diff options
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 3dfa042..65966f8 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -6711,6 +6711,19 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p, if (type == error_mark_node) return; + /* Warn about register storage specifiers except when in GNU global + or local register variable extension. */ + if (VAR_P (decl) && DECL_REGISTER (decl) && asmspec_tree == NULL_TREE) + { + if (cxx_dialect >= cxx1z) + pedwarn (DECL_SOURCE_LOCATION (decl), OPT_Wregister, + "ISO C++1z does not allow %<register%> storage " + "class specifier"); + else + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wregister, + "%<register%> storage class specifier used"); + } + /* If a name was specified, get the string. */ if (at_namespace_scope_p ()) asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree); @@ -11634,7 +11647,20 @@ grokdeclarator (const cp_declarator *declarator, and in case doing stupid register allocation. */ if (storage_class == sc_register) - DECL_REGISTER (decl) = 1; + { + DECL_REGISTER (decl) = 1; + /* Warn about register storage specifiers on PARM_DECLs. */ + if (TREE_CODE (decl) == PARM_DECL) + { + if (cxx_dialect >= cxx1z) + pedwarn (DECL_SOURCE_LOCATION (decl), OPT_Wregister, + "ISO C++1z does not allow %<register%> storage " + "class specifier"); + else + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wregister, + "%<register%> storage class specifier used"); + } + } else if (storage_class == sc_extern) DECL_THIS_EXTERN (decl) = 1; else if (storage_class == sc_static) |