diff options
Diffstat (limited to 'test/Sema/format-strings-bitfield-promotion.c')
| -rw-r--r-- | test/Sema/format-strings-bitfield-promotion.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Sema/format-strings-bitfield-promotion.c b/test/Sema/format-strings-bitfield-promotion.c new file mode 100644 index 0000000000..cbe00e7510 --- /dev/null +++ b/test/Sema/format-strings-bitfield-promotion.c @@ -0,0 +1,18 @@ +// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s +// RUN: %clang_cc1 -triple x86_64-unknown-windows-msvc -fsyntax-only -verify %s + +int printf(const char *restrict, ...); + +struct bitfields { + long a : 2; + unsigned long b : 2; + long c : 32; // assumes that int is 32 bits + unsigned long d : 32; // assumes that int is 32 bits +} bf; + +void bitfield_promotion() { + printf("%ld", bf.a); // expected-warning {{format specifies type 'long' but the argument has type 'int'}} + printf("%lu", bf.b); // expected-warning {{format specifies type 'unsigned long' but the argument has type 'int'}} + printf("%ld", bf.c); // expected-warning {{format specifies type 'long' but the argument has type 'int'}} + printf("%lu", bf.d); // expected-warning {{format specifies type 'unsigned long' but the argument has type 'unsigned int'}} +} |