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randstruct: Enable function pointer struct detection

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This enables the automatic structure selection logic in the randstruct
GCC plugin. The selection logic randomizes all structures that contain
only function pointers, unless marked with __no_randomize_layout.

Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook
2017-05-05 23:56:07 -07:00
parent 3598f5d087
commit 9225331b31
2 changed files with 7 additions and 8 deletions
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3
scripts/gcc-plugins/randomize_layout_plugin.c
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@@ -436,9 +436,6 @@ static int is_pure_ops_struct(const_tree node)
gcc_assert(TREE_CODE(node) == RECORD_TYPE || TREE_CODE(node) == UNION_TYPE);
/* XXX: Do not apply randomization to all-ftpr structs yet. */
return 0;
for (field = TYPE_FIELDS(node); field; field = TREE_CHAIN(field)) {
const_tree fieldtype = get_field_type(field);
enum tree_code code = TREE_CODE(fieldtype);