warn « Cast « C Q&A

1. Warning when casting from supposedly same size types    stackoverflow.com

I can't figure this warning out. It says I am casting a MY_KEY to a HKEY of greater size, but they would appear to be the same size (32 bits)?

//test.c
//compile as ...

2. warning while making cast    bytes.com

Hello, given a simple code: #include long hyp(long height, long base) { return sqrt(height * height + base * base); } int main(void) { long h = hyp(10, 20); return 0; } I compile this on Debian 4.0 (gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)): #gcc -ansi -pedantic -W -Wall -lm hyp.c As I understand, according to standard sqrt returns ...

3. HOWTO: Get Warning on implicit type casts that may lead to data loss    bytes.com

Hello everyone, I'm migrating a C++ program from 32-bit systems to 64-bit systems. The old programmers used some annoying assignments like assigning "long" to "int", which may lead to data loss. Is it possible to let the compiler (specifically, GCC) spew some warnings on this kind of implicit type casts? Or you suggest use some other static source codes analysis tools? ...

4. casting problems warnings segmentation fault.    cboard.cprogramming.com

casting problems warnings segmentation fault. Code: #include 2 #include 3 /* function prototypes */ 4 int printMenu(); 5 void printArray ( int [ ], int ); 6 int addInt ( int [ ], int, int); 7 int delINT ( int [ ], int, int); 8 int exists ( int [ ], int, int); 9 void insertSort ( int [ ...