2 files changed, 4 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index dc1eff6..77a9aae 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ ifeq ($(mode), debug)
 		-g \
 		-fsanitize=address
 else 
-	cflags = $(includes) -O2
+	cflags = $(includes) -g -O2
 endif
 
 src = $(shell find ./ -maxdepth 1 -name '*.c' -not -name 'main.c')
diff --git a/interp.c b/interp.c
index 0af16de..dbc790f 100644
--- a/interp.c
+++ b/interp.c
@@ -93,6 +93,9 @@ void Interp_init(Interp *self) {
     SExpVector_push_back(&self->objs, sexp);
     self->nil = (SExpRef){i}; i++;
 
+    self->filename.idx = 0;
+    self->linenum = 1;
+
     sexp.type = kEnvSExp;
     sexp.env.parent= self->nil;
     sexp.env.bindings = self->nil;