diff --git a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
index a30965438..4d5b4cb8b 100644
--- a/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
+++ b/src/test/java/dk/camelot64/kickc/test/TestPrograms.java
@@ -37,10 +37,14 @@ public class TestPrograms {
    public TestPrograms() {
    }
 
+   @Test
+   public void testPreprocessor5() throws IOException, URISyntaxException {
+      compileAndCompare("preprocessor-5", log());
+   }
 
    @Test
    public void testPreprocessor4() throws IOException, URISyntaxException {
-      compileAndCompare("preprocessor-4", log());
+      compileAndCompare("preprocessor-4");
    }
 
    @Test
diff --git a/src/test/kc/preprocessor-5.kc b/src/test/kc/preprocessor-5.kc
new file mode 100644
index 000000000..d7540d655
--- /dev/null
+++ b/src/test/kc/preprocessor-5.kc
@@ -0,0 +1,15 @@
+// Test the preprocessor
+// Test multi-line macro
+
+#define PRINTXX \
+    SCREEN[idx++] = 'x'; \
+    SCREEN[idx++] = 'x'
+
+char * SCREEN = 0x0400;
+char idx = 0;
+
+void main() {
+    SCREEN[idx++] = '-';
+    PRINTXX;
+    SCREEN[idx++] = '-';
+}
\ No newline at end of file
diff --git a/src/test/ref/preprocessor-5.asm b/src/test/ref/preprocessor-5.asm
new file mode 100644
index 000000000..ee9484fb5
--- /dev/null
+++ b/src/test/ref/preprocessor-5.asm
@@ -0,0 +1,20 @@
+// Test the preprocessor
+// Test multi-line macro
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+  .label SCREEN = $400
+main: {
+    // SCREEN[idx++] = '-'
+    lda #'-'
+    sta SCREEN
+    // PRINTXX
+    lda #'x'
+    sta SCREEN+1
+    sta SCREEN+2
+    // SCREEN[idx++] = '-'
+    lda #'-'
+    sta SCREEN+3
+    // }
+    rts
+}
diff --git a/src/test/ref/preprocessor-5.cfg b/src/test/ref/preprocessor-5.cfg
new file mode 100644
index 000000000..0c0c654c7
--- /dev/null
+++ b/src/test/ref/preprocessor-5.cfg
@@ -0,0 +1,20 @@
+@begin: scope:[]  from
+  [0] phi()
+  to:@1
+@1: scope:[]  from @begin
+  [1] phi()
+  [2] call main 
+  to:@end
+@end: scope:[]  from @1
+  [3] phi()
+
+(void()) main()
+main: scope:[main]  from @1
+  [4] *((const byte*) SCREEN) ← (byte) '-'
+  [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x'
+  [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x'
+  [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-'
+  to:main::@return
+main::@return: scope:[main]  from main
+  [8] return 
+  to:@return
diff --git a/src/test/ref/preprocessor-5.log b/src/test/ref/preprocessor-5.log
new file mode 100644
index 000000000..c34d56e76
--- /dev/null
+++ b/src/test/ref/preprocessor-5.log
@@ -0,0 +1,324 @@
+Identified constant variable (byte*) SCREEN
+
+CONTROL FLOW GRAPH SSA
+@begin: scope:[]  from
+  (byte) idx#0 ← (byte) 0
+  to:@1
+
+(void()) main()
+main: scope:[main]  from @1
+  (byte) idx#7 ← phi( @1/(byte) idx#10 )
+  *((const byte*) SCREEN + (byte) idx#7) ← (byte) '-'
+  (byte) idx#1 ← ++ (byte) idx#7
+  *((const byte*) SCREEN + (byte) idx#1) ← (byte) 'x'
+  (byte) idx#2 ← ++ (byte) idx#1
+  *((const byte*) SCREEN + (byte) idx#2) ← (byte) 'x'
+  (byte) idx#3 ← ++ (byte) idx#2
+  *((const byte*) SCREEN + (byte) idx#3) ← (byte) '-'
+  (byte) idx#4 ← ++ (byte) idx#3
+  to:main::@return
+main::@return: scope:[main]  from main
+  (byte) idx#8 ← phi( main/(byte) idx#4 )
+  (byte) idx#5 ← (byte) idx#8
+  return 
+  to:@return
+@1: scope:[]  from @begin
+  (byte) idx#10 ← phi( @begin/(byte) idx#0 )
+  call main 
+  to:@2
+@2: scope:[]  from @1
+  (byte) idx#9 ← phi( @1/(byte) idx#5 )
+  (byte) idx#6 ← (byte) idx#9
+  to:@end
+@end: scope:[]  from @2
+
+SYMBOL TABLE SSA
+(label) @1
+(label) @2
+(label) @begin
+(label) @end
+(const byte*) SCREEN = (byte*)(number) $400
+(byte) idx
+(byte) idx#0
+(byte) idx#1
+(byte) idx#10
+(byte) idx#2
+(byte) idx#3
+(byte) idx#4
+(byte) idx#5
+(byte) idx#6
+(byte) idx#7
+(byte) idx#8
+(byte) idx#9
+(void()) main()
+(label) main::@return
+
+Simplifying constant pointer cast (byte*) 1024
+Successful SSA optimization PassNCastSimplification
+Alias idx#4 = idx#8 idx#5 
+Alias idx#0 = idx#10 
+Alias idx#6 = idx#9 
+Successful SSA optimization Pass2AliasElimination
+Identical Phi Values (byte) idx#7 (byte) idx#0
+Identical Phi Values (byte) idx#6 (byte) idx#4
+Successful SSA optimization Pass2IdenticalPhiElimination
+Constant (const byte) idx#0 = 0
+Successful SSA optimization Pass2ConstantIdentification
+Simplifying expression containing zero SCREEN in [2] *((const byte*) SCREEN + (const byte) idx#0) ← (byte) '-'
+Successful SSA optimization PassNSimplifyExpressionWithZero
+Eliminating unused variable (byte) idx#4 and assignment [7] (byte) idx#4 ← ++ (byte) idx#3
+Successful SSA optimization PassNEliminateUnusedVars
+Constant right-side identified [1] (byte) idx#1 ← ++ (const byte) idx#0
+Successful SSA optimization Pass2ConstantRValueConsolidation
+Constant (const byte) idx#1 = ++idx#0
+Successful SSA optimization Pass2ConstantIdentification
+Constant right-side identified [2] (byte) idx#2 ← ++ (const byte) idx#1
+Successful SSA optimization Pass2ConstantRValueConsolidation
+Constant (const byte) idx#2 = ++idx#1
+Successful SSA optimization Pass2ConstantIdentification
+Constant right-side identified [3] (byte) idx#3 ← ++ (const byte) idx#2
+Successful SSA optimization Pass2ConstantRValueConsolidation
+Constant (const byte) idx#3 = ++idx#2
+Successful SSA optimization Pass2ConstantIdentification
+Inlining constant with different constant siblings (const byte) idx#0
+Inlining constant with different constant siblings (const byte) idx#1
+Inlining constant with different constant siblings (const byte) idx#2
+Inlining constant with different constant siblings (const byte) idx#3
+Constant inlined idx#2 = ++++(byte) 0
+Constant inlined idx#3 = ++++++(byte) 0
+Constant inlined idx#0 = (byte) 0
+Constant inlined idx#1 = ++(byte) 0
+Successful SSA optimization Pass2ConstantInlining
+Consolidated array index constant in *(SCREEN+++0)
+Consolidated array index constant in *(SCREEN+++++0)
+Consolidated array index constant in *(SCREEN+++++++0)
+Successful SSA optimization Pass2ConstantAdditionElimination
+Simplifying constant integer increment ++0
+Simplifying constant integer increment ++0
+Simplifying constant integer increment ++1
+Successful SSA optimization Pass2ConstantSimplification
+Simplifying constant integer increment ++1
+Simplifying constant integer increment ++2
+Successful SSA optimization Pass2ConstantSimplification
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @1
+Adding NOP phi() at start of @2
+Adding NOP phi() at start of @end
+CALL GRAPH
+Calls in [] to main:2 
+
+Created 0 initial phi equivalence classes
+Coalesced down to 0 phi equivalence classes
+Culled Empty Block (label) @2
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @1
+Adding NOP phi() at start of @end
+
+FINAL CONTROL FLOW GRAPH
+@begin: scope:[]  from
+  [0] phi()
+  to:@1
+@1: scope:[]  from @begin
+  [1] phi()
+  [2] call main 
+  to:@end
+@end: scope:[]  from @1
+  [3] phi()
+
+(void()) main()
+main: scope:[main]  from @1
+  [4] *((const byte*) SCREEN) ← (byte) '-'
+  [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x'
+  [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x'
+  [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-'
+  to:main::@return
+main::@return: scope:[main]  from main
+  [8] return 
+  to:@return
+
+
+VARIABLE REGISTER WEIGHTS
+(byte) idx
+(void()) main()
+
+Initial phi equivalence classes
+Complete equivalence classes
+
+INITIAL ASM
+Target platform is c64basic / MOS6502X
+  // File Comments
+// Test the preprocessor
+// Test multi-line macro
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(__bbegin)
+.pc = $80d "Program"
+  // Global Constants & labels
+  .label SCREEN = $400
+  // @begin
+__bbegin:
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+__b1_from___bbegin:
+  jmp __b1
+  // @1
+__b1:
+  // [2] call main 
+  jsr main
+  // [3] phi from @1 to @end [phi:@1->@end]
+__bend_from___b1:
+  jmp __bend
+  // @end
+__bend:
+  // main
+main: {
+    // [4] *((const byte*) SCREEN) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN
+    // [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    lda #'x'
+    sta SCREEN+1
+    // [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    lda #'x'
+    sta SCREEN+2
+    // [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN+3
+    jmp __breturn
+    // main::@return
+  __breturn:
+    // [8] return 
+    rts
+}
+  // File Data
+
+REGISTER UPLIFT POTENTIAL REGISTERS
+Statement [4] *((const byte*) SCREEN) ← (byte) '-' [ ] ( main:2 [ ] { }  ) always clobbers reg byte a 
+Statement [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x' [ ] ( main:2 [ ] { }  ) always clobbers reg byte a 
+Statement [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x' [ ] ( main:2 [ ] { }  ) always clobbers reg byte a 
+Statement [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-' [ ] ( main:2 [ ] { }  ) always clobbers reg byte a 
+
+REGISTER UPLIFT SCOPES
+Uplift Scope [main] 
+Uplift Scope [] 
+
+Uplifting [main] best 45 combination 
+Uplifting [] best 45 combination 
+
+ASSEMBLER BEFORE OPTIMIZATION
+  // File Comments
+// Test the preprocessor
+// Test multi-line macro
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(__bbegin)
+.pc = $80d "Program"
+  // Global Constants & labels
+  .label SCREEN = $400
+  // @begin
+__bbegin:
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+__b1_from___bbegin:
+  jmp __b1
+  // @1
+__b1:
+  // [2] call main 
+  jsr main
+  // [3] phi from @1 to @end [phi:@1->@end]
+__bend_from___b1:
+  jmp __bend
+  // @end
+__bend:
+  // main
+main: {
+    // [4] *((const byte*) SCREEN) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN
+    // [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    lda #'x'
+    sta SCREEN+1
+    // [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    lda #'x'
+    sta SCREEN+2
+    // [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN+3
+    jmp __breturn
+    // main::@return
+  __breturn:
+    // [8] return 
+    rts
+}
+  // File Data
+
+ASSEMBLER OPTIMIZATIONS
+Removing instruction jmp __b1
+Removing instruction jmp __bend
+Removing instruction jmp __breturn
+Succesful ASM optimization Pass5NextJumpElimination
+Removing instruction lda #'x'
+Succesful ASM optimization Pass5UnnecesaryLoadElimination
+Removing instruction __b1_from___bbegin:
+Removing instruction __b1:
+Removing instruction __bend_from___b1:
+Succesful ASM optimization Pass5RedundantLabelElimination
+Removing instruction __bend:
+Removing instruction __breturn:
+Succesful ASM optimization Pass5UnusedLabelElimination
+Updating BasicUpstart to call main directly
+Removing instruction jsr main
+Succesful ASM optimization Pass5SkipBegin
+Removing instruction __bbegin:
+Succesful ASM optimization Pass5UnusedLabelElimination
+
+FINAL SYMBOL TABLE
+(label) @1
+(label) @begin
+(label) @end
+(const byte*) SCREEN = (byte*) 1024
+(byte) idx
+(void()) main()
+(label) main::@return
+
+
+
+FINAL ASSEMBLER
+Score: 28
+
+  // File Comments
+// Test the preprocessor
+// Test multi-line macro
+  // Upstart
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+  // Global Constants & labels
+  .label SCREEN = $400
+  // @begin
+  // [1] phi from @begin to @1 [phi:@begin->@1]
+  // @1
+  // [2] call main 
+  // [3] phi from @1 to @end [phi:@1->@end]
+  // @end
+  // main
+main: {
+    // SCREEN[idx++] = '-'
+    // [4] *((const byte*) SCREEN) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN
+    // PRINTXX
+    // [5] *((const byte*) SCREEN+(byte) 1) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    lda #'x'
+    sta SCREEN+1
+    // [6] *((const byte*) SCREEN+(byte) 2) ← (byte) 'x' -- _deref_pbuc1=vbuc2 
+    sta SCREEN+2
+    // SCREEN[idx++] = '-'
+    // [7] *((const byte*) SCREEN+(byte) 3) ← (byte) '-' -- _deref_pbuc1=vbuc2 
+    lda #'-'
+    sta SCREEN+3
+    // main::@return
+    // }
+    // [8] return 
+    rts
+}
+  // File Data
+
diff --git a/src/test/ref/preprocessor-5.sym b/src/test/ref/preprocessor-5.sym
new file mode 100644
index 000000000..1a817b3c6
--- /dev/null
+++ b/src/test/ref/preprocessor-5.sym
@@ -0,0 +1,8 @@
+(label) @1
+(label) @begin
+(label) @end
+(const byte*) SCREEN = (byte*) 1024
+(byte) idx
+(void()) main()
+(label) main::@return
+