X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fjtag%2Ftcl.c;fp=src%2Fjtag%2Ftcl.c;h=c916fb1ca186126b99f3c2566eace86f59664081;hb=20fcd0729e7187e8fe6a38ce53b0a1b95ea647fb;hp=7f08b00fb12eeead51b403eb80341f19091c4854;hpb=2175bb149a01e83e7e0b87ebe82531350c951a61;p=openocd.git

diff --git a/src/jtag/tcl.c b/src/jtag/tcl.c
index 7f08b00fb1..c916fb1ca1 100644
--- a/src/jtag/tcl.c
+++ b/src/jtag/tcl.c
@@ -434,20 +434,15 @@ static int jim_newtap_expected_id(Jim_Nvp *n, Jim_GetOptInfo *goi,
 		return e;
 	}
 
-	unsigned expected_len = sizeof(uint32_t) * pTap->expected_ids_cnt;
-	uint32_t *new_expected_ids = malloc(expected_len + sizeof(uint32_t));
-	if (new_expected_ids == NULL) {
+	uint32_t *p = realloc(pTap->expected_ids,
+			      (pTap->expected_ids_cnt + 1) * sizeof(uint32_t));
+	if (!p) {
 		Jim_SetResultFormatted(goi->interp, "no memory");
 		return JIM_ERR;
 	}
 
-	memcpy(new_expected_ids, pTap->expected_ids, expected_len);
-
-	new_expected_ids[pTap->expected_ids_cnt] = w;
-
-	free(pTap->expected_ids);
-	pTap->expected_ids = new_expected_ids;
-	pTap->expected_ids_cnt++;
+	pTap->expected_ids = p;
+	pTap->expected_ids[pTap->expected_ids_cnt++] = w;
 
 	return JIM_OK;
 }