f4a2713ac8
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
92 lines
3.7 KiB
C++
92 lines
3.7 KiB
C++
// RUN: %clang_cc1 -triple i386-apple-darwin9 -x c++ -std=c++11 -verify %s
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// RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c -verify %s
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// RUN: %clang_cc1 -triple i386-apple-darwin9 -x objective-c++ -verify %s
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#ifdef __cplusplus
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# define EXTERN_C extern "C"
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#else
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# define EXTERN_C extern
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#endif
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EXTERN_C int printf(const char *,...);
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typedef enum : short { Constant = 0 } TestEnum;
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// Note that in C (and Objective-C), the type of 'Constant' is 'short'.
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// In C++ (and Objective-C++) it is 'TestEnum'.
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// This is why we don't check for that in the expected output.
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void test(TestEnum input) {
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printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has type 'TestEnum'}}
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printf("%hhd", Constant); // expected-warning{{format specifies type 'char'}}
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printf("%hd", input); // no-warning
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printf("%hd", Constant); // no-warning
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// While these are less correct, they are still safe.
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printf("%d", input); // no-warning
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printf("%d", Constant); // no-warning
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printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has type 'TestEnum'}}
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printf("%lld", Constant); // expected-warning{{format specifies type 'long long'}}
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}
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typedef enum : unsigned long { LongConstant = ~0UL } LongEnum;
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void testLong(LongEnum input) {
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printf("%u", input); // expected-warning{{format specifies type 'unsigned int' but the argument has type 'LongEnum'}}
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printf("%u", LongConstant); // expected-warning{{format specifies type 'unsigned int'}}
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printf("%lu", input);
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printf("%lu", LongConstant);
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}
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typedef short short_t;
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typedef enum : short_t { ShortConstant = 0 } ShortEnum;
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void testUnderlyingTypedef(ShortEnum input) {
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printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has type 'ShortEnum'}}
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printf("%hhd", ShortConstant); // expected-warning{{format specifies type 'char'}}
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printf("%hd", input); // no-warning
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printf("%hd", ShortConstant); // no-warning
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// While these are less correct, they are still safe.
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printf("%d", input); // no-warning
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printf("%d", ShortConstant); // no-warning
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printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has type 'ShortEnum'}}
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printf("%lld", ShortConstant); // expected-warning{{format specifies type 'long long'}}
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}
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typedef ShortEnum ShortEnum2;
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void testTypedefChain(ShortEnum2 input) {
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printf("%hhd", input); // expected-warning{{format specifies type 'char' but the argument has type 'ShortEnum2' (aka 'ShortEnum')}}
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printf("%hd", input); // no-warning
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printf("%d", input); // no-warning
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printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has type 'ShortEnum2' (aka 'ShortEnum')}}
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}
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typedef enum : char { CharConstant = 'a' } CharEnum;
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// %hhd is deliberately not required to be signed, because 'char' isn't either.
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// This is a separate code path in FormatString.cpp.
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void testChar(CharEnum input) {
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printf("%hhd", input); // no-warning
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printf("%hhd", CharConstant); // no-warning
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// This is not correct but it is safe. We warn because '%hd' shows intent.
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printf("%hd", input); // expected-warning{{format specifies type 'short' but the argument has type 'CharEnum'}}
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printf("%hd", CharConstant); // expected-warning{{format specifies type 'short'}}
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// This is not correct but it matches the promotion rules (and is safe).
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printf("%d", input); // no-warning
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printf("%d", CharConstant); // no-warning
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printf("%lld", input); // expected-warning{{format specifies type 'long long' but the argument has type 'CharEnum'}}
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printf("%lld", CharConstant); // expected-warning{{format specifies type 'long long'}}
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}
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