🚀 go-pugleaf

I am trying to update my compiler from 1.4 to 2.1,  can you help me
with the following questions :

1)  how do I tell gcc not to generate call ___main  in main() ?

2)  it compiles 
		int x = 1;
    to 
	(insn 8 7 10 (set (mem:QI (plus:SI (reg:SI 9)
               		(const_int -1)))
       		(const_int 1)) -1 (nil)
   	(nil))

    Why memory has QImode ?  what did I do wrong ?   the related macros
    are defined as following (they worked in version 1.4)

#define BITS_PER_UNIT 32
#define BITS_PER_WORD 32
#define UNITS_PER_WORD 1

#define INT_TYPE_SIZE 		32
#define SHORT_TYPE_SIZE 	INT_TYPE_SIZE
#define LONG_LONG_TYPE_SIZE 	INT_TYPE_SIZE
#define CHAR_TYPE_SIZE 		INT_TYPE_SIZE


Thanks

Dong