Improved `Class#new` method
The number of registers used is reduced.
Also, previously `R6` and` R7` were used, which exceeded the limit of `new_irep.nregs = 6`.
This could cause the VM stack to overrun.
MODIFY
src/class.c
src/class.c
@@ -2840,17 +2840,17 @@ static const mrb_code new_iseq[] = {
OP_LOADSELF, 4, // OP_LOADSELF R4
OP_SEND, 4, 0, 0, // OP_SEND R4 :allocate n=0
OP_MOVE, 0, 4, // OP_MOVE R0 R4
- OP_MOVE, 5, 1, // OP_MOVE R5 R1 (*)
- OP_MOVE, 6, 2, // OP_MOVE R6 R2 (**)
- OP_MOVE, 7, 3, // OP_MOVE R7 R3
- OP_SENDB, 4, 1, 255, // OP_SENDB R4 :initialize n=*|nk=*
+ OP_MOVE, 4, 3, // OP_MOVE R4 R3 (&)
+ OP_MOVE, 3, 2, // OP_MOVE R3 R2 (**)
+ OP_MOVE, 2, 1, // OP_MOVE R2 R1 (*)
+ OP_SSENDB, 1, 1, 255, // OP_SSENDB R1 :initialize n=*|nk=*
OP_RETURN, 0 // OP_RETURN R0
};
MRB_PRESYM_DEFINE_VAR_AND_INITER(new_syms, 2, MRB_SYM(allocate), MRB_SYM(initialize))
static const mrb_irep new_irep = {
- 3, 6, 0, MRB_IREP_STATIC,
+ 4, 5, 0, MRB_IREP_STATIC,
new_iseq, NULL, new_syms, NULL, NULL, NULL,
sizeof(new_iseq), 0, 2, 0, 0,
};

Improved `Class#new` method

The number of registers used is reduced.

Also, previously `R6` and` R7` were used, which exceeded the limit of `new_irep.nregs = 6`.
This could cause the VM stack to overrun.