parser, eval: use an ut_op flag to denote postfix access

The current code still abused the JSON value pointer to denote postfix
access for certain operations which led to a crash when freeing the
parser state due to an attempt to put a (void *)1 pointer.

Since we do have the ability to set flags on operations since the AST
rework, use this much cleaner approach and avoid the invalid pointer
hackery.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/ast.h b/ast.h
index b45ee41..9bb6696 100644
--- a/ast.h
+++ b/ast.h
@@ -55,6 +55,7 @@ struct ut_op {
 	uint16_t is_first:1;
 	uint16_t is_op:1;
 	uint16_t is_overflow:1;
+	uint16_t is_postfix:1;
 	uint32_t off;
 	struct json_object *val;
 	union {