diff options
Diffstat (limited to 'test/Sema/format-strings.c')
| -rw-r--r-- | test/Sema/format-strings.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Sema/format-strings.c b/test/Sema/format-strings.c index 191996004d..e92e17da08 100644 --- a/test/Sema/format-strings.c +++ b/test/Sema/format-strings.c @@ -221,3 +221,16 @@ void test_unicode_conversions(wchar_t *s) { printf("%S", "hello"); // expected-warning{{but the argument has type 'char *'}} } +// Mac OS X supports positional arguments in format strings. +// This is an IEEE extension (IEEE Std 1003.1). +// FIXME: This is probably not portable everywhere. +void test_positional_arguments() { + printf("%0$", (int)2); // expected-warning{{position arguments in format strings start counting at 1 (not 0)}} + printf("%1$d", (int) 2); // no-warning + printf("%1$d", (int) 2, 2); // expected-warning{{data argument not used by format string}} + printf("%1$d%1$f", (int) 2); // expected-warning{{conversion specifies type 'double' but the argument has type 'int'}} + printf("%1$2.2d", (int) 2); // no-warning + printf("%2$*1$.2d", (int) 2, (int) 3); // no-warning + printf("%2$*8$d", (int) 2, (int) 3); // expected-warning{{specified field width is missing a matching 'int' argument}} +} + |