So, when you cast a (void*) to (long), you are losing 32 bits of data in the conversion. Even if you are compiling your program for a 32-bit computer, you should fix your code to remove these warnings, to ensure your code is easily portable to 64-bit. To perform a cast, specify the type that you are casting to in parentheses in front of the value or variable to be converted. It's always a good practice to put your #define's in brackets to avoid such surprise. If your standard library (even if it is not C99) happens to provide these types - use them. C++ how to get the address stored in a void pointer? 10) A prvalue of type pointer to void (possibly cv-qualified) can be converted to pointer to any object type. The dynamic_cast<>operator provides a way to check the actual type of a pointer to a polymorphic class. arrays - I get the error: "cast to smaller integer type 'int' from - the incident has nothing to do with me; can I use this this way? Asking for help, clarification, or responding to other answers. pthread passes the argument as a void*. It solved my problem too. Evaluate integer expressions in a larger size before comparing or assigning to that size.Note that (time_+t)-1 also complies with INT31-C-EX3. It is easier to understand and write than any other assembly language. ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Can Martian regolith be easily melted with microwaves? Update: Today, i download the latest version of cocos2d-x (cocos2d-x 2.2.3). c - Cast int to void* - Stack Overflow However, you are also casting the result of this operation to (void*). Therefore, you need to change it to long long instead of long in windows for 64 bits. error: cast from pointer to smaller type 'unsigned int' loses The reinterpret_cast makes the int the size of a pointer and the warning will stop. Any help with this is appreciated. What is "cast from integer to pointer of different size" warning? The difference between the phonemes /p/ and /b/ in Japanese. But, sure, in that specific case you can pass a local variable address, type casting integer to void* [duplicate]. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. ), For those who are interested. What is the point of Thrower's Bandolier? For the second example you can make sure that sizeof(int) <= sizeof(void *) by using a static_assert -- this way at least you'll get a notice about it.
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cast to void *' from smaller integer type 'int