[Tinycc-devel] About size_t and ptrdiff_t defines in tcc

[Thomas Preud'homme]

I was dealing with a bug report about tcc 0.9.25 having wrong size for size_t 
and ptrdiff_t and realize it was corrected in later commits. However, the new 
definition is different from i386, amd64 and arm ABI which define size_t to 
unsigned int and ptrdiff_t to int on ARM and i386 and define size_t to unsigned 
long and ptrdiff_t to long on amd64. Is there a reason for the divergence?

Below is the related piece of code in tcc mob:

#if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
#else
    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
#endif

Best regards,

Thomas Preud'homme

signature.asc
Description: This is a digitally signed message part.