C++ has not "tentative definitions".

[r23222]

diff --git a/parser.c b/parser.c
index 09accea..6fb2c81 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -4774,10 +4774,14 @@ warn_redundant_declaration:
                                        previous_declaration->storage_class          = STORAGE_CLASS_NONE;
                                        previous_declaration->declared_storage_class = STORAGE_CLASS_NONE;
                                } else {
+                                       /* ISO/IEC 14882:1998(E) §C.1.2:1 */
+                                       if (c_mode & _CXX)
+                                               goto error_redeclaration;
                                        goto warn_redundant_declaration;
                                }
                        } else if (is_type_valid(prev_type)) {
                                if (old_storage_class == new_storage_class) {
+error_redeclaration:
                                        errorf(&declaration->source_position,
                                               "redeclaration of '%Y' (declared %P)",
                                               symbol, &previous_declaration->source_position);