diff --git a/test/testbufferoverrun.cpp b/test/testbufferoverrun.cpp
index aed86428d..3311b6904 100644
--- a/test/testbufferoverrun.cpp
+++ b/test/testbufferoverrun.cpp
@@ -3281,6 +3281,13 @@ private:
               "    g(u\"Hello\" + 7);\n"
               "}");
         ASSERT_EQUALS("[test.cpp:2]: (portability) Undefined behaviour, pointer arithmetic 'u\"Hello\"+7' is out of bounds.\n", errout.str());
+
+        check("void f() {\n" // #4647
+              "    int val = 5;\n"
+              "    std::string hi = \"hi\" + val;\n"
+              "    std::cout << hi << std::endl;\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:3]: (portability) Undefined behaviour, pointer arithmetic '\"hi\"+val' is out of bounds.\n", errout.str());
     }
 
 
diff --git a/test/testgarbage.cpp b/test/testgarbage.cpp
index e014918c1..f9197ba9f 100644
--- a/test/testgarbage.cpp
+++ b/test/testgarbage.cpp
@@ -243,6 +243,8 @@ private:
         TEST_CASE(garbageCode215); // daca@home script with extension .c
         TEST_CASE(garbageCode216); // #7884
         TEST_CASE(garbageCode217); // #10011
+        TEST_CASE(garbageCode218); // #8763
+        TEST_CASE(garbageCode219); // #10101
 
         TEST_CASE(garbageCodeFuzzerClientMode1); // test cases created with the fuzzer client, mode 1
 
@@ -1684,6 +1686,17 @@ private:
                                "}"), InternalError);
     }
 
+    void garbageCode218() { // #8763
+        checkCode("d f(){t n0000 const[]n0000+0!=n0000,(0)}"); // don't crash
+    }
+    void garbageCode219() { // #10101
+        checkCode("typedef void (*func) (addr) ;\n"
+                  "void bar(void) {\n"
+                  "    func f;\n"
+                  "    f & = (func)42;\n"
+                  "}\n"); // don't crash
+    }
+
     void syntaxErrorFirstToken() {
         ASSERT_THROW(checkCode("&operator(){[]};"), InternalError); // #7818
         ASSERT_THROW(checkCode("*(*const<> (size_t); foo) { } *(*const (size_t)() ; foo) { }"), InternalError); // #6858
diff --git a/test/testnullpointer.cpp b/test/testnullpointer.cpp
index 07c001928..dc5c18c12 100644
--- a/test/testnullpointer.cpp
+++ b/test/testnullpointer.cpp
@@ -1204,6 +1204,12 @@ private:
                   "}", true);
             ASSERT_EQUALS("", errout.str());
         }
+
+        check("void f() {\n" // #5979
+              "    int* const crash = 0;\n"
+              "    *crash = 0;\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:3]: (error) Null pointer dereference: crash\n", errout.str());
     }
 
     // Ticket #2350