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don't refer to invalid memory region by ci->ip

This commit is contained in:
Yuichi Nishiwaki 2014-08-13 14:55:51 +09:00
parent b2e1c523bc
commit 8d06a00483
1 changed files with 5 additions and 2 deletions
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7
src/vm.c
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@ -1029,7 +1029,10 @@ pic_apply(pic_state *pic, struct pic_proc *proc, pic_value argv)
pic_value pic_value
pic_apply_trampoline(pic_state *pic, struct pic_proc *proc, pic_value args) pic_apply_trampoline(pic_state *pic, struct pic_proc *proc, pic_value args)
{ {
static const pic_code iseq = { OP_TAILCALL, { .i = -1 } }; static const pic_code iseq[2] = {
{ OP_NOP, {} },
{ OP_TAILCALL, { .i = -1 } }
};
pic_value v, *sp; pic_value v, *sp;
pic_callinfo *ci; pic_callinfo *ci;
@ -1042,7 +1045,7 @@ pic_apply_trampoline(pic_state *pic, struct pic_proc *proc, pic_value args)
} }
ci = PUSHCI(); ci = PUSHCI();
ci->ip = (pic_code *)&iseq - 1; ci->ip = (pic_code *)iseq;
ci->fp = pic->sp; ci->fp = pic->sp;
ci->retc = pic_length(pic, args); ci->retc = pic_length(pic, args);