50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=x86_64-apple-darwin10
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#define CHECK_SIZE(name, size) extern int name##1[sizeof(name) == size ? 1 : -1];
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#define CHECK_ALIGN(name, size) extern int name##2[__alignof(name) == size ? 1 : -1];
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// Simple tests.
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struct Test1 {
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char c : 9; // expected-warning {{width of bit-field 'c' (9 bits) exceeds the width of its type; value will be truncated to 8 bits}}
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};
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CHECK_SIZE(Test1, 2);
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CHECK_ALIGN(Test1, 1);
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struct Test1a {
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char : 9; // no warning (there's no value to truncate here)
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};
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CHECK_SIZE(Test1a, 2);
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CHECK_ALIGN(Test1a, 1);
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struct Test2 {
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char c : 16; // expected-warning {{width of bit-field 'c' (16 bits) exceeds the width of its type; value will be truncated to 8 bits}}
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};
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CHECK_SIZE(Test2, 2);
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CHECK_ALIGN(Test2, 2);
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struct Test3 {
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char c : 32; // expected-warning {{width of bit-field 'c' (32 bits) exceeds the width of its type; value will be truncated to 8 bits}}
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};
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CHECK_SIZE(Test3, 4);
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CHECK_ALIGN(Test3, 4);
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struct Test4 {
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char c : 64; // expected-warning {{width of bit-field 'c' (64 bits) exceeds the width of its type; value will be truncated to 8 bits}}
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};
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CHECK_SIZE(Test4, 8);
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CHECK_ALIGN(Test4, 8);
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struct Test5 {
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char c : 0x100000001; // expected-warning {{width of bit-field 'c' (4294967297 bits) exceeds the width of its type; value will be truncated to 8 bits}}
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};
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// Size and align don't really matter here, just make sure we don't crash.
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CHECK_SIZE(Test5, 1);
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CHECK_ALIGN(Test5, 1);
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struct Test6 {
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char c : (unsigned __int128)0xffffffffffffffff + 2; // expected-error {{bit-field 'c' is too wide (18446744073709551617 bits)}}
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};
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// Size and align don't really matter here, just make sure we don't crash.
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CHECK_SIZE(Test6, 1);
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CHECK_ALIGN(Test6, 1);
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