a[] = {1, 2, 3};
+  clang_analyzer_dump(a);             // expected-warning {{Element{a,0 S64b,int}}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{12 S64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{3 S64b}}
+}
+
+void string() {
+  clang_analyzer_dump("foo");             // expected-warning {{Element{"foo",0 S64b,char}}}
+  clang_analyzer_dumpExtent("foo");       // expected-warning {{4 S64b}}
+  clang_analyzer_dumpElementCount("foo"); // expected-warning {{4 S64b}}
+}
+
+void struct_simple_ptr(S *a) {
+  clang_analyzer_dump(a);             // expected-warning {{SymRegion{reg_$0<struct S * a>}}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{extent_$1{SymRegion{reg_$0<struct S * a>}}}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{(extent_$1{SymRegion{reg_$0<struct S * a>}}) / 4}}
+}
+
+void field_ref(S a) {
+  clang_analyzer_dump(&a.f);             // expected-warning {{a.f}}
+  clang_analyzer_dumpExtent(&a.f);       // expected-warning {{4 S64b}}
+  clang_analyzer_dumpElementCount(&a.f); // expected-warning {{1 S64b}}
+}
+
+void field_ptr(S *a) {
+  clang_analyzer_dump(&a->f);             // expected-warning {{SymRegion{reg_$0<struct S * a>}.f}}
+  clang_analyzer_dumpExtent(&a->f);       // expected-warning {{4 S64b}}
+  clang_analyzer_dumpElementCount(&a->f); // expected-warning {{1 S64b}}
+}
+
+void symbolic_array() {
+  int *a = new int[3];
+  clang_analyzer_dump(a);             // expected-warning {{Element{HeapSymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{12 S64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{3 S64b}}
+  delete[] a;
+}
+
+void symbolic_placement_new() {
+  char *buf = new char[sizeof(int) * 3];
+  int *a = new (buf) int(12);
+  clang_analyzer_dump(a);             // expected-warning {{Element{HeapSymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{12 S64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{3 S64b}}
+  delete[] buf;
+}
+
+void symbolic_malloc() {
+  int *a = (int *)malloc(12);
+  clang_analyzer_dump(a);             // expected-warning {{Element{HeapSymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{12 U64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{3 S64b}}
+  free(a);
+}
+
+void symbolic_alloca() {
+  int *a = (int *)alloca(12);
+  clang_analyzer_dump(a);             // expected-warning {{Element{HeapSymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{12 U64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{3 S64b}}
+}
+
+void symbolic_complex() {
+  int *a = (int *)malloc(4);
+  clang_analyzer_dumpExtent(a);       // expected-warning {{4 U64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{1 S64b}}
+
+  int *b = (int *)realloc(a, sizeof(int) * 2);
+  clang_analyzer_dumpExtent(b);       // expected-warning {{8 U64b}}
+  clang_analyzer_dumpElementCount(b); // expected-warning {{2 S64b}}
+  free(b);
+
+  int *c = (int *)calloc(3, 4);
+  clang_analyzer_dumpExtent(c);       // expected-warning {{12 U64b}}
+  clang_analyzer_dumpElementCount(c); // expected-warning {{3 S64b}}
+  free(c);
+}
+
+void signedness_equality() {
+  char *a = new char[sizeof(char) * 13];
+  char *b = (char *)malloc(13);
+
+  clang_analyzer_dump(clang_analyzer_getExtent(a)); // expected-warning {{13 S64b}}
+  clang_analyzer_dump(clang_analyzer_getExtent(b)); // expected-warning {{13 U64b}}
+  clang_analyzer_eval(clang_analyzer_getExtent(a) ==
+                      clang_analyzer_getExtent(b));
+  // expected-warning@-2 {{TRUE}}
+
+  delete[] a;
+  free(b);
+}
+
+void default_new_aligned() {
+  struct alignas(32) S {};
+
+  S *a = new S[10];
+
+  clang_analyzer_dump(a);             // expected-warning {{Element{HeapSymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning {{320 S64b}}
+  clang_analyzer_dumpElementCount(a); // expected-warning {{10 S64b}}
+
+  delete[] a;
+}
+
+void *operator new[](std::size_t, std::align_val_t, bool hack) throw();
+
+void user_defined_new() {
+  int *a = new (std::align_val_t(32), true) int[10];
+
+  clang_analyzer_dump(a);             // expected-warning {{Element{SymRegion{conj}}
+  clang_analyzer_dumpExtent(a);       // expected-warning-re {{{{^extent_\$[0-9]\{SymRegion{conj}}}}
+  clang_analyzer_dumpElementCount(a); // expected-warning-re {{{{^\(extent_\$[0-9]\{SymRegion{conj.*\) / 4}}}}
+
+  operator delete[](a, std::align_val_t(32));
+}