diff --git a/LAGraph/src/algorithm/LG_CC_FastSV6.c b/LAGraph/src/algorithm/LG_CC_FastSV6.c
index 6595fe2ee..24b900141 100644
--- a/LAGraph/src/algorithm/LG_CC_FastSV6.c
+++ b/LAGraph/src/algorithm/LG_CC_FastSV6.c
@@ -556,7 +556,6 @@ int LG_CC_FastSV6           // SuiteSparse:GraphBLAS method, with GxB extensions
         bool T_jumbled, T_iso ;
         GRB_TRY (GxB_Matrix_unpack_CSR (T, &Tp, &Tj, &Tx, &Tp_size, &Tj_size,
             &Tx_size, &T_iso, &T_jumbled, NULL)) ;
-// printf ("did unpack T\n") ; fflush (stdout) ; fflush (stderr) ;
         #pragma omp parallel for num_threads(nthreads) schedule(static)
         for (tid = 0 ; tid < nthreads ; tid++)
         {
@@ -601,33 +600,15 @@ int LG_CC_FastSV6           // SuiteSparse:GraphBLAS method, with GxB extensions
             count [tid] = p - Tp [range [tid]] ;
         }
 
-// printf ("did prune T\n") ; fflush (stdout) ; fflush (stderr) ;
-
         // Compact empty space out of Tj not filled in from the above phase.
         nvals = 0 ;
         for (tid = 0 ; tid < nthreads ; tid++)
         {
-            // `memcpy` is not safe if src/dest are overlapping.
-            // Use `memmove` (or if available `memmove_s`) instead.
-
-//          #if defined (__STDC_LIB_EXT1__)
-//          memmove_s (Tj + nvals, Tj_size - sizeof (GrB_Index) * nvals,
-//              Tj + Tp [range [tid]], sizeof (GrB_Index) * count [tid]) ;
-//          #else
-
-            // memmove is safe:  src/dest can overlap, but the copy will not go
-            // outside of the array, and Tj is never NULL at this point
-            // (GRB_TRY on the GxB_Matrix_unpack_CSR above would catch that
-            // condition).  So memmove_s isn't necessary.
             memmove (Tj + nvals,
                 Tj + Tp [range [tid]], sizeof (GrB_Index) * count [tid]) ;
-
-//          #endif
-
             nvals += count [tid] ;
             count [tid] = nvals - count [tid] ;
         }
-// printf ("did compact T\n") ; fflush (stdout) ; fflush (stderr) ;
 
         // Compact empty space out of Tp
         #pragma omp parallel for num_threads(nthreads) schedule(static)
@@ -640,8 +621,6 @@ int LG_CC_FastSV6           // SuiteSparse:GraphBLAS method, with GxB extensions
             }
         }
 
-// printf ("did 2nd compact T\n") ; fflush (stdout) ; fflush (stderr) ;
-
         // finalize T
         Tp [n] = nvals ;
 
@@ -649,14 +628,10 @@ int LG_CC_FastSV6           // SuiteSparse:GraphBLAS method, with GxB extensions
         GRB_TRY (GxB_Matrix_pack_CSR (T, &Tp, &Tj, &Tx, Tp_size, Tj_size,
             Tx_size, T_iso, /* T is now jumbled */ true, NULL)) ;
 
-// printf ("did pack T\n") ; fflush (stdout) ; fflush (stderr) ;
-
         // pack A (unchanged since last unpack); this is the original G->A.
         GRB_TRY (GxB_Matrix_pack_CSR (A, &Ap, &Aj, &Ax, Ap_size, Aj_size,
             Ax_size, A_iso, A_jumbled, NULL)) ;
 
-// printf ("did pack A\n") ; fflush (stdout) ; fflush (stderr) ;
-
 // ].  The unpack/pack of A into Ap, Aj, Ax will not be needed, and G->A
 // will become truly a read-only matrix.