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| author | Hans Wennborg <hans@hanshq.net> | 2012-07-30 17:11:32 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2012-07-30 17:11:32 +0000 |
| commit | cec9ce49dcf4b4b768043f96c8ef8c1d4cdbb6b9 (patch) | |
| tree | 9d721b14c3dc15581ba2acee713216b5f103561c /test/Sema/format-strings-scanf.c | |
| parent | 3ccc173d6f1f9e43566c258289b7581d8aa523ad (diff) | |
Make -Wformat check the argument type for %n.
This makes Clang check that the corresponding argument for "%n" in a
format string is a pointer to int.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160966 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Sema/format-strings-scanf.c')
| -rw-r--r-- | test/Sema/format-strings-scanf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/test/Sema/format-strings-scanf.c b/test/Sema/format-strings-scanf.c index e94af5acb1..2ce94840a6 100644 --- a/test/Sema/format-strings-scanf.c +++ b/test/Sema/format-strings-scanf.c @@ -121,3 +121,8 @@ void test_quad(int *x, long long *llx) { scanf("%qd", x); // expected-warning{{format specifies type 'long long *' but the argument has type 'int *'}} scanf("%qd", llx); // no-warning } + +void test_writeback(int *x) { + scanf("%n", (void*)0); // expected-warning{{format specifies type 'int *' but the argument has type 'void *'}} + scanf("%n %c", x, x); // expected-warning{{format specifies type 'char *' but the argument has type 'int *'}} +} |