FFI: Fix cdata equality comparison against strings.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lj_crecord.c b/src/lj_crecord.c
index 71f3d069..8612f005 100644
--- a/src/lj_crecord.c
+++ b/src/lj_crecord.c
@@ -1421,7 +1421,9 @@ void LJ_FASTCALL recff_cdata_arith(jit_State *J, RecordFFData *rd)
           ct = ctype_child(cts, cct);
           tr = lj_ir_kint(J, (int32_t)ofs);
         }  /* else: interpreter will throw. */
-      }  /* else: interpreter will throw. */
+      } else {
+        tr = emitir(IRT(IR_ADD, IRT_PTR), tr, lj_ir_kintp(J, sizeof(GCstr)));
+      }
     } else if (!tref_isnum(tr)) {
       tr = 0;
     }