add toy.cpp

Change-Id: I5197490b9e8ad16eec45e01449d4f237ea8a1a23

diff --git a/toy.cpp b/toy.cpp
new file mode 100644 (file)
index 0000000..27646bd
--- /dev/null
+++ b/toy.cpp
@@ -0,0 +1,125 @@
+/* contains all autofix checkers */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/********************* ALLOC_SIZE_MISMATCH *********************/
+struct Person {
+  int age;
+  char name[20];
+};
+
+struct Person *alloc_size_mismatch(void) {
+  struct Person *ptr;
+  ptr = (struct Person *)malloc(sizeof(ptr));
+  return ptr;
+}
+/****************************************************************/
+
+/********************* BAD_ALLOC_ARITHMETIC  *********************/
+char *bad_alloc_arithmetic(char *str, int len) {
+  char *res = malloc(len) + 1;
+
+  memcpy(res, str, len);
+  res[len] = '\0';
+
+  return res;
+}
+/****************************************************************/
+
+/********************* BAD_COPY_PASTE  *********************/
+int callee(int x) { return x * x + 1; }
+
+int bad_copy_paste(int a, int b, int x) {
+  int result = 0;
+
+  // copied
+  if (b > 0) {
+    result = callee(a) + callee(x); // auto fix
+  }
+
+  // maybe origin
+  if (a > 0) {
+    result = callee(a) + callee(x);
+  }
+
+  return result;
+}
+/****************************************************************/
+
+/********************* BAD_SIZEOF  *********************/
+void bad_sizeof() {
+  short s;
+  memset(&s, 0, sizeof(&s)); // auto fix
+}
+/****************************************************************/
+
+/********************* MEMSET_SIZE_MISMATCH  *********************/
+typedef struct {
+  int x;
+  int y;
+} FooBarStruct;
+
+void memset_size_mismatch() {
+  FooBarStruct fbs;
+  memset(&fbs, 0, 4); // auto fix
+}
+/****************************************************************/
+
+/********************* NO_CAST.INTEGER_DIVISION  *********************/
+float divv(int a, int b) { return (a / b); }
+void no_cast_integer_division() { printf("%0.2f\n", divv(10, 4)); }
+/****************************************************************/
+
+/********************* NO_CAST.INTEGER_OVERFLOW  *********************/
+long mult(int a, int b) { return (a * b); } // auto fix
+void no_cast_integer_overflow() { printf("%ld\n", mult(0x7FFFFFFF, 2)); }
+/****************************************************************/
+
+/********************* NO_EFFECT  *********************/
+void no_effect() {
+  int *ptr1, *ptr2;
+  ptr1 = new int(10);
+  ptr2 = new int(15);
+  delete ptr1, ptr2;
+}
+/****************************************************************/
+
+/********************* SIZEOF_POINNTER_TYPE  *********************/
+struct buffer {
+  char b[100];
+};
+
+void sizeof_pointer_type() {
+  struct buffer buf;
+  memset(&buf, 0, sizeof(&buf));
+
+  struct buffer *pbuf;
+  pbuf = (struct buffer *)malloc(sizeof(struct buffer *)); // auto fix
+}
+/****************************************************************/
+
+/********************* SIZEOF_POINTER_TYPE.CHAR  *********************/
+void sizeof_pointer_type_char(int len, char *pc) {
+  pc = (char *)malloc(len * sizeof(pc));
+}
+/****************************************************************/
+
+/********************* UNREACHABLE_CODE.NO_PATH  *********************/
+int unreachable_code_no_path(int a) {
+  int ret = 0;
+  switch (a) {
+  case 1:
+    ret = 2;
+    break;
+    ret = 3; // unreachable
+  default:
+    ret = -1;
+    break;
+  }
+  return ret;
+  ret = ret * a; // unreachable
+}
+/****************************************************************/
+