Hello, I am trying to use vec.h to implement a vector of pointers:
typedef void* handle_t; DEF_VEC_I(handle_t); DEF_VEC_ALLOC_I(handle_t,heap); extern VEC(handle_t,heap) *handles; It does not compile:
In function 'VEC_handle_t_must_be_integral_type': error: wrong type argument to bit-complement
The reason is the bit-complement test to decide if the supplied type is integral or not. It does not compile if void* is used: (void)~(void*)0; However, it is obviously possible to use void pointers along with ints because they are equivalent on x86 as specified in i386.h: #define Pmode (TARGET_64BIT ? DImode : SImode) Therefore, we should use the mode of a constant of the type in question to support void pointer vectors. That is, I would like to use the following test: __builtin_mode( (T) 0) == (TARGET_64BIT ? DImode : SImode) Is a builtin like this available in GCC or not? Thanks, Alexey
