forked from OSchip/llvm-project
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
// RUN: %clang_analyze_cc1 -verify %s -std=gnu99 \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=alpha.core \
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// RUN: -analyzer-checker=unix \
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// RUN: -analyzer-checker=alpha.unix
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#include "Inputs/system-header-simulator.h"
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typedef __typeof(sizeof(int)) size_t;
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void *memset(void *__s, int __c, size_t __n);
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void *malloc(size_t __size);
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void free(void *__ptr);
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// The store for 'a[1]' should not be removed mistakenly. SymbolicRegions may
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// also be live roots.
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void f14(int *a) {
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int i;
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a[1] = 1;
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i = a[1];
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if (i != 1) {
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int *p = 0;
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i = *p; // no-warning
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}
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}
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void foo() {
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int *x = malloc(sizeof(int));
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memset(x, 0, sizeof(int));
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int n = 1 / *x; // expected-warning {{Division by zero}}
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free(x);
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}
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void bar() {
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int *x = malloc(sizeof(int));
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memset(x, 0, 1);
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int n = 1 / *x; // no-warning
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free(x);
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}
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void testConcreteNull() {
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int *x = 0;
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memset(x, 0, 1); // expected-warning {{Null pointer argument in call to memory set function}}
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}
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void testStackArray() {
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char buf[13];
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memset(buf, 0, 1); // no-warning
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}
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void testHeapSymbol() {
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char *buf = (char *)malloc(13);
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memset(buf, 0, 1); // no-warning
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free(buf);
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}
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void testStackArrayOutOfBound() {
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char buf[1];
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memset(buf, 0, 1024); // expected-warning {{Memory set function accesses out-of-bound array element}} expected-warning {{'memset' will always overflow; destination buffer has size 1, but size argument is 1024}}
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}
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void testHeapSymbolOutOfBound() {
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char *buf = (char *)malloc(1);
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memset(buf, 0, 1024); // expected-warning {{Memory set function accesses out-of-bound array element}}
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free(buf);
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}
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void testStackArraySameSize() {
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char buf[1];
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memset(buf, 0, sizeof(buf)); // no-warning
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}
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void testHeapSymbolSameSize() {
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char *buf = (char *)malloc(1);
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memset(buf, 0, 1); // no-warning
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free(buf);
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}
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