From cc8824ad4e9486b9fa64f1b1d078ff1963f71219 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Tue, 12 Apr 2016 11:51:05 +0100 Subject: [libc] Print "" for wide-character NULL strings The existing code intends to print NULL strings as "" (for the sake of debug messages), but the logic is incorrect when handling wide-character strings. Fix the logic and add applicable unit tests. Signed-off-by: Michael Brown --- src/tests/vsprintf_test.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/tests') diff --git a/src/tests/vsprintf_test.c b/src/tests/vsprintf_test.c index ad732a0d..f388b3de 100644 --- a/src/tests/vsprintf_test.c +++ b/src/tests/vsprintf_test.c @@ -108,6 +108,10 @@ static void vsprintf_test_exec ( void ) { snprintf_ok ( 64, "PCI 00:1f.3", "PCI %02x:%02x.%x", 0x00, 0x1f, 0x03 ); snprintf_ok ( 64, "Region [1000000,3f000000)", "Region [%llx,%llx)", 0x1000000ULL, 0x3f000000ULL ); + + /* Null string (used for debug messages) */ + snprintf_ok ( 16, "", "%s", ( ( char * ) NULL ) ); + snprintf_ok ( 16, "", "%ls", ( ( wchar_t * ) NULL ) ); } /** vsprintf() self-test */ -- cgit v1.2.3-55-g7522