diff options
Diffstat (limited to 'gcc/c')
| -rw-r--r-- | gcc/c/c-decl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 53b2b5b..3c7b306 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -8853,6 +8853,13 @@ finish_struct (location_t loc, tree t, tree fieldlist, tree attributes, = c_build_qualified_type (fmain_type, TYPE_QUALS (ftype)); } } + + if (TREE_CODE (t) == UNION_TYPE + && AGGREGATE_TYPE_P (TREE_TYPE (field)) + && TYPE_REVERSE_STORAGE_ORDER (t) + != TYPE_REVERSE_STORAGE_ORDER (TREE_TYPE (field))) + warning_at (DECL_SOURCE_LOCATION (field), OPT_Wscalar_storage_order, + "type punning toggles scalar storage order"); } /* Now we have the truly final field list. |