From 9ecbffe11aee736c0a3783358fb2640b0d6f5237 Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Mon, 21 Jun 2010 15:51:04 +0000
Subject: Add a workaround for a MUMG script bug, MUMG now works again.

svn-id: r50117
---
 engines/sci/engine/vm.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'engines')

diff --git a/engines/sci/engine/vm.cpp b/engines/sci/engine/vm.cpp
index 706d2ceb22..7f2ed436e8 100644
--- a/engines/sci/engine/vm.cpp
+++ b/engines/sci/engine/vm.cpp
@@ -161,6 +161,11 @@ static bool validate_variable(reg_t *r, reg_t *stack_base, int type, int max, in
 				error("%s. [VM] Access would be outside even of the stack (%d); access denied", txt.c_str(), total_offset);
 				return false;
 			} else {
+				// WORKAROUND: Mixed-Up Mother Goose tries to use an invalid parameter in Event::new().
+				// Just skip around it here so we don't error out in validate_arithmetic.
+				if (g_sci->getGameId() == "mothergoose" && getSciVersion() <= SCI_VERSION_1_1 && type == VAR_PARAM && index == 1)
+					return false;
+
 				debugC(2, kDebugLevelVM, "%s", txt.c_str());
 				debugC(2, kDebugLevelVM, "[VM] Access within stack boundaries; access granted.");
 				return true;
-- 
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