Add test case for #407

1 files changed, 2 insertions, 0 deletions

diff --git a/pb.h b/pb.h
index 871422d..bd95920 100644
--- a/pb.h
+++ b/pb.h
@@ -434,6 +434,8 @@ struct pb_extension_s {
     bool found;
 };
 
+#define pb_extension_init_zero {NULL,NULL,NULL,false}
+
 /* Memory allocation functions to use. You can define pb_realloc and
  * pb_free to custom functions if you want. */
 #ifdef PB_ENABLE_MALLOC