1 files changed, 8 insertions, 6 deletions
diff --git a/types.h b/types.h
index 91cda39..bd76826 100644
--- a/types.h
+++ b/types.h
@@ -49,16 +49,18 @@ typedef U32 IdentID; /* identifier ID for cgen (anonymous variables) */
 
 typedef uint32_t LineNo;
 
-typedef struct {
+typedef struct Location {
+	LineNo line;
+	char *code;
+	struct ErrCtx *ctx;
+} Location;
+
+typedef struct ErrCtx {
 	const char *filename;
 	bool enabled;
+	Location *instance_stack; /* stack of locations which generate the instances we're dealing with */
 } ErrCtx;
 
-typedef struct {
-	LineNo line;
-	char *code;
-	ErrCtx *ctx;
-} Location;
 
 typedef struct Page {
 	struct Page *next;