48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/* { dg-do run } */
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/* { dg-options "-O2" } */
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/* { dg-require-effective-target int32plus } */
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struct tree_decl
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{
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union tree_decl_u1 {
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int f;
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long i;
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struct tree_decl_u1_a {
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unsigned int align : 24;
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unsigned int off_align : 8;
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} a;
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} u1;
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};
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extern void abort (void);
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unsigned int
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assemble_variable (struct tree_decl decl)
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{
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unsigned int align;
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align = decl.u1.a.align;
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if (align > (1 << ((8 * 4) < 64 ? (8 * 4) - 2 : 62)))
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align = (1 << ((8 * 4) < 64 ? (8 * 4) - 2 : 62));
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/* VRP should not be propagating 0 to the RHS of this assignment.
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But it was erroneously applying a cast operation between types of
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different precision. align is an unsigned int with range [0,
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0x4000000] but the .align field holds only 24 bits. So the cast
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was returning a [0, 0] range. */
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decl.u1.a.align = align;
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return decl.u1.a.align;
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}
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main ()
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{
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struct tree_decl decl;
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decl.u1.a.align = 13;
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unsigned int x = assemble_variable (decl);
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if (x == 0)
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abort ();
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return 0;
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}
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