diff options
| -rw-r--r-- | ujit_codegen.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/ujit_codegen.c b/ujit_codegen.c index 541f74b964..26aa4ffcf0 100644 --- a/ujit_codegen.c +++ b/ujit_codegen.c @@ -525,6 +525,15 @@ gen_getinstancevariable(jitstate_t* jit, ctx_t* ctx) test(cb, flags_opnd, imm_opnd(ROBJECT_EMBED)); jnz_ptr(cb, side_exit); + // check that the extended table is big enough + if (ivar_index >= ROBJECT_EMBED_LEN_MAX + 1) + { + // Check that the slot is inside the extended table (num_slots > index) + x86opnd_t num_slots = mem_opnd(32, REG0, offsetof(struct RObject, as.heap.numiv)); + cmp(cb, num_slots, imm_opnd(ivar_index)); + jle_ptr(cb, side_exit); + } + // Get a pointer to the extended table x86opnd_t tbl_opnd = mem_opnd(64, REG0, offsetof(struct RObject, as.heap.ivptr)); mov(cb, REG0, tbl_opnd); |