On 10/28/2016 02:52 PM, Vineet Gupta wrote: > On 10/28/2016 02:44 PM, Vineet Gupta wrote: >> This is configuration specific, and something caused your compiler to >>> be built assuming that size_t is unsigned long, while the kernel >>> headers are assuming it should be unsigned int. > > So yes this seems to be target specific gcc thing > > for ARC 4.8 > > #define PTRDIFF_TYPE "int" > > ARM > > #ifndef PTRDIFF_TYPE > #define PTRDIFF_TYPE (TARGET_AAPCS_BASED ? "int" : "long int") > #endif > > ARC gcc 6.2 > > #undef PTRDIFF_TYPE > #define PTRDIFF_TYPE "long int" Actually we need to adjust SIZE_TYPE (unsigned int) and PTRDIFF_TYPE (int) in the gcc 6.x to fix this issue. And that is exactly what ARC gcc 4.8 have.