X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=parser.c;h=38dffce2be24cabf55fb63ab4332335f0909e5c7;hb=f4ccc7ee5551bda618bc55fa511ba43078826cf9;hp=0f2dd11ef9ae7aeff4c283a7ce39244f4efaffd8;hpb=45002a9bc0d85c57215aabd153e8a95825ece7d2;p=cparser

diff --git a/parser.c b/parser.c
index 0f2dd11..38dffce 100644
--- a/parser.c
+++ b/parser.c
@@ -4114,7 +4114,7 @@ static declaration_t *internal_record_declaration(
 	const symbol_t *const symbol  = declaration->symbol;
 	const namespace_t     namespc = (namespace_t)declaration->namespc;
 
-	assert(declaration->symbol != NULL);
+	assert(symbol != NULL);
 	declaration_t *previous_declaration = get_declaration(symbol, namespc);
 
 	type_t *const orig_type = declaration->type;
@@ -4132,6 +4132,13 @@ static declaration_t *internal_record_declaration(
 		check_type_of_main(declaration, &type->function);
 	}
 
+	if (warning.nested_externs                             &&
+	    declaration->storage_class == STORAGE_CLASS_EXTERN &&
+	    scope                      != global_scope) {
+		warningf(&declaration->source_position,
+		         "nested extern declaration of '%#T'", declaration->type, symbol);
+	}
+
 	assert(declaration != previous_declaration);
 	if (previous_declaration != NULL
 			&& previous_declaration->parent_scope == scope) {