Do not warn about no prior declaration for extern declarations.

[r18752]

diff --git a/parser.c b/parser.c
index 6acf52b..35ebcb6 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -2352,6 +2352,7 @@ warn_redundant_declaration:
                }
        } else if (warning.missing_declarations &&
            context == global_context &&
+           declaration->storage_class != STORAGE_CLASS_EXTERN &&
            declaration->storage_class != STORAGE_CLASS_STATIC &&
            declaration->storage_class != STORAGE_CLASS_TYPEDEF &&
            declaration->storage_class != STORAGE_CLASS_ENUM_ENTRY &&