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(finish_struct): If transparent_union attribute specified, validate it

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once we finish laying the union out.

From-SVN: r10293
This commit is contained in:
Richard Kenner 1995-08-29 19:15:47 -04:00
parent 1bcf5b08b0
commit 1604422ce4
1 changed files with 10 additions and 0 deletions
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10
gcc/c-decl.c
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@ -5678,6 +5678,16 @@ finish_struct (t, fieldlist, attributes)
TREE_TYPE (x) = integer_type_node;
}
/* If this was supposed to be a transparent union, but we can't
make it one, warn and turn off the flag. */
if (TREE_CODE (t) == UNION_TYPE
&& TYPE_TRANSPARENT_UNION (t)
&& TYPE_MODE (t) != DECL_MODE (TYPE_FIELDS (t)))
{
TYPE_TRANSPARENT_UNION (t) = 0;
warning ("cannot make `%s' a transparent union");
}
/* If this structure or union completes the type of any previous
variable declaration, lay it out and output its rtl. */