handling io.open() errors in weaver sample

diff --git a/src/samples/weaver.mlua b/src/samples/weaver.mlua
index 202d00326311e335c4745d394695256f236f1e5d..3820e06ebaed17ae0c11568b6908a7470e07033d 100644 (file)
--- a/src/samples/weaver.mlua
+++ b/src/samples/weaver.mlua
@@ -82,7 +82,7 @@ end
 
 -- Get the source. If none is given, use itself as an example. --
 local filename = arg[2] or arg[1] or arg[0]
-local f = io.open (filename, 'r')
+local f = assert (io.open (filename, 'r'))
 local src = f:read '*a'
 f:close()