1 files changed, 6 insertions, 0 deletions

diff --git a/src/buildvm_ppc.dasc b/src/buildvm_ppc.dasc
index d9239d6b..06fc5078 100644
--- a/src/buildvm_ppc.dasc
+++ b/src/buildvm_ppc.dasc
@@ -1098,8 +1098,11 @@ static void build_subroutines(BuildCtx *ctx)
   |  checktab TAB:CARG1
   |   lwz PC, FRAME_PC(BASE)
   |  checkfail ->fff_fallback
+  |  lwz TAB:TMP2, TAB:CARG1->metatable
   |  evldd CFUNC:TMP0, CFUNC:RB->upvalue[0]
+  |  cmplwi TAB:TMP2, 0
   |  la RA, -8(BASE)
+  |  bne ->fff_fallback
   |   evstdd TAB:CARG1, 0(BASE)
   |   evstdd TISNIL, 8(BASE)
   |  li RD, (3+1)*8
@@ -1150,8 +1153,11 @@ static void build_subroutines(BuildCtx *ctx)
   |  checktab TAB:CARG1
   |   lwz PC, FRAME_PC(BASE)
   |  checkfail ->fff_fallback
+  |  lwz TAB:TMP2, TAB:CARG1->metatable
   |  evldd CFUNC:TMP0, CFUNC:RB->upvalue[0]
+  |  cmplwi TAB:TMP2, 0
   |  la RA, -8(BASE)
+  |  bne ->fff_fallback
   |    evsplati TMP1, 0
   |   evstdd TAB:CARG1, 0(BASE)
   |    evstdd TMP1, 8(BASE)