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(c_build_type_variant): Remove last change; instead, copy TYPE if not

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in old obstack.

From-SVN: r7618
This commit is contained in:
Richard Kenner 1994-06-30 06:24:28 -04:00
parent 14e7bf7c23
commit 084b6d7b05
1 changed files with 16 additions and 6 deletions
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22
gcc/c-common.c
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@ -1972,16 +1972,26 @@ c_build_type_variant (type, constp, volatilep)
{
if (TREE_CODE (type) == ARRAY_TYPE)
{
push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
tree real_main_variant = TYPE_MAIN_VARIANT (type);
push_obstacks (TYPE_OBSTACK (real_main_variant),
TYPE_OBSTACK (real_main_variant));
type = build_array_type (c_build_type_variant (TREE_TYPE (type),
constp, volatilep),
TYPE_DOMAIN (type));
pop_obstacks ();
/* If the old TYPE had variants, we lose them here. However,
since the new TYPE can be in the permanent obstack and the
old one may not be, preserving this chain would cause permanent
objects to point to non-permanent ones. */
/* TYPE must be on same obstack as REAL_MAIN_VARIANT. If not,
make a copy. (TYPE might have come from the hash table and
REAL_MAIN_VARIANT might be in some function's obstack.) */
if (TYPE_OBSTACK (type) != TYPE_OBSTACK (real_main_variant))
{
type = copy_node (type);
TYPE_POINTER_TO (type) = TYPE_REFERENCE_TO (type) = 0;
}
TYPE_MAIN_VARIANT (type) = real_main_variant;
pop_obstacks ();
}
return build_type_variant (type, constp, volatilep);
}