30 lines
496 B
C
30 lines
496 B
C
/* { dg-do compile } */
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/* { dg-options "-Wunused -W" } */
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int
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f1 (unsigned int x)
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{
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int c = ({ union { unsigned int a; int b; } u; u.a = x; u.b; });
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return c;
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}
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void
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f2 (void)
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{
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struct S { int i; } a;
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int b[1];
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a.i = 1;
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a.i; /* { dg-warning "no effect" } */
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b[0] = 1;
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b[0]; /* { dg-warning "no effect" } */
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}
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void
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f3 (void)
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{
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struct S { int i; } a; /* { dg-warning "set but not used" } */
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int b[1]; /* { dg-warning "set but not used" } */
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a.i = 1;
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b[0] = 1;
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}
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