92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*
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* Test anonymous structures and unions (C11).
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*/
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#include <stdio.h>
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#include <stddef.h>
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struct S {
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int a;
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union {
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volatile struct {
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long b;
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char c;
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};
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double d;
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};
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} s1 = {1,2,3};
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struct T {
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int a;
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union {
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volatile struct {
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long b;
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char c;
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} s;
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double d;
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} u;
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};
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int main(void) {
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struct S *s1p = &s1;
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if (s1.a != 1)
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goto Fail;
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if (s1.b != 2)
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goto Fail;
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if (s1.c != 3)
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goto Fail;
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s1.d = 123.5;
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if (s1p->d != 123.5)
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goto Fail;
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struct S s2 = {4,5,6};
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struct S *s2p = &s2;
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if (s2.a != 4)
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goto Fail;
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if (s2.b != 5)
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goto Fail;
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if (s2.c != 6)
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goto Fail;
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s2.d = 123.5;
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if (s2p->d != 123.5)
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goto Fail;
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struct S s3 = {.b = 10, 20, .a=30};
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if (s3.a != 30)
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goto Fail;
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if (s3.b != 10)
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goto Fail;
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if (s3.c != 20)
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goto Fail;
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struct S s4 = {.a=30, 10, 20.5, .d = 123.5};
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if (s4.a != 30)
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goto Fail;
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if (s4.d != 123.5)
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goto Fail;
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if (sizeof(struct S) != sizeof(struct T))
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goto Fail;
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if (offsetof(struct S, a) != offsetof(struct T, a))
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goto Fail;
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if (offsetof(struct S, b) != offsetof(struct T, u.s.b))
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goto Fail;
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if (offsetof(struct S, c) != offsetof(struct T, u.s.c))
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goto Fail;
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if (offsetof(struct S, d) != offsetof(struct T, u.d))
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goto Fail;
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printf ("Passed Conformance Test c11anonsu\n");
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return 0;
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Fail:
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printf ("Failed Conformance Test c11anonsu\n");
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}
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