diff options
Diffstat (limited to 'gcc/cp/decl2.c')
| -rw-r--r-- | gcc/cp/decl2.c | 53 |
1 files changed, 50 insertions, 3 deletions
diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c index 126356d..b6e8e07 100644 --- a/gcc/cp/decl2.c +++ b/gcc/cp/decl2.c @@ -5173,6 +5173,55 @@ maybe_instantiate_decl (tree decl) } } +/* Maybe warn if DECL is deprecated, subject to COMPLAIN. Returns whether or + not a warning was emitted. */ + +bool +cp_warn_deprecated_use (tree decl, tsubst_flags_t complain) +{ + if (!(complain & tf_warning) || !decl + || deprecated_state == DEPRECATED_SUPPRESS) + return false; + + if (!TREE_DEPRECATED (decl)) + { + /* Perhaps this is a deprecated typedef. */ + if (TYPE_P (decl) && TYPE_NAME (decl)) + decl = TYPE_NAME (decl); + + if (!TREE_DEPRECATED (decl)) + return false; + } + + /* Don't warn within members of a deprecated type. */ + if (TYPE_P (decl) + && currently_open_class (decl)) + return false; + + bool warned = false; + if (cxx_dialect >= cxx11 + && DECL_P (decl) + && DECL_ARTIFICIAL (decl) + && DECL_NONSTATIC_MEMBER_FUNCTION_P (decl) + && copy_fn_p (decl)) + { + warned = warning (OPT_Wdeprecated_copy, + "implicitly-declared %qD is deprecated", decl); + if (warned) + { + tree ctx = DECL_CONTEXT (decl); + tree other = classtype_has_user_copy_or_dtor (ctx); + inform (DECL_SOURCE_LOCATION (other), + "because %qT has user-provided %qD", + ctx, other); + } + } + else + warned = warn_deprecated_use (decl, NULL_TREE); + + return warned; +} + /* Mark DECL (either a _DECL or a BASELINK) as "used" in the program. If DECL is a specialization or implicitly declared class member, generate the actual definition. Return false if something goes @@ -5237,9 +5286,7 @@ mark_used (tree decl, tsubst_flags_t complain) return false; } - if (TREE_DEPRECATED (decl) && (complain & tf_warning) - && deprecated_state != DEPRECATED_SUPPRESS) - warn_deprecated_use (decl, NULL_TREE); + cp_warn_deprecated_use (decl, complain); /* We can only check DECL_ODR_USED on variables or functions with DECL_LANG_SPECIFIC set, and these are also the only decls that we |