fix: correctly initialize FunInfo<> object when calling a model field

src/funinfo.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2007-2016, Tomasz Sowa
+ * Copyright (c) 2007-2023, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -201,7 +201,7 @@ struct FunInfo
 	// for other statements than [for] this is always zero
 	size_t iter;
 
-	//
+	// an item from the tree
 	const Item & item;
 
 

src/generator.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2007-2021, Tomasz Sowa
+ * Copyright (c) 2007-2023, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -1652,12 +1652,14 @@ bool Generator<StreamType, is_pikotools_stream, is_autoescape_stream>::CallModel
 	if( parameters.empty() )
 	{
 		FunInfo<StreamType> info(out_stream, parameters, empty, in_stream, stack_tab[stack_index-1], *stack_tab[stack_index-1].item);
+		PrepareEnvStruct(info);
 		found = model.get_raw_value(nullptr, field.c_str(), nullptr, info, str, false);
 		last_res = info.res;
 	}
 	else
 	{
 		FunInfo<StreamType> info(out_stream, parameters, parameters[0].str, in_stream, stack_tab[stack_index-1], *stack_tab[stack_index-1].item);
+		PrepareEnvStruct(info);
 		found = model.get_raw_value(nullptr, field.c_str(), nullptr, info, str, false);
 		last_res = info.res;
 	}