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Diffstat (limited to 'gcc/objc/objc-act.c')
| -rw-r--r-- | gcc/objc/objc-act.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c index 2680fd8..fae535c 100644 --- a/gcc/objc/objc-act.c +++ b/gcc/objc/objc-act.c @@ -1524,6 +1524,14 @@ finish_var_decl (tree var, tree initializer) mark_decl_referenced (var); /* Mark the decl to avoid "defined but not used" warning. */ TREE_USED (var) = 1; + /* We reserve the right for the runtime to use/modify these variables + in ways that are opaque to us. */ + DECL_PRESERVE_P (var) = 1; + /* ipa*.c/cgraphunit.c use lookup attribute rather than testing + DECL_PRESERVE_P. Once they switch to testing DECL_PRESERVE_P, + this can be removed. */ + DECL_ATTRIBUTES (var) = tree_cons (get_identifier ("used"), NULL, + DECL_ATTRIBUTES (var)) ; } /* Find the decl for the constant string class reference. This is only |