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100 lines
2.3 KiB
100 lines
2.3 KiB
/*
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* Copyright (c) 2018 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#include <cstdlib>
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void realloc_Good() {
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int* buf1 = (int*)malloc(2 * sizeof(int));
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buf1[0] = 3;
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int* buf2 = (int*)realloc(buf1, 5 * sizeof(int));
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buf2[buf2[0]] = 0;
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}
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void realloc_Bad() {
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int* buf1 = (int*)malloc(2 * sizeof(int));
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buf1[0] = 5;
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int* buf2 = (int*)realloc(buf1, 5 * sizeof(int));
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buf2[buf2[0]] = 0;
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}
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void realloc_Good_FP() {
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int* buf1 = (int*)malloc(2 * sizeof(int));
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for (int i = 0; i < 2; i++) {
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buf1[i] = 3;
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}
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int* buf2 = (int*)realloc(buf1, 5 * sizeof(int));
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buf2[buf2[0]] = 0;
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}
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struct S1 {
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int x[2];
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};
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void realloc_struct1_Good() {
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struct S1* buf1 = (struct S1*)malloc(2 * sizeof(struct S1));
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buf1[0].x[0] = 3;
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struct S1* buf2 = (struct S1*)realloc(buf1, 5 * sizeof(struct S1));
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buf2[buf2[0].x[0]].x[0] = 0;
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}
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void realloc_struct1_Bad() {
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struct S1* buf1 = (struct S1*)malloc(2 * sizeof(struct S1));
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buf1[0].x[0] = 5;
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struct S1* buf2 = (struct S1*)realloc(buf1, 5 * sizeof(struct S1));
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buf2[buf2[0].x[0]].x[0] = 0;
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}
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struct S2 {
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int x;
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};
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struct S3 {
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struct S2 s;
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};
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void realloc_struct2_Good() {
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struct S3* buf1 = (struct S3*)malloc(2 * sizeof(struct S3));
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buf1[0].s.x = 3;
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struct S3* buf2 = (struct S3*)realloc(buf1, 5 * sizeof(struct S3));
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buf2[buf2[0].s.x].s.x = 0;
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}
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void realloc_struct2_Bad() {
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struct S3* buf1 = (struct S3*)malloc(2 * sizeof(struct S3));
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buf1[0].s.x = 5;
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struct S3* buf2 = (struct S3*)realloc(buf1, 5 * sizeof(struct S3));
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buf2[buf2[0].s.x].s.x = 0;
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}
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struct S4 {
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int a[3];
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int c[3];
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int b[1];
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};
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struct S5 {
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public:
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int d[3];
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int f[3];
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S4 e;
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};
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void realloc_flexible_array_Good() {
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struct S5* buf1 = (struct S5*)malloc(sizeof(struct S5) + 4 * sizeof(int));
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struct S5* buf2 =
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(struct S5*)realloc(buf1, sizeof(struct S5) + 9 * sizeof(int));
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buf2->e.b[7] = 0;
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}
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void realloc_flexible_array_Bad() {
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struct S5* buf1 = (struct S5*)malloc(sizeof(struct S5) + 9 * sizeof(int));
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struct S5* buf2 =
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(struct S5*)realloc(buf1, sizeof(struct S5) + 4 * sizeof(int));
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buf2->e.b[7] = 0;
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}
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