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CJSON_SetValuestring: better test for overlapping string

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Nicolas Badoux 2024-08-25 23:06:21 +02:00 committed by Alan Wang
parent b47edc4750
commit 4f4d7f70c2
1 changed files with 10 additions and 6 deletions
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16
tests/misc_tests.c
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@ -473,15 +473,19 @@ static void cjson_functions_should_not_crash_with_null_pointers(void)
static void cjson_set_valuestring_should_return_null_if_strings_overlap(void)
{
cJSON *obj, *obj_dup;
cJSON *obj;
char* str;
char* str2;
obj = cJSON_Parse("\"fooz\"");
obj_dup = cJSON_Duplicate(obj, 1);
obj = cJSON_Parse("\"foo0z\"");
str = cJSON_SetValuestring(obj_dup, "beeez");
cJSON_SetValuestring(obj_dup, str);
cJSON_SetValuestring(obj_dup, ++str);
str = cJSON_SetValuestring(obj, "abcde");
str += 1;
/* The string passed to strcpy overlap which is not allowed.*/
str2 = cJSON_SetValuestring(obj, str);
/* If it overlaps, the string will be messed up.*/
TEST_ASSERT_TRUE(strcmp(str, "bcde") == 0);
TEST_ASSERT_NULL(str2);
}
static void *CJSON_CDECL failing_realloc(void *pointer, size_t size)