expressions: Fix coercion of numbers to booleans at top level.

[pspp] / src / language / expressions / parse.c

diff --git a/src/language/expressions/parse.c b/src/language/expressions/parse.c
index 3124c100a19e4c8922916fcda501ec2c0db058b1..24380e28192f3c22274522db12db8f5d401ea32a 100644 (file)
--- a/src/language/expressions/parse.c
+++ b/src/language/expressions/parse.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 1997-9, 2000, 2006, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1997-9, 2000, 2006, 2010, 2011, 2012 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -262,8 +262,9 @@ type_check (struct expression *e,
                atom_type_name (actual_type));
          return false;
        }
-      if (actual_type == OP_number && expected_type == OP_boolean)
-       *n = expr_allocate_unary (e, OP_NUM_TO_BOOLEAN, *n);
+      if (actual_type == OP_number && expected_type == EXPR_BOOLEAN)
+        *n = expr_allocate_binary (e, OP_NUM_TO_BOOLEAN, *n,
+                                   expr_allocate_string (e, ss_empty ()));
       break;
 
     case EXPR_STRING: