Add tests for #9981, #11583, #12436, #14736 (#8929)

Author: chrchr-github

test/cli/fuzz-crash_c/crash-3be27d29a1cc703716c646e3cfdf21cc896654fa

@@ -0,0 +1 @@
+i(){!:!=!!?:1}

test/testclass.cpp

@@ -7028,6 +7028,18 @@ class TestClass : public TestFixture {
                    "    }\n"
                    "};\n");
         ASSERT_EQUALS("", errout_str());
+
+        checkConst("struct A {\n" // #9981
+                   "    int a = 0;\n"
+                   "    auto operator[](int x) -> int& {\n"
+                   "        a = 1;\n"
+                   "        return a;\n"
+                   "    }\n"
+                   "    int f() {\n"
+                   "        return (*this)[0];\n"
+                   "    }\n"
+                   "};\n");
+        ASSERT_EQUALS("", errout_str());
     }
 
     void const102() {

test/testother.cpp

@@ -12999,6 +12999,16 @@ class TestOther : public TestFixture {
               "}\n");
         ASSERT_EQUALS("[test.cpp:4:9]: (warning) Access of moved variable 'p'. [accessMoved]\n"
                       "[test.cpp:5:9]: (warning) Access of moved variable 'p'. [accessMoved]\n", errout_str());
+
+        check("void h(std::unique_ptr<int>);\n" // #12436
+              "void g(int);\n"
+              "void f() {\n"
+              "    std::unique_ptr<int> p = std::make_unique<int>(5);\n"
+              "    int* w = p.get();\n"
+              "    h(std::move(p));\n"
+              "    g(*w);\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:5:10]: (style) Variable 'w' can be declared as pointer to const [constVariablePointer]\n", errout_str());
     }
 
     void moveAndAddressOf() {

test/teststl.cpp

@@ -7078,6 +7078,18 @@ class TestStl : public TestFixture {
               dinit(CheckOptions, $.inconclusive = true));
         ASSERT_EQUALS("", errout_str());
 
+        check("template<typename T>\n" // #11583
+              "int g() { return 0; }\n"
+              "void f() {\n"
+              "    std::vector<int> v(1);\n"
+              "    auto itr = v.begin() + g<int>();\n"
+              "    std::vector<int> v2(itr, v.end());\n"
+              "    v.erase(itr, v.end());\n"
+              "    v.push_back(v2.size());\n"
+              "}\n",
+              dinit(CheckOptions, $.inconclusive = true));
+        ASSERT_EQUALS("", errout_str());
+
         // #13410
         check("int f(std::vector<int>& v) {\n"
               "    const int* i = &*v.cbegin();\n"