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msvcrt: Avoid a NULL pointer deref in ctime.

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This commit is contained in:
Jeff Zaroyko 2008-09-30 15:34:51 +10:00 committed by Alexandre Julliard
parent b77f0a1672
commit 82f77cc17a
2 changed files with 12 additions and 1 deletions
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8
dlls/msvcrt/tests/time.c
View File

@ -31,6 +31,13 @@
#define MINSPERHOUR 60
#define HOURSPERDAY 24
static void test_ctime(void)
{
time_t badtime = -1;
char* ret;
ret = ctime(&badtime);
ok(ret == NULL, "expected ctime to return NULL, got %s\n", ret);
}
static void test_gmtime(void)
{
time_t gmt = (time_t)NULL;
@ -249,6 +256,7 @@ static void test_wstrtime(void)
START_TEST(time)
{
test_ctime();
test_gmtime();
test_mktime();
test_localtime();

5
dlls/msvcrt/time.c
View File

@ -447,7 +447,10 @@ MSVCRT_wchar_t * CDECL MSVCRT__wasctime(const struct MSVCRT_tm *mstm)
*/
char * CDECL MSVCRT_ctime(const MSVCRT_time_t *time)
{
return MSVCRT_asctime( MSVCRT_localtime(time) );
struct MSVCRT_tm *t;
t = MSVCRT_localtime( time );
if (!t) return NULL;
return MSVCRT_asctime( t );
}
/*********************************************************************