| // RUN: %clang_cc1 -triple i386-apple-darwin9 -x c++ -std=c++11 -verify %s |
| // RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c -verify %s |
| // RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c++ -verify %s |
| |
| #ifdef __cplusplus |
| # define EXTERN_C extern "C" |
| #else |
| # define EXTERN_C extern |
| #endif |
| |
| EXTERN_C int printf(const char *,...); |
| |
| typedef enum : short { Constant = 0 } TestEnum; |
| // Note that in C (and Objective-C), the type of 'Constant' is 'short'. |
| // In C++ (and Objective-C++) it is 'TestEnum'. |
| // This is why we don't check for that in the expected output. |
| |
| void test(TestEnum input) { |
| printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short'}} |
| printf("%hhd", Constant); // expected-warning{{format specifies type 'char'}} |
| |
| printf("%hd", input); // no-warning |
| printf("%hd", Constant); // no-warning |
| |
| // While these are less correct, they are still safe. |
| printf("%d", input); // no-warning |
| printf("%d", Constant); // no-warning |
| |
| printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short'}} |
| printf("%lld", Constant); // expected-warning{{format specifies type 'long long'}} |
| } |
| |
| |
| typedef enum : unsigned long { LongConstant = ~0UL } LongEnum; |
| |
| void testLong(LongEnum input) { |
| printf("%u", input); // expected-warning{{format specifies type 'unsigned int' but the argument has underlying type 'unsigned long'}} |
| printf("%u", LongConstant); // expected-warning{{format specifies type 'unsigned int'}} |
| |
| printf("%lu", input); |
| printf("%lu", LongConstant); |
| } |
| |
| |
| typedef short short_t; |
| typedef enum : short_t { ShortConstant = 0 } ShortEnum; |
| |
| void testUnderlyingTypedef(ShortEnum input) { |
| printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short_t' (aka 'short')}} |
| printf("%hhd", ShortConstant); // expected-warning{{format specifies type 'char'}} |
| |
| printf("%hd", input); // no-warning |
| printf("%hd", ShortConstant); // no-warning |
| |
| // While these are less correct, they are still safe. |
| printf("%d", input); // no-warning |
| printf("%d", ShortConstant); // no-warning |
| |
| printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short_t' (aka 'short')}} |
| printf("%lld", ShortConstant); // expected-warning{{format specifies type 'long long'}} |
| } |
| |
| |
| typedef ShortEnum ShortEnum2; |
| |
| void testTypedefChain(ShortEnum2 input) { |
| printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short_t' (aka 'short')}} |
| printf("%hd", input); // no-warning |
| printf("%d", input); // no-warning |
| printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short_t' (aka 'short')}} |
| } |
| |
| |
| typedef enum : char { CharConstant = 'a' } CharEnum; |
| |
| // %hhd is deliberately not required to be signed, because 'char' isn't either. |
| // This is a separate code path in FormatString.cpp. |
| void testChar(CharEnum input) { |
| printf("%hhd", input); // no-warning |
| printf("%hhd", CharConstant); // no-warning |
| |
| // This is not correct but it is safe. We warn because '%hd' shows intent. |
| printf("%hd", input); // expected-warning{{format specifies type 'short' but the argument has underlying type 'char'}} |
| printf("%hd", CharConstant); // expected-warning{{format specifies type 'short'}} |
| |
| // This is not correct but it matches the promotion rules (and is safe). |
| printf("%d", input); // no-warning |
| printf("%d", CharConstant); // no-warning |
| |
| printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'char'}} |
| printf("%lld", CharConstant); // expected-warning{{format specifies type 'long long'}} |
| } |