Thank you Jonathan for your reply. >> Hi, >> >> What does control or what is the rule for the type returned by >> __typeof__ (const int) ? > The type of a const int is ... a const int, of course. > > I assume you mean integer constant, not "const int". Yes, sorry, I meant const_int rtx... > >> On a private target (using newlib-stdint.h), sizeof(__typeof__ (-32768)) >> returns 4 but sizeof(__typeof__ (-32767)) returns 2... > This has nothing to do with __typeof__ only to do with the rules of C > that determine the type of an integer constant, see > http://en.cppreference.com/w/c/language/integer_constant#The_type_of_the_integer_constant > > Presumably your private port has a 16-bit int, so -32768 doesn't fit > in int and has a 32-bit type instead. If that's not the case then you > have a bug in the port and it's selecting the wrong type for the > integer constant -32767. Yes indeed, the private target has HI int. The pb is that both -32768 (0x8000) and 32767 should fit into an int (an int16_t actually), and the newlib <stdlib.h> defines INT16_MIN as -32768 . This makes gcc.gd/stdint-x.h fail... The first tree dumps show SI const/type instead of HI. Is it the parser which computes the type? Aurélien
