CWE-704 不正确的类型转换 类漏洞列表 66

unsigned int readdata () { int amount = 0; ... amount = accessmainframe(); ... return amount; }

#define NAME_TYPE 1 #define ID_TYPE 2 struct MessageBuffer { int msgType; union { char *name; int nameID; }; }; int main (int argc, char **argv) { struct MessageBuffer buf; char *defaultMessage = "Hello World"; buf.msgType = NAME_TYPE; buf.name = defaultMessage; printf("Pointer of buf.name is %p\n", buf.name); /* This particular value for nameID is used to make the code architecture-independent. If coming from untrusted input, it could be any value. */ buf.nameID = (int)(defaultMessage + 1); printf("Pointer of buf.name is now %p\n", buf.name); if (buf.msgType == NAME_TYPE) { printf("Message: %