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Fix anchoring for string buffer set() method.

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Thanks to Peter Cawley. #1125
This commit is contained in:
Mike Pall 2023-12-10 15:33:47 +01:00
parent e4168fae5b
commit e02cb19b57
1 changed files with 9 additions and 0 deletions
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9
src/lj_ffrecord.c
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@ -1204,6 +1204,15 @@ static void LJ_FASTCALL recff_buffer_method_set(jit_State *J, RecordFFData *rd)
if (tref_isstr(tr)) {
TRef trp = emitir(IRT(IR_STRREF, IRT_PGC), tr, lj_ir_kint(J, 0));
TRef len = emitir(IRTI(IR_FLOAD), tr, IRFL_STR_LEN);
IRIns *irp = IR(tref_ref(trp));
/* Anchor (potentially different) obj into which trp points after fold. */
if (irp->o == IR_STRREF) {
tr = irp->op1;
} else if (irp->o == IR_KKPTR && !tref_isk(tr)) {
GCstr *str = strV(&rd->argv[1]); /* Constify the argument. */
tr = lj_ir_kstr(J, str);
trp = lj_ir_kkptr(J, (char *)strdata(str));
}
lj_ir_call(J, IRCALL_lj_bufx_set, trbuf, trp, len, tr);
#if LJ_HASFFI
} else if (tref_iscdata(tr)) {