listener: line_w must be volatile now.

* parser.c (repl): The line_w variable must be volatile
because it's modified after we save the context for catching
exceptions. Without this, I'm seeing that expressions that
throw an exception are not being entered into the linenoise
history, because the exception catch restores the null initial
value of line_w.

1 files changed, 1 insertions, 1 deletions

diff --git a/parser.c b/parser.c
index 0c90ceff..645b933f 100644
--- a/parser.c
+++ b/parser.c
@@ -1471,7 +1471,7 @@ val repl(val bindings, val in_stream, val out_stream, val env)
                    lino_ctx,
                    lino_ctx = lino_make(coerce(mem_t *, in_stream),
                                         coerce(mem_t *, out_stream)));
-  wchar_t *line_w = 0;
+  wchar_t *volatile line_w = 0;
   val quit_k = intern(lit("quit"), keyword_package);
   val read_k = intern(lit("read"), keyword_package);
   val prompt_k = intern(lit("prompt"), keyword_package);