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111
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1 /* { dg-do compile } */
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131
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2 /* { dg-options "-O2 -fno-store-merging" } */
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145
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3 /* { dg-additional-options "-fno-common -mdynamic-no-pic" { target { ia32 && { x86_64-*-darwin* i?86-*-darwin* } } } } */
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111
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4
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5 struct B {
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6 B() {}
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7 int x;
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8 int a : 6;
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9 int b : 6;
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10 int c : 6;
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11 };
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12
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13 struct C : B {
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14 char d;
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15 };
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16
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17 C c;
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18
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19 int main()
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20 {
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21 /* We have to make sure to not cause a store data race between
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22 c.c and c.d residing in the tail padding of B. */
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23 c.c = 1;
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24 c.d = 2;
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25 }
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26
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27 /* In particular on x86 c.d should not be loaded/stored via movl. */
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28 /* { dg-final { scan-assembler-not "movl" { target { x86_64-*-* i?86-*-* } } } } */
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