From ad9b8586e9f701ea59c426420ebccadb88ecc8c9 Mon Sep 17 00:00:00 2001
From: Alexander Batalov <alex.batalov@gmail.com>
Date: Tue, 25 Oct 2022 09:57:13 +0300
Subject: [PATCH] Fix testing pointers for nulls in Nevada

Closes #178
---
 src/interpreter.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/interpreter.cc b/src/interpreter.cc
index c24b0e3..c196823 100644
--- a/src/interpreter.cc
+++ b/src/interpreter.cc
@@ -1127,6 +1127,16 @@ static void opConditionalOperatorLessThanEquals(Program* program)
             assert(false && "Should be unreachable");
         }
         break;
+    // Nevada folks tend to use "object <= 0" to test objects for nulls.
+    case VALUE_TYPE_PTR:
+        switch (value[0].opcode) {
+        case VALUE_TYPE_INT:
+            result = (intptr_t)value[1].pointerValue <= (intptr_t)value[0].integerValue;
+            break;
+        default:
+            assert(false && "Should be unreachable");
+        }
+        break;
     default:
         assert(false && "Should be unreachable");
     }