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120 lines
2.3 KiB
120 lines
2.3 KiB
/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <stddef.h>
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void conditional_buffer_access(int* ptr, unsigned int size) {
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int i;
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if (size < 1) {
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} else if (size < 2) {
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i = *(ptr++);
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} else if (size < 3) {
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i = *(ptr++);
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i = *(ptr++);
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} else if (size < 4) {
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i = *(ptr++);
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i = *(ptr++);
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i = *(ptr++);
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} else if (size < 5) {
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i = *(ptr++);
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i = *(ptr++);
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i = *(ptr++);
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i = *(ptr++);
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}
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}
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void call_conditional_buffer_access_Good() {
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int a[1];
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conditional_buffer_access(a, 1);
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}
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void call_conditional_buffer_access_Bad() {
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int a[1];
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conditional_buffer_access(a, 3);
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}
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void conditional_buffer_access2(unsigned int n) {
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int a[n];
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conditional_buffer_access(a, n);
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}
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void call_conditional_buffer_access2_1_Good() { conditional_buffer_access2(1); }
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void call_conditional_buffer_access2_2_Good() { conditional_buffer_access2(3); }
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void conditional_minus(int* ptr, unsigned int size) {
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int i = 0;
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if (ptr != NULL && (i < size - 1)) {
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}
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}
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void call_conditional_minus_1_Good() { conditional_minus(NULL, 0); }
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void call_conditional_minus_2_Good() {
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int a[3];
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conditional_minus(a, 3);
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}
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void call_conditional_minus_2_Bad() {
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int a[3];
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conditional_minus(a, 0);
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}
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unsigned int conditional_minus2(int* ptr, unsigned int size) {
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if (ptr != NULL) {
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return (size - 1);
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}
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}
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void call_conditional_minus2_1_Good() { conditional_minus2(NULL, 0); }
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void call_conditional_minus2_2_Good() {
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int a[3];
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conditional_minus2(a, 3);
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}
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void call_conditional_minus2_2_Bad() {
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int a[3];
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conditional_minus2(a, 0);
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}
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enum E {
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E_SIZEONE = 0,
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E_SIZETWO = 1,
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};
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void conditional_buffer_access3(int* ptr, int size) {
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int i;
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switch (ptr[0]) {
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case E_SIZETWO:
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i = ptr[size - 2];
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i = ptr[size - 1];
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break;
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case E_SIZEONE:
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i = ptr[size - 1];
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break;
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}
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}
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void call_conditional_buffer_access3_1_Good() {
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int a[2];
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a[0] = E_SIZETWO;
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conditional_buffer_access3(a, 2);
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}
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void call_conditional_buffer_access3_2_Good() {
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int a[1];
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a[0] = E_SIZEONE;
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conditional_buffer_access3(a, 1);
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}
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void call_conditional_buffer_access3_Bad() {
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int a[1];
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a[0] = E_SIZETWO;
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conditional_buffer_access3(a, 1);
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}
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