diff --git a/have_fpos_pos.c b/have_fpos_pos.c
index 56817cf..b53fff8 100644
--- a/have_fpos_pos.c
+++ b/have_fpos_pos.c
@@ -56,8 +56,8 @@ main(void)
 	printf("#define FPOS_POS_BITS %d\n", FPOS_POS_BITS);
 	printf("#define FPOS_POS_LEN %d\n", int(FPOS_POS_BITS/8));
 # else
-	printf("#define FPOS_POS_BITS %d\n", sizeof(pos.__pos)*8);
-	printf("#define FPOS_POS_LEN %d\n", sizeof(pos.__pos));
+	printf("#define FPOS_POS_BITS %lu\n", sizeof(pos.__pos)*8);
+	printf("#define FPOS_POS_LEN %lu\n", sizeof(pos.__pos));
 # endif
 
 #else
diff --git a/zfunc.c b/zfunc.c
index 9988628..61181b6 100644
--- a/zfunc.c
+++ b/zfunc.c
@@ -1034,7 +1034,7 @@ zgcd(ZVALUE z1, ZVALUE z2, ZVALUE *res)
 				}
 				needw = FALSE;
 			}
-			g = *a0 * w;
+			g = (FULL) (*a0 * w);
 			if (h < BASEB) {
 			    g &= (1 << h) - 1;
 			} else {
@@ -1044,7 +1044,7 @@ zgcd(ZVALUE z1, ZVALUE z2, ZVALUE *res)
 			g = 1;
 		}
 	    } else {
-		g = (HALF) *a0 * w;
+		g = (FULL) (*a0 * w);
 	    }
 	    a = a0;
 	    b = b0;