| 1 | // RUN: %clang_cc1 -triple i386-apple-darwin9 -x c++ -std=c++11 -verify %s |
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| 2 | // RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c -verify %s |
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| 3 | // RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c++ -verify %s |
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| 4 | |
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| 5 | #ifdef __cplusplus |
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| 6 | # define EXTERN_C extern "C" |
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| 7 | #else |
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| 8 | # define EXTERN_C extern |
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| 9 | #endif |
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| 10 | |
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| 11 | EXTERN_C int printf(const char *,...); |
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| 12 | |
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| 13 | typedef enum : short { Constant = 0 } TestEnum; |
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| 14 | // Note that in C (and Objective-C), the type of 'Constant' is 'short'. |
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| 15 | // In C++ (and Objective-C++) it is 'TestEnum'. |
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| 16 | // This is why we don't check for that in the expected output. |
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| 17 | |
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| 18 | void test(TestEnum input) { |
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| 19 | printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short'}} |
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| 20 | printf("%hhd", Constant); // expected-warning{{format specifies type 'char'}} |
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| 21 | |
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| 22 | printf("%hd", input); // no-warning |
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| 23 | printf("%hd", Constant); // no-warning |
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| 24 | |
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| 25 | // While these are less correct, they are still safe. |
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| 26 | printf("%d", input); // no-warning |
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| 27 | printf("%d", Constant); // no-warning |
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| 28 | |
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| 29 | printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short'}} |
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| 30 | printf("%lld", Constant); // expected-warning{{format specifies type 'long long'}} |
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| 31 | } |
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| 32 | |
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| 33 | |
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| 34 | typedef enum : unsigned long { LongConstant = ~0UL } LongEnum; |
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| 35 | |
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| 36 | void testLong(LongEnum input) { |
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| 37 | printf("%u", input); // expected-warning{{format specifies type 'unsigned int' but the argument has underlying type 'unsigned long'}} |
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| 38 | printf("%u", LongConstant); // expected-warning{{format specifies type 'unsigned int'}} |
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| 39 | |
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| 40 | printf("%lu", input); |
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| 41 | printf("%lu", LongConstant); |
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| 42 | } |
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| 43 | |
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| 44 | |
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| 45 | typedef short short_t; |
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| 46 | typedef enum : short_t { ShortConstant = 0 } ShortEnum; |
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| 47 | |
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| 48 | void testUnderlyingTypedef(ShortEnum input) { |
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| 49 | printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short_t' (aka 'short')}} |
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| 50 | printf("%hhd", ShortConstant); // expected-warning{{format specifies type 'char'}} |
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| 51 | |
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| 52 | printf("%hd", input); // no-warning |
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| 53 | printf("%hd", ShortConstant); // no-warning |
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| 54 | |
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| 55 | // While these are less correct, they are still safe. |
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| 56 | printf("%d", input); // no-warning |
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| 57 | printf("%d", ShortConstant); // no-warning |
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| 58 | |
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| 59 | printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short_t' (aka 'short')}} |
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| 60 | printf("%lld", ShortConstant); // expected-warning{{format specifies type 'long long'}} |
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| 61 | } |
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| 62 | |
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| 63 | |
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| 64 | typedef ShortEnum ShortEnum2; |
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| 65 | |
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| 66 | void testTypedefChain(ShortEnum2 input) { |
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| 67 | printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has underlying type 'short_t' (aka 'short')}} |
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| 68 | printf("%hd", input); // no-warning |
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| 69 | printf("%d", input); // no-warning |
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| 70 | printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'short_t' (aka 'short')}} |
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| 71 | } |
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| 72 | |
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| 73 | |
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| 74 | typedef enum : char { CharConstant = 'a' } CharEnum; |
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| 75 | |
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| 76 | // %hhd is deliberately not required to be signed, because 'char' isn't either. |
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| 77 | // This is a separate code path in FormatString.cpp. |
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| 78 | void testChar(CharEnum input) { |
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| 79 | printf("%hhd", input); // no-warning |
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| 80 | printf("%hhd", CharConstant); // no-warning |
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| 81 | |
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| 82 | // This is not correct but it is safe. We warn because '%hd' shows intent. |
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| 83 | printf("%hd", input); // expected-warning{{format specifies type 'short' but the argument has underlying type 'char'}} |
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| 84 | printf("%hd", CharConstant); // expected-warning{{format specifies type 'short'}} |
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| 85 | |
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| 86 | // This is not correct but it matches the promotion rules (and is safe). |
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| 87 | printf("%d", input); // no-warning |
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| 88 | printf("%d", CharConstant); // no-warning |
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| 89 | |
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| 90 | printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has underlying type 'char'}} |
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| 91 | printf("%lld", CharConstant); // expected-warning{{format specifies type 'long long'}} |
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| 92 | } |
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| 93 | |
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