On Thu, 8 Mar 2007, Kai Tietz wrote: > while porting gcc to the new target x86_64-pc-mingw32 I noticed, that on > many places the long type is wrongly used as equivalent for pointers. This > leads for this MS compatible target to some problems, because the long is > just 4 bytes long and the pointer 8 bytes. I found this problems until now > in libc++, libiberty. There are ISO types defined for this case, as > intptr_t and uintptr_t. Is there something defined in the coding style ?
GCC does not know about the target's intptr_t and uintptr_t; you'd need new target macros for that. (They could default to the same as ptrdiff_t and size_t.) GCC does not know about such types for the host either, but already has autoconf support (config/stdint*) for creating a local stdint.h where the host lacks one. You'll need to make sure that autoconf support is used in any host directory where you wish to use intptr_t / uintptr_t. Testcases in the GCC testsuite should generally use __SIZE_TYPE__ and __PTRDIFF_TYPE__ for such cases. Target libraries such as libstdc++ can probably use size_t and ptrdiff_t reasonably safely for this. -- Joseph S. Myers [EMAIL PROTECTED]
