Fix source for function4.decaf; it now passes.

Function4.decaf contained a syntax error; it had a function with the return type `int` that never returned an integer. I changed the return type to `void` and it now compiles.

src/test/resources/lab4-samples/function4.decaf

@@ -26,7 +26,7 @@ int two(int c, bool b)
 		return c/d;
 }
 
-int three(int a)
+void three(int a)
 {
 	int b;
 	int c;

src/test/resources/lab4-samples/passed/function4.j

@@ -0,0 +1,267 @@
+.source function4.decaf
+.class public function4
+.super java/lang/Object
+;
+; standard initializer (calls java.lang.Object's initializer)
+;
+.method public <init>()V
+aload_0
+invokenonvirtual java/lang/Object/<init>()V
+return
+.end method
+.method public static readInt()I
+	.limit stack 5
+	.limit locals 1
+	.line 4
+ReadIntBegin:
+	new	java/io/BufferedReader
+	dup
+	new	java/io/InputStreamReader
+	dup
+	getstatic	java/lang/System/in Ljava/io/InputStream;
+	invokespecial	java/io/InputStreamReader/<init>(Ljava/io/InputStream;)V
+	invokespecial	java/io/BufferedReader/<init>(Ljava/io/Reader;)V
+	invokevirtual	java/io/BufferedReader/readLine()Ljava/lang/String;
+	invokestatic	java/lang/Integer/parseInt(Ljava/lang/String;)I
+ReadIntReturn:
+	ireturn
+ReadIntCatch:
+	astore_0
+	iconst_0
+	ireturn
+.catch java/lang/Exception from ReadIntBegin to ReadIntReturn using ReadIntCatch
+.end method
+
+.method public static readLine()Ljava/lang/String;
+	.limit stack 5
+.limit locals 1
+ReadLineBegin:
+	new java/io/BufferedReader
+	dup
+	new	java/io/InputStreamReader
+	dup
+	getstatic	java/lang/System/in Ljava/io/InputStream;
+	invokespecial	java/io/InputStreamReader/<init>(Ljava/io/InputStream;)V
+	invokespecial	java/io/BufferedReader/<init>(Ljava/io/Reader;)V
+	invokevirtual	java/io/BufferedReader/readLine()Ljava/lang/String;
+ReadLineReturn:
+	areturn
+ReadLineCatch:
+	astore_0
+	ldc	"Fail"
+	areturn
+.catch	java/lang/Exception from ReadLineBegin to ReadLineReturn using ReadLineCatch
+.end method  
+
+.method public static SayHi()V
+
+.limit locals 1
+.limit stack 5
+BeginGlobal:
+.var 0 is c I from BeginGlobal to EndGlobal
+	ldc	0xF
+	istore	0
+
+	.line 5
+		ldc	0x0
+		ldc	0x1
+		if_icmpne	IfNot1169612028
+	.line 6
+		.line 6
+		return
+	IfNot1169612028:
+
+		iload	0
+			iload	0
+			iload	0
+			imul
+		isub
+	istore	0
+
+	.line 8
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+			ldc	0x2
+			iload	0
+			imul
+		invokevirtual	java/io/PrintStream/print(I)V
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		iload	0
+		invokevirtual	java/io/PrintStream/print(I)V
+
+
+EndGlobal:
+return
+.end method
+.method public static one(II)I
+
+.limit locals 2
+.limit stack 5
+.var 0 is a I from BeginGlobal to EndGlobal
+.var 1 is b I from BeginGlobal to EndGlobal
+BeginGlobal:
+	.line 12
+	invokestatic function4/SayHi()V
+
+				iload	0
+				ldc	0x1
+				isub
+			iload	1
+			imul
+		ldc	0x1
+		iadd
+	ireturn
+
+EndGlobal:
+.end method
+.method public static two(IZ)I
+
+.limit locals 3
+.limit stack 5
+.var 0 is c I from BeginGlobal to EndGlobal
+.var 1 is b Z from BeginGlobal to EndGlobal
+BeginGlobal:
+.var 2 is d I from BeginGlobal to EndGlobal
+	.line 19
+	iload	0
+	ldc	0x3
+	invokestatic function4/one(II)I
+	istore	0
+
+	.line 20
+	ldc	0x4
+	ldc	0x5
+	invokestatic function4/one(II)I
+	istore	2
+
+	.line 21
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		iload	0
+		invokevirtual	java/io/PrintStream/print(I)V
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		iload	2
+		invokevirtual	java/io/PrintStream/print(I)V
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		ldc	"\n"
+		invokevirtual	java/io/PrintStream/print(Ljava/lang/String;)V
+
+
+		iload	0
+		iload	2
+		if_icmplt	CmpLT1293297651
+		ldc	0x0
+		goto	CmpLTDone1293297651
+	CmpLT1293297651:
+		ldc	0x1
+	CmpLTDone1293297651:
+	istore	1
+
+	.line 23
+		iload	1
+		ldc	0x1
+		if_icmpeq	If1840569843
+		goto	IfElse1840569843
+	If1840569843:
+	.line 24
+			iload	0
+			iload	2
+			imul
+		ireturn
+	IfElse1840569843:
+	.line 26
+			iload	0
+			iload	2
+			idiv
+		ireturn
+	IfDone1840569843:
+
+EndGlobal:
+.end method
+.method public static three(I)V
+
+.limit locals 3
+.limit stack 5
+.var 0 is a I from BeginGlobal to EndGlobal
+BeginGlobal:
+.var 1 is b I from BeginGlobal to EndGlobal
+
+.var 2 is c I from BeginGlobal to EndGlobal
+		ldc	0x3
+		iload	0
+		imul
+	istore	1
+
+	.line 35
+	iload	1
+		iload	1
+		ldc	0x3
+		if_icmpeq	CmpEQ469216171
+		ldc	0x0
+		goto	CmpEQDone469216171
+	CmpEQ469216171:
+		ldc	0x1
+	CmpEQDone469216171:
+	invokestatic function4/two(IZ)I
+	istore	2
+
+	.line 36
+	iload	2
+		iload	1
+		ldc	0x3
+		if_icmpeq	CmpEQ775344959
+		ldc	0x0
+		goto	CmpEQDone775344959
+	CmpEQ775344959:
+		ldc	0x1
+	CmpEQDone775344959:
+	invokestatic function4/two(IZ)I
+	istore	1
+
+	.line 37
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		iload	1
+		invokevirtual	java/io/PrintStream/print(I)V
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		iload	2
+		invokevirtual	java/io/PrintStream/print(I)V
+		getstatic	java/lang/System/out Ljava/io/PrintStream;
+		ldc	"\n"
+		invokevirtual	java/io/PrintStream/print(Ljava/lang/String;)V
+
+
+EndGlobal:
+return
+.end method
+.method public static main([Ljava/lang/String;)V
+
+.limit locals 2
+.limit stack 5
+BeginGlobal:
+.var 0 is i I from BeginGlobal to EndGlobal
+		ldc	0x0
+		istore	0
+	LoopBegin1691192906:
+		.line 44
+			iload	0
+			ldc	0xA
+			imul
+		invokestatic function4/three(I)V
+			iload	0
+			ldc	0x1
+			iadd
+		istore	0
+			iload	0
+			ldc	0x4
+			if_icmplt	CmpLT32163837
+			ldc	0x0
+			goto	CmpLTDone32163837
+		CmpLT32163837:
+			ldc	0x1
+		CmpLTDone32163837:
+		ldc	0x1
+		if_icmpeq	LoopBegin1691192906
+	End1691192906:
+
+EndGlobal:
+return
+.end method
+