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| author | Eric Botcazou <ebotcazou@adacore.com> | 2016-04-02 08:56:19 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2016-04-02 08:56:19 +0000 |
| commit | 7d9979e629a54f0d7e3378c90c7eb1adfd76196e (patch) | |
| tree | 9690b9b585bb4dd9f25f78db7b6a15848333ded1 /gcc/ada/gcc-interface/decl.c | |
| parent | ddd6d4211a152d5f493fc634c210bbadb9ae0217 (diff) | |
| download | gcc-7d9979e629a54f0d7e3378c90c7eb1adfd76196e.zip gcc-7d9979e629a54f0d7e3378c90c7eb1adfd76196e.tar.gz gcc-7d9979e629a54f0d7e3378c90c7eb1adfd76196e.tar.bz2 | |
decl.c (components_to_record): Restrict the previous change to fields with variable size.
* gcc-interface/decl.c (components_to_record): Restrict the previous
change to fields with variable size.
From-SVN: r234696
Diffstat (limited to 'gcc/ada/gcc-interface/decl.c')
| -rw-r--r-- | gcc/ada/gcc-interface/decl.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c index ad84528..87026e7 100644 --- a/gcc/ada/gcc-interface/decl.c +++ b/gcc/ada/gcc-interface/decl.c @@ -7606,13 +7606,15 @@ components_to_record (tree gnu_record_type, Node_Id gnat_component_list, if (p_gnu_rep_list && gnu_rep_list) *p_gnu_rep_list = chainon (*p_gnu_rep_list, gnu_rep_list); - /* If only one field has a rep clause and it starts at 0, put back the field - at the head of the regular field list. This will avoid creating a useless - REP part below and deal with the annoying case of an extension of a record - with variable size and rep clause, for which the _Parent field is forced - at offset 0 and has variable size, which we do not support below. */ + /* Deal with the annoying case of an extension of a record with variable size + and partial rep clause, for which the _Parent field is forced at offset 0 + and has variable size, which we do not support below. Note that we cannot + do it if the field has fixed size because we rely on the presence of the + REP part built below to trigger the reordering of the fields in a derived + record type when all the fields have a fixed position. */ else if (gnu_rep_list && !DECL_CHAIN (gnu_rep_list) + && TREE_CODE (DECL_SIZE (gnu_rep_list)) != INTEGER_CST && !variants_have_rep && first_free_pos && integer_zerop (first_free_pos) |