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bugfix: lua stack is broken when trace abort during recording nyi stitch.

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doujiang24 2021-06-13 19:28:08 +08:00
parent 3fbf51bb99
commit f5d5fea538
1 changed files with 5 additions and 0 deletions
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5
src/lj_ffrecord.c
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@ -107,6 +107,11 @@ static void recff_stitch(jit_State *J)
const BCIns *pc = frame_pc(base-1); const BCIns *pc = frame_pc(base-1);
TValue *pframe = frame_prevl(base-1); TValue *pframe = frame_prevl(base-1);
MSize maxsnap = (MSize)J->param[JIT_P_maxsnap];
MSize nsnap = J->cur.nsnap;
if (nsnap >= maxsnap)
lj_trace_err_info(J, LJ_TRERR_SNAPOV);
/* Move func + args up in Lua stack and insert continuation. */ /* Move func + args up in Lua stack and insert continuation. */
memmove(&base[1], &base[-1-LJ_FR2], sizeof(TValue)*nslot); memmove(&base[1], &base[-1-LJ_FR2], sizeof(TValue)*nslot);
setframe_ftsz(nframe, ((char *)nframe - (char *)pframe) + FRAME_CONT); setframe_ftsz(nframe, ((char *)nframe - (char *)pframe) + FRAME_CONT);