From e89b0696d72c5f67603c7fabe7a8119762f5a1a8 Mon Sep 17 00:00:00 2001
From: Augusto Gunsch <augustogunsch@tutanota.com>
Date: Thu, 31 Dec 2020 20:41:22 -0300
Subject: [PATCH] Fix minor memory leaks

---
 compiler/compiler-expressions.c | 4 +++-
 compiler/compiler-statements.c  | 7 +++++++
 compiler/compiler-util.c        | 5 ++++-
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/compiler/compiler-expressions.c b/compiler/compiler-expressions.c
index b96ec7a..ef45988 100644
--- a/compiler/compiler-expressions.c
+++ b/compiler/compiler-expressions.c
@@ -50,7 +50,9 @@ LINE* mathopln(char op) {
 
 LINE* pushconstant(int n) {
 	char* tokens[] = { "push", "constant", itoa(n) };
-	return mkln(tokens);
+	LINE* ln = mkln(tokens);
+	free(tokens[2]);
+	return ln;
 }
 
 LINE* pushthat() {
diff --git a/compiler/compiler-statements.c b/compiler/compiler-statements.c
index 3af3bce..bb50253 100644
--- a/compiler/compiler-statements.c
+++ b/compiler/compiler-statements.c
@@ -92,8 +92,12 @@ LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st) {
 		blk = mergelnblks(blk, compilestatements(c, s, st->elsestatements));
 		char* endlabelln[] = { "label", endlabel };
 		appendln(blk, mkln(endlabelln));
+		free(endlabel);
 	}
 
+	free(falselabel);
+	free(truelabel);
+
 	return blk;
 }
 
@@ -124,6 +128,9 @@ LINEBLOCK* compilewhile(COMPILER* c, SCOPE* s, CONDSTATEMENT* w) {
 	char* endlabelln[] = { "label", endlabel };
 	appendln(blk, mkln(endlabelln));
 
+	free(explabel);
+	free(endlabel);
+
 	return blk;
 }
 
diff --git a/compiler/compiler-util.c b/compiler/compiler-util.c
index 9b44059..a699e3d 100644
--- a/compiler/compiler-util.c
+++ b/compiler/compiler-util.c
@@ -1,8 +1,11 @@
+#include <stdlib.h>
 #include "compiler-util.h"
 
 LINE* opvarraw(SCOPE* s, char* op, VAR* v) {
 	char* tokens[] = { op, v->memsegment, itoa(v->index) };
-	return mksimpleln(tokens, strcount(tokens));
+	LINE* ln = mksimpleln(tokens, strcount(tokens));
+	free(tokens[2]);
+	return ln;
 }
 
 LINE* opvar(SCOPE* s, char* op, const char* name) {