atol_strict.c
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// Test strict_string_checks option in atol function
// RUN: %clang_asan %s -o %t
// RUN: %run %t test1 2>&1
// RUN: %env_asan_opts=strict_string_checks=false %run %t test1 2>&1
// RUN: %env_asan_opts=strict_string_checks=true not %run %t test1 2>&1 | FileCheck %s --check-prefix=CHECK1
// RUN: %run %t test2 2>&1
// RUN: %env_asan_opts=strict_string_checks=false %run %t test2 2>&1
// RUN: %env_asan_opts=strict_string_checks=true not %run %t test2 2>&1 | FileCheck %s --check-prefix=CHECK2
// RUN: %run %t test3 2>&1
// RUN: %env_asan_opts=strict_string_checks=false %run %t test3 2>&1
// RUN: %env_asan_opts=strict_string_checks=true not %run %t test3 2>&1 | FileCheck %s --check-prefix=CHECK3
#include <assert.h>
#include <stdlib.h>
#include <string.h>
void test1(char *array) {
// Last symbol is non-digit
memset(array, '1', 10);
array[9] = 'a';
long r = atol(array);
assert(r == 111111111);
}
void test2(char *array) {
// Single non-digit symbol
array[9] = 'a';
long r = atol(array + 9);
assert(r == 0);
}
void test3(char *array) {
// Incorrect number format
memset(array, ' ', 10);
array[9] = '-';
array[8] = '-';
long r = atol(array);
assert(r == 0);
}
int main(int argc, char **argv) {
char *array = (char*)malloc(10);
if (argc != 2) return 1;
if (!strcmp(argv[1], "test1")) test1(array);
// CHECK1: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
// CHECK1: READ of size 11
if (!strcmp(argv[1], "test2")) test2(array);
// CHECK2: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
// CHECK2: READ of size 2
if (!strcmp(argv[1], "test3")) test3(array);
// CHECK3: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
// CHECK3: READ of size 11
free(array);
return 0;
}