Compile warnings fixed.

test/solidityCompiler.cpp

@@ -107,7 +107,7 @@ BOOST_AUTO_TEST_CASE(different_argument_numbers)
 					   byte(Instruction::DUP3),
 					   byte(Instruction::SWAP1), // assign b to d
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0xa + shift, // jump to return
+					   byte(Instruction::PUSH1), byte(0xa + shift), // jump to return
 					   byte(Instruction::JUMP),
 					   byte(Instruction::JUMPDEST),
 					   byte(Instruction::SWAP4), // store d and fetch return address
@@ -119,11 +119,11 @@ BOOST_AUTO_TEST_CASE(different_argument_numbers)
 					   byte(Instruction::JUMPDEST), // beginning of g
 					   byte(Instruction::PUSH1), 0x0,
 					   byte(Instruction::DUP1), // initialized e and h
-					   byte(Instruction::PUSH1), 0x20 + shift, // ret address
+					   byte(Instruction::PUSH1), byte(0x20 + shift), // ret address
 					   byte(Instruction::PUSH1), 0x1,
 					   byte(Instruction::PUSH1), 0x2,
 					   byte(Instruction::PUSH1), 0x3,
-					   byte(Instruction::PUSH1), 0x1 + shift,
+					   byte(Instruction::PUSH1), byte(0x1 + shift),
 					   // stack here: ret e h 0x20 1 2 3 0x1
 					   byte(Instruction::JUMP),
 					   byte(Instruction::JUMPDEST),
@@ -158,24 +158,24 @@ BOOST_AUTO_TEST_CASE(ifStatement)
 	bytes expectation({byte(Instruction::JUMPDEST),
 					   byte(Instruction::PUSH1), 0x0,
 					   byte(Instruction::DUP1),
-					   byte(Instruction::PUSH1), 0x1b + shift, // "true" target
+					   byte(Instruction::PUSH1), byte(0x1b + shift), // "true" target
 					   byte(Instruction::JUMPI),
 					   // new check "else if" condition
 					   byte(Instruction::DUP1),
 					   byte(Instruction::ISZERO),
-					   byte(Instruction::PUSH1), 0x13 + shift,
+					   byte(Instruction::PUSH1), byte(0x13 + shift),
 					   byte(Instruction::JUMPI),
 					   // "else" body
 					   byte(Instruction::PUSH1), 0x4f,
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0x17 + shift, // exit path of second part
+					   byte(Instruction::PUSH1), byte(0x17 + shift), // exit path of second part
 					   byte(Instruction::JUMP),
 					   // "else if" body
 					   byte(Instruction::JUMPDEST),
 					   byte(Instruction::PUSH1), 0x4e,
 					   byte(Instruction::POP),
 					   byte(Instruction::JUMPDEST),
-					   byte(Instruction::PUSH1), 0x1f + shift,
+					   byte(Instruction::PUSH1), byte(0x1f + shift),
 					   byte(Instruction::JUMP),
 					   // "if" body
 					   byte(Instruction::JUMPDEST),
@@ -201,23 +201,23 @@ BOOST_AUTO_TEST_CASE(loops)
 					   byte(Instruction::JUMPDEST),
 					   byte(Instruction::PUSH1), 0x1,
 					   byte(Instruction::ISZERO),
-					   byte(Instruction::PUSH1), 0x21 + shift,
+					   byte(Instruction::PUSH1), byte(0x21 + shift),
 					   byte(Instruction::JUMPI),
 					   byte(Instruction::PUSH1), 0x1,
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0x21 + shift,
+					   byte(Instruction::PUSH1), byte(0x21 + shift),
 					   byte(Instruction::JUMP), // break
 					   byte(Instruction::PUSH1), 0x2,
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0x2 + shift,
+					   byte(Instruction::PUSH1), byte(0x2 + shift),
 					   byte(Instruction::JUMP), // continue
 					   byte(Instruction::PUSH1), 0x3,
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0x22 + shift,
+					   byte(Instruction::PUSH1), byte(0x22 + shift),
 					   byte(Instruction::JUMP), // return
 					   byte(Instruction::PUSH1), 0x4,
 					   byte(Instruction::POP),
-					   byte(Instruction::PUSH1), 0x2 + shift,
+					   byte(Instruction::PUSH1), byte(0x2 + shift),
 					   byte(Instruction::JUMP),
 					   byte(Instruction::JUMPDEST),
 					   byte(Instruction::JUMPDEST),