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annotate gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-char-2.C @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // { dg-do compile }
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2 // { dg-options "-O2 -Wstrict-aliasing" }
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3
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4 template<unsigned _Len, unsigned _Align>
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5 struct aligned_storage
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6 {
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7 union type
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8 {
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9 unsigned char __data[_Len];
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10 struct __attribute__((__aligned__((_Align)))) { } __align;
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11 };
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12 };
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13
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14 aligned_storage<sizeof(int), __alignof__(int)>::type storage;
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15
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16 int main()
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17 {
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18 *reinterpret_cast<int*>(&storage) = 42; // { dg-bogus "break strict-aliasing" }
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19 }