157 lines
4.2 KiB
C++
157 lines
4.2 KiB
C++
// RUN: %clang_cc1 -std=c++11 -Wno-array-bounds -analyze -analyzer-checker=unix,core,alpha.security.ArrayBoundV2 -verify %s
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// Tests doing an out-of-bounds access after the end of an array using:
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// - constant integer index
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// - constant integer size for buffer
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void test1(int x) {
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int *buf = new int[100];
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buf[100] = 1; // expected-warning{{Out of bound memory access}}
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}
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void test1_ok(int x) {
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int *buf = new int[100];
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buf[99] = 1; // no-warning
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}
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// Tests doing an out-of-bounds access after the end of an array using:
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// - indirect pointer to buffer
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// - constant integer index
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// - constant integer size for buffer
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void test1_ptr(int x) {
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int *buf = new int[100];
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int *p = buf;
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p[101] = 1; // expected-warning{{Out of bound memory access}}
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}
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void test1_ptr_ok(int x) {
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int *buf = new int[100];
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int *p = buf;
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p[99] = 1; // no-warning
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}
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// Tests doing an out-of-bounds access before the start of an array using:
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// - indirect pointer to buffer, manipulated using simple pointer arithmetic
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// - constant integer index
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// - constant integer size for buffer
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void test1_ptr_arith(int x) {
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int *buf = new int[100];
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int *p = buf;
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p = p + 100;
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p[0] = 1; // expected-warning{{Out of bound memory access}}
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}
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void test1_ptr_arith_ok(int x) {
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int *buf = new int[100];
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int *p = buf;
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p = p + 99;
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p[0] = 1; // no-warning
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}
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void test1_ptr_arith_bad(int x) {
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int *buf = new int[100];
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int *p = buf;
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p = p + 99;
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p[1] = 1; // expected-warning{{Out of bound memory access}}
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}
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void test1_ptr_arith_ok2(int x) {
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int *buf = new int[100];
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int *p = buf;
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p = p + 99;
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p[-1] = 1; // no-warning
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}
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// Tests doing an out-of-bounds access before the start of an array using:
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// - constant integer index
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// - constant integer size for buffer
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void test2(int x) {
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int *buf = new int[100];
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buf[-1] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests doing an out-of-bounds access before the start of an array using:
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// - indirect pointer to buffer
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// - constant integer index
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// - constant integer size for buffer
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void test2_ptr(int x) {
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int *buf = new int[100];
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int *p = buf;
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p[-1] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests doing an out-of-bounds access before the start of an array using:
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// - indirect pointer to buffer, manipulated using simple pointer arithmetic
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// - constant integer index
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// - constant integer size for buffer
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void test2_ptr_arith(int x) {
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int *buf = new int[100];
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int *p = buf;
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--p;
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p[0] = 1; // expected-warning {{Out of bound memory access (accessed memory precedes memory block)}}
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}
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// Tests under-indexing
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// of a multi-dimensional array
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void test2_multi(int x) {
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auto buf = new int[100][100];
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buf[0][-1] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests under-indexing
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// of a multi-dimensional array
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void test2_multi_b(int x) {
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auto buf = new int[100][100];
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buf[-1][0] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests over-indexing
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// of a multi-dimensional array
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void test2_multi_c(int x) {
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auto buf = new int[100][100];
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buf[100][0] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests over-indexing
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// of a multi-dimensional array
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void test2_multi_2(int x) {
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auto buf = new int[100][100];
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buf[99][100] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests normal access of
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// a multi-dimensional array
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void test2_multi_ok(int x) {
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auto buf = new int[100][100];
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buf[0][0] = 1; // no-warning
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}
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// Tests over-indexing using different types
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// array
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void test_diff_types(int x) {
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int *buf = new int[10]; //10*sizeof(int) Bytes allocated
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char *cptr = (char *)buf;
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cptr[sizeof(int) * 9] = 1; // no-warning
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cptr[sizeof(int) * 10] = 1; // expected-warning{{Out of bound memory access}}
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}
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// Tests over-indexing
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//if the allocated area is non-array
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void test_non_array(int x) {
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int *ip = new int;
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ip[0] = 1; // no-warning
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ip[1] = 2; // expected-warning{{Out of bound memory access}}
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}
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//Tests over-indexing
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//if the allocated area size is a runtime parameter
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void test_dynamic_size(int s) {
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int *buf = new int[s];
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buf[0] = 1; // no-warning
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}
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//Tests complex arithmetic
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//in new expression
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void test_dynamic_size2(unsigned m,unsigned n){
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unsigned *U = nullptr;
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U = new unsigned[m + n + 1];
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}
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