Tibor Vidók writes: > Porting an application to x86_64 I found a line, where I assign an > uintptr_t to an unsigned int an I wondered why I didnt get any > warning. > I definitely remember that I got warnings in such cases before so I > tried to add some stupid lines to the code to get the warning, but I > couldn't make the code bad enough. > > Is it a gcc-issue? or I forget to add some -Wxxx switches? Or gcc > should't wanr me in case of uintptr_t to <some small> cast? uintptr_t is just a typedef for unsigned long int. If you have a warning for every assignment that caused a truncation you'd have an awful lot of warnings. Any use of uintptr_t should ring an alarm bell. That's the real cause of the bug, not anything else. There are some real uses for uintptr_t, but they are fairly obscure. Andrew.
