commit e4a6f5a7ecceb603cfdc7a2be99693f0bd0aa1eb
author Dave Rodgman <dave.rodgman@arm.com> Sat Nov 04 12:20:09 2023 +0000
committer Dave Rodgman <dave.rodgman@arm.com> Tue Nov 21 17:09:46 2023 +0000
tree f2f66f8a9f8434869c3d9d3f71f283d083f64264
parent effdfe74097b96a02ec3316f1e52e7785fb61b5d

Use size_t cast for pointer subtractions

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

library/lms.c

diff --git a/library/lms.c b/library/lms.c
index 0c470a0..00525bb 100644
--- a/library/lms.c
+++ b/library/lms.c
@@ -505,7 +505,7 @@
     unsigned int height;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    tree = mbedtls_calloc(MERKLE_TREE_NODE_AM(ctx->params.type),
+    tree = mbedtls_calloc((size_t) MERKLE_TREE_NODE_AM(ctx->params.type),
                           node_bytes);
     if (tree == NULL) {
         return MBEDTLS_ERR_LMS_ALLOC_FAILED;
@@ -530,7 +530,7 @@
 
 exit:
     mbedtls_zeroize_and_free(tree, node_bytes *
-                             MERKLE_TREE_NODE_AM(ctx->params.type));
+                             (size_t) MERKLE_TREE_NODE_AM(ctx->params.type));
 
     return ret;
 }
@@ -669,7 +669,7 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    tree = mbedtls_calloc(MERKLE_TREE_NODE_AM(priv_ctx->params.type),
+    tree = mbedtls_calloc((size_t) MERKLE_TREE_NODE_AM(priv_ctx->params.type),
                           node_bytes);
     if (tree == NULL) {
         return MBEDTLS_ERR_LMS_ALLOC_FAILED;
@@ -692,7 +692,7 @@
 
 exit:
     mbedtls_zeroize_and_free(tree, node_bytes *
-                             MERKLE_TREE_NODE_AM(priv_ctx->params.type));
+                             (size_t) MERKLE_TREE_NODE_AM(priv_ctx->params.type));
 
     return ret;
 }