2711 PetscErrorCode PCBDDCBenignCheck(PC pc, IS zerodiag)  in PCBDDCBenignCheck()  argument
2720   if (zerodiag) {  in PCBDDCBenignCheck()
2730     PetscCall(ISGetLocalSize(zerodiag, &nz));  in PCBDDCBenignCheck()
2731     PetscCall(ISGetIndices(zerodiag, &idxs));  in PCBDDCBenignCheck()
2740     PetscCall(ISRestoreIndices(zerodiag, &idxs));  in PCBDDCBenignCheck()
2770     PetscCall(ISGetIndices(zerodiag, &idxs));  in PCBDDCBenignCheck()
2772     PetscCall(ISRestoreIndices(zerodiag, &idxs));  in PCBDDCBenignCheck()
2794   IS        pressures = NULL, zerodiag = NULL, *bzerodiag = NULL, zerodiag_save, *zerodiag_subs;  in PCBDDCBenignDetectSaddlePoint()  local
2876   PetscCall(MatFindZeroDiagonals(pcbddc->local_mat, &zerodiag));  in PCBDDCBenignDetectSaddlePoint()
2877   PetscCall(ISSorted(zerodiag, &sorted));  in PCBDDCBenignDetectSaddlePoint()
2878   if (!sorted) PetscCall(ISSort(zerodiag));  in PCBDDCBenignDetectSaddlePoint()
2879   PetscCall(PetscObjectReference((PetscObject)zerodiag));  in PCBDDCBenignDetectSaddlePoint()
2880   zerodiag_save = zerodiag;  in PCBDDCBenignDetectSaddlePoint()
2881   PetscCall(ISGetLocalSize(zerodiag, &nz));  in PCBDDCBenignDetectSaddlePoint()
2885     PetscCall(ISDestroy(&zerodiag));  in PCBDDCBenignDetectSaddlePoint()
2921       PetscCall(ISGetLocalSize(zerodiag, &nl));  in PCBDDCBenignDetectSaddlePoint()
2922       PetscCall(ISGetIndices(zerodiag, &idxs));  in PCBDDCBenignDetectSaddlePoint()
2933       PetscCall(ISRestoreIndices(zerodiag, &idxs));  in PCBDDCBenignDetectSaddlePoint()
2941       is    = bsp > 1 ? bzerodiag : &zerodiag;  in PCBDDCBenignDetectSaddlePoint()
3019       if (valid && pressures) PetscCall(ISEqual(pressures, zerodiag, &valid));  in PCBDDCBenignDetectSaddlePoint()
3035         PetscCall(PetscObjectReference((PetscObject)zerodiag));  in PCBDDCBenignDetectSaddlePoint()
3036         zerodiag_subs[0] = zerodiag;  in PCBDDCBenignDetectSaddlePoint()
3046     PetscCall(ISDestroy(&zerodiag));  in PCBDDCBenignDetectSaddlePoint()
3053   if (zerodiag && pressures) PetscCall(ISEqual(pressures, zerodiag, &have_null));  in PCBDDCBenignDetectSaddlePoint()
3056     PetscCall(ISDestroy(&zerodiag));  in PCBDDCBenignDetectSaddlePoint()
3059       zerodiag = zerodiag_subs[0];  in PCBDDCBenignDetectSaddlePoint()
3080       PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nzn, new_idxs, PETSC_OWN_POINTER, &zerodiag));  in PCBDDCBenignDetectSaddlePoint()
3226   *zerodiaglocal = zerodiag;  in PCBDDCBenignDetectSaddlePoint()