diff options
Diffstat (limited to 'lib/ccan/list/test/run-check-corrupt.c')
-rw-r--r-- | lib/ccan/list/test/run-check-corrupt.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/ccan/list/test/run-check-corrupt.c b/lib/ccan/list/test/run-check-corrupt.c new file mode 100644 index 0000000000..5dd9f9cc83 --- /dev/null +++ b/lib/ccan/list/test/run-check-corrupt.c @@ -0,0 +1,89 @@ +#include <setjmp.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <err.h> + +/* We don't actually want it to exit... */ +static jmp_buf aborted; +#define abort() longjmp(aborted, 1) + +#define fprintf my_fprintf +static char printf_buffer[1000]; + +static int my_fprintf(FILE *stream, const char *format, ...) +{ + va_list ap; + int ret; + va_start(ap, format); + ret = vsprintf(printf_buffer, format, ap); + va_end(ap); + return ret; +} + +#include <ccan/list/list.h> +#include <ccan/tap/tap.h> +#include <ccan/list/list.c> + +int main(int argc, char *argv[]) +{ + struct list_head list; + struct list_node n1; + char expect[100]; + + plan_tests(9); + /* Empty list. */ + list.n.next = &list.n; + list.n.prev = &list.n; + ok1(list_check(&list, NULL) == &list); + + /* Bad back ptr */ + list.n.prev = &n1; + /* Non-aborting version. */ + ok1(list_check(&list, NULL) == NULL); + + /* Aborting version. */ + sprintf(expect, "test message: prev corrupt in node %p (0) of %p\n", + &list, &list); + if (setjmp(aborted) == 0) { + list_check(&list, "test message"); + fail("list_check on empty with bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + /* n1 in list. */ + list.n.next = &n1; + list.n.prev = &n1; + n1.prev = &list.n; + n1.next = &list.n; + ok1(list_check(&list, NULL) == &list); + ok1(list_check_node(&n1, NULL) == &n1); + + /* Bad back ptr */ + n1.prev = &n1; + ok1(list_check(&list, NULL) == NULL); + ok1(list_check_node(&n1, NULL) == NULL); + + /* Aborting version. */ + sprintf(expect, "test message: prev corrupt in node %p (1) of %p\n", + &n1, &list); + if (setjmp(aborted) == 0) { + list_check(&list, "test message"); + fail("list_check on n1 bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + sprintf(expect, "test message: prev corrupt in node %p (0) of %p\n", + &n1, &n1); + if (setjmp(aborted) == 0) { + list_check_node(&n1, "test message"); + fail("list_check_node on n1 bad back ptr didn't fail!"); + } else { + ok1(strcmp(printf_buffer, expect) == 0); + } + + return exit_status(); +} |