diff options
Diffstat (limited to 'gcc/c/c-lang.h')
| -rw-r--r-- | gcc/c/c-lang.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/c/c-lang.h b/gcc/c/c-lang.h index 4b93d18..2e99b4d 100644 --- a/gcc/c/c-lang.h +++ b/gcc/c/c-lang.h @@ -35,10 +35,14 @@ struct GTY(()) lang_type { /* In an ENUMERAL_TYPE, the min and max values. */ tree enum_min; tree enum_max; - /* In a RECORD_TYPE, information specific to Objective-C, such - as a list of adopted protocols or a pointer to a corresponding - @interface. See objc/objc-act.h for details. */ - tree objc_info; + union maybe_objc_info { + /* If not c_dialect_objc, this part is not even allocated. */ + char GTY((tag ("0"))) non_objc; + /* In a RECORD_TYPE, information specific to Objective-C, such + as a list of adopted protocols or a pointer to a corresponding + @interface. See objc/objc-act.h for details. */ + tree GTY((tag ("1"))) objc_info; + } GTY ((desc ("c_dialect_objc ()"))) info; }; struct GTY(()) lang_decl { |