75 lines
1.1 KiB
C
75 lines
1.1 KiB
C
/* { dg-do compile } */
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/* { dg-options "-O1 -fdump-tree-optimized" } */
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/* Tests for SRA of unions. */
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typedef union testunion
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{
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double d;
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char f1;
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} testunion;
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void
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copyunion1 (testunion param)
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{
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testunion local;
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param.f1 = 0;
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local = param;
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if (local.f1 != 0)
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link_error ();
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}
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void
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copyunion11 (testunion *param)
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{
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testunion local;
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param->f1 = 0;
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local = *param;
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if (local.f1 != 0)
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link_error ();
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}
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void
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copyunion111 (testunion param)
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{
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testunion *local = ¶m;
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param.f1 = 0;
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if (local->f1 != 0)
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link_error ();
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}
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testunion globuf;
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void
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copyunion1111 (void)
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{
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testunion local;
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globuf.f1 = 0;
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local = globuf;
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if (local.f1 != 0)
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link_error ();
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}
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void
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copyunion11111 (void)
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{
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testunion *local = &globuf;
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globuf.f1 = 0;
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if (local->f1 != 0)
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link_error ();
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}
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void
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copyunion111111 (testunion param)
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{
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static testunion local;
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param.f1 = 0;
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local = param;
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if (local.f1 != 0)
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link_error ();
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}
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/* There should be no reference to link_error. */
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/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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