1 files changed, 2 insertions, 2 deletions
diff --git a/src/runtime/c/pgf/expr.h b/src/runtime/c/pgf/expr.h
index 08200a716..dffe5ac27 100644
--- a/src/runtime/c/pgf/expr.h
+++ b/src/runtime/c/pgf/expr.h
@@ -37,7 +37,7 @@ typedef enum {
 } PgfLiteralTag;
 
 typedef struct {
-	GuString val;
+	char val[0];  // a flexible array that contains the value
 } PgfLiteralStr;
 
 typedef struct {
@@ -102,7 +102,7 @@ typedef struct {
 } PgfExprMeta;
 
 typedef struct {
-	PgfCId fun;
+	char fun[0];
 } PgfExprFun;
 
 typedef struct {