(svn r26475) -Fix: potentially undefined shifts in NewGRF code

1 files changed, 2 insertions, 2 deletions

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 4485b717a..b567fc4c9 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6736,7 +6736,7 @@ static void ParamSet(ByteReader *buf)
 			if ((int32)src2 < 0) {
 				res = src1 >> -(int32)src2;
 			} else {
-				res = src1 << src2;
+				res = src1 << (src2 & 0x1F); // Same behaviour as in EvalAdjustT, mask 'value' to 5 bits, which should behave the same on all architectures.
 			}
 			break;
 
@@ -6744,7 +6744,7 @@ static void ParamSet(ByteReader *buf)
 			if ((int32)src2 < 0) {
 				res = (int32)src1 >> -(int32)src2;
 			} else {
-				res = (int32)src1 << src2;
+				res = (int32)src1 << (src2 & 0x1F); // Same behaviour as in EvalAdjustT, mask 'value' to 5 bits, which should behave the same on all architectures.
 			}
 			break;