[test] Add unit tests for review status config files

They break right now, but should test the expected behaviour.

analyzer/tests/projects/cpp/Makefile

@@ -0,0 +1,32 @@
+OBJS = $(SRCS:.cpp=.o)
+
+CXXFLAGS = -Wno-all -Wno-extra -std=c++11
+
+SRCS = call_and_message.cpp \
+	   divide_zero.cpp \
+	   divide_zero_duplicate.cpp \
+	   file_to_be_skipped.cpp \
+	   new_delete.cpp \
+	   null_dereference.cpp \
+	   stack_address_escape.cpp \
+	   skip_header.cpp \
+	   path_begin1.cpp \
+	   path_begin2.cpp \
+	   statistical_checkers.cpp
+
+.cpp.o:
+	$(CXX) $(CXXFLAGS) -c $<  -o $@
+
+all: $(OBJS) space path_begin_var1 path_begin_var2
+
+space:
+	$(CXX) -c has\ a\ space.cpp -Wno-all -Wno-extra
+
+path_begin_var1:
+	$(CXX) -c -DVAR=1 path_begin.cpp -Wno-all -Wno-extra
+
+path_begin_var2:
+	$(CXX) -c -DVAR=2 path_begin.cpp -Wno-all -Wno-extra
+
+clean:
+	rm -rf *.o

analyzer/tests/projects/cpp/call_and_message.cpp

@@ -0,0 +1,47 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.CallAndMessage (C, C++, ObjC)
+// Check for logical errors for function calls and Objective-C message
+// expressions (e.g., uninitialized arguments, null function pointers).
+
+struct S {
+    int x;
+};
+
+void f(struct S s);
+
+void test1() {
+  struct S s;
+  // insert_suppress_here
+  f(s); // warn: passed-by-value arg contain uninitialized data
+}
+
+void test2() {
+  void (*foo)(void);
+  foo(); // warn: function pointer is uninitialized
+}
+
+void test3() {
+  void (*foo)(void);
+  foo = 0;
+  foo(); // warn: function pointer is null
+}
+
+class C {
+public:
+  void f();
+};
+
+void test4() {
+  C *pc;
+  pc->f(); // warn: object pointer is uninitialized
+}
+
+void test5() {
+  C *pc = 0;
+  pc->f(); // warn: object pointer is null <- non breaking space here save the file in latin1 (ISO-8895-1)
+}

analyzer/tests/projects/cpp/divide_zero.cpp

@@ -0,0 +1,19 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.DivideZero (C, C++, ObjC)
+// Check for division by zero.
+
+void test1(int z) {
+  if (z == 0)
+    int x = 1 / z; // warn
+}
+
+void test2() {
+  int x = 1;
+  // insert_suppress_here
+  int y = x % 0; // warn
+}

analyzer/tests/projects/cpp/divide_zero_duplicate.cpp

@@ -0,0 +1,13 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.DivideZero (C, C++, ObjC)
+// Check for division by zero.
+
+void test1(int z) {
+  if (z == 0)
+    int x = 1 / z; // warn
+}

analyzer/tests/projects/cpp/file_to_be_skipped.cpp

@@ -0,0 +1,12 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// This file is to be included in a skip list file.
+
+void skipped_test(int z) {
+  if (z == 0)
+    int x = 1 / z; // warn
+}

analyzer/tests/projects/cpp/has a space.cpp

@@ -0,0 +1,14 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.NullDereference (C, C++, ObjC)
+// Check for dereferences of null pointers.
+
+int main()
+{
+  int *p = 0;
+  return *p + 4;
+}

analyzer/tests/projects/cpp/new_delete.cpp

@@ -0,0 +1,50 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// cplusplus.NewDelete (C++)
+// Check for double-free, use-after-free and offset problems involving C++
+// delete.
+
+void f(int *p);
+
+void testUseMiddleArgAfterDelete(int *p) {
+  delete p;
+  f(p); // warn: use after free
+}
+
+class SomeClass {
+public:
+  void f();
+};
+
+void test1() {
+  SomeClass *c = new SomeClass;
+  delete c;
+  c->f(); // warn: use after free
+}
+
+void test2() {
+  int *p = (int *)__builtin_alloca(sizeof(int));
+  delete p; // warn: deleting memory allocated by alloca
+}
+
+void test3() {
+  int *p = new int;
+  delete p;
+  delete p; // warn: attempt to free released °
+}
+
+void test4() {
+  int i;
+  delete &i; // warn: delete address of local
+}
+
+void test() {
+  int *p = new int[1];
+  delete[] (++p);
+    // warn: argument to 'delete[]' is offset by 4 bytes
+    // from the start of memory allocated by 'new[]'
+}

analyzer/tests/projects/cpp/null_dereference.cpp

@@ -0,0 +1,30 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.NullDereference (C, C++, ObjC)
+// Check for dereferences of null pointers.
+
+void test1(int *p) {
+  if (p)
+    return;
+
+  int x = p[0]; // warn
+}
+
+void test2(int *p) {
+  if (!p)
+    *p = 0; // warn
+}
+
+class C {
+public:
+  int x;
+};
+
+void test3() {
+  C *pc = 0;
+  int k = pc->x; // warn
+}

analyzer/tests/projects/cpp/path_begin.cpp

@@ -0,0 +1,31 @@
+
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+
+int div_zero2(int z, int w) {
+
+  if (z == 0){
+    int x = 1 / z; // warn
+    return x;
+  }
+
+  if (w==0){
+    z=0;
+    int x = 1 / z; // warn
+    return x;
+  }
+
+}
+
+int f(int x){
+    return div_zero2(0, x);
+}
+
+int g(int x){
+    return div_zero2(x, 0);
+}
+

analyzer/tests/projects/cpp/path_begin1.cpp

@@ -0,0 +1,14 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+#include "path_end.h"
+
+int f(int x){
+    if(x == 0){
+        x = div_zero(x);
+        return x;
+    }
+}

analyzer/tests/projects/cpp/path_begin2.cpp

@@ -0,0 +1,17 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+#include "path_end.h"
+
+int g(int y){
+    return div_zero(y);
+}
+
+int test(int z){
+    if(z == 0){
+        return g(z);
+    }
+}

analyzer/tests/projects/cpp/path_end.h

@@ -0,0 +1,13 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+int div_zero(int z) {
+  if (z == 0){
+    int x = 1 / z; // warn
+    return x;
+  }
+
+}

analyzer/tests/projects/cpp/project_info.json

@@ -0,0 +1,5 @@
+{
+    "name": "cpp",
+    "clean_cmd": "make clean",
+    "build_cmd": "make"
+}

analyzer/tests/projects/cpp/skip.h

@@ -0,0 +1,11 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+int null_div(int z) {
+    int x = z / 0; // warn
+    return x;
+}
+

analyzer/tests/projects/cpp/skip_header.cpp

@@ -0,0 +1,18 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+#include "skip.h"
+
+int test() {
+    int x = null_div(42);
+    return x;
+}
+
+int test1(int i) {
+    int y = i / 0; // warn
+    return y;
+}
+

analyzer/tests/projects/cpp/stack_address_escape.cpp

@@ -0,0 +1,25 @@
+// -------------------------------------------------------------------------
+//  Part of the CodeChecker project, under the Apache License v2.0 with
+//  LLVM Exceptions. See LICENSE for license information.
+//  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// -------------------------------------------------------------------------
+
+// core.StackAddressEscape (C)
+// Check that addresses of stack memory do not escape the function.
+
+char const *p;
+
+void test1() {
+  char const str[] = "string";
+  p = str; // warn
+}
+
+void* test2() {
+  return __builtin_alloca(12); // warn
+}
+
+void test3() {
+  static int *x;
+  int y;
+  x = &y; // warn
+}