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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <assert.h>
#include <cbmc_proof/cbmc_utils.h>
#include <cbmc_proof/make_common_datastructures.h>
#include "api/s2n.h"
#include "utils/s2n_blob.h"
void s2n_realloc_harness()
{
struct s2n_blob *blob = cbmc_allocate_s2n_blob();
__CPROVER_assume(s2n_result_is_ok(s2n_blob_validate(blob)));
uint32_t size;
size_t idx;
__CPROVER_assume(idx < blob->size || (blob->size == 0 && idx == 0));
nondet_s2n_mem_init();
const struct s2n_blob old_blob = *blob;
uint8_t old_data;
if (blob->size > 0) { old_data = blob->data[ idx ]; }
if (s2n_realloc(blob, size) == S2N_SUCCESS) {
assert(s2n_result_is_ok(s2n_blob_validate(blob)));
assert(blob->allocated >= size);
assert(blob->size == size);
if (size >= old_blob.size) {
if (old_blob.size > 0) { assert(blob->data[ idx ] == old_data); }
} else {
if(blob->data) {
assert_all_zeroes(blob->data + blob->size, old_blob.size - blob->size);
}
}
}
}
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