From 12dbe8b21daf907b558482821965642d0e1c7c2b Mon Sep 17 00:00:00 2001
From: Augusto Gunsch <augustogunsch@tutanota.com>
Date: Sat, 9 Jan 2021 15:31:59 -0300
Subject: [PATCH] Fix segfault

---
 compiler/compiler-scopes.c     | 12 ++++++------
 compiler/compiler-scopes.h     |  1 -
 compiler/compiler-statements.c |  1 -
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/compiler/compiler-scopes.c b/compiler/compiler-scopes.c
index 863b492..ee8b96c 100644
--- a/compiler/compiler-scopes.c
+++ b/compiler/compiler-scopes.c
@@ -10,7 +10,7 @@ char* memsegnames[] = { "local", "static", "argument", "this" };
 
 // Error messages
 void doubledeclaration(const char* name, DEBUGINFO* d1, DEBUGINFO* d2);
-void ensurenoduplicate(SCOPE* s, char* name);
+void ensurenoduplicate(SCOPE* s, DEBUGINFO* d, char* name);
 
 // Getters
 VAR* getvarinvars(VAR* vars, const char* name);
@@ -48,18 +48,18 @@ void invalidparent(SUBROUTCALL* call) {
 	exit(1);
 }
 
-void ensurenoduplicate(SCOPE* s, char* name) {
+void ensurenoduplicate(SCOPE* s, DEBUGINFO* d, char* name) {
 	VAR* v = getvar(s, name);
 	if(v != NULL)
-		doubledeclaration(name, s->currdebug, v->debug);
+		doubledeclaration(name, d, v->debug);
 
 	CLASS* c = getclass(s, name);
 	if(c != NULL)
-		doubledeclaration(name, s->currdebug, c->debug);
+		doubledeclaration(name, d, c->debug);
 
 	SUBROUTDEC* sr = getsubroutdec(s, name);
 	if(sr != NULL)
-		doubledeclaration(name, s->currdebug, sr->debug);
+		doubledeclaration(name, d, sr->debug);
 }
 
 // Scope handling
@@ -215,7 +215,7 @@ VAR* mkvar(char* type, char* name, bool primitive, DEBUGINFO* debug, MEMSEGMENT
 }
 
 void addvar(SCOPE* s, VAR** dest, VAR* v) {
-	ensurenoduplicate(s, v->name);
+	ensurenoduplicate(s, v->debug, v->name);
 
 	if(!v->primitive) {
 		CLASS* type = getclass(s, v->type);
diff --git a/compiler/compiler-scopes.h b/compiler/compiler-scopes.h
index fa3055c..2eaa2bb 100644
--- a/compiler/compiler-scopes.h
+++ b/compiler/compiler-scopes.h
@@ -22,7 +22,6 @@ typedef struct var {
 
 typedef struct scope {
 	struct compiler* compiler;
-	DEBUGINFO* currdebug;
 	CLASS* currclass;
 
 	CLASS* classes;
diff --git a/compiler/compiler-statements.c b/compiler/compiler-statements.c
index db2cc29..2f3ebe4 100644
--- a/compiler/compiler-statements.c
+++ b/compiler/compiler-statements.c
@@ -157,7 +157,6 @@ LINEBLOCK* compilelet(SCOPE* s, STATEMENT* st) {
 }
 
 LINEBLOCK* compilestatement(SCOPE* s, STATEMENT* st) {
-	s->currdebug = st->debug;
 	if(st->type == dostatement) return compilesubroutcall(s, st->dostatement);
 	if(st->type == returnstatement) return compileret(s, st);
 	if(st->type == ifstatement) return compileif(s, st);