From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 11 Nov 2016 23:19:00 +0000 (+0200)
Subject: Recognize superceded assignments even for out variables
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=77e3e702d39a2547a99dd12eea7906d124ba5477

Recognize superceded assignments even for out variables
---

diff --git a/source/programcompiler.cpp b/source/programcompiler.cpp
index 98b11e89..d518ef3a 100644
--- a/source/programcompiler.cpp
+++ b/source/programcompiler.cpp
@@ -621,7 +621,10 @@ void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
 		unused_nodes.erase(var.declaration);
 		map<VariableDeclaration *, Node *>::iterator i = assignments.find(var.declaration);
 		if(i!=assignments.end())
+		{
 			unused_nodes.erase(i->second);
+			assignments.erase(i);
+		}
 	}
 }
 
@@ -650,11 +653,12 @@ void ProgramCompiler::UnusedVariableLocator::visit(ExpressionStatement &expr)
 	TraversingVisitor::visit(expr);
 	if(assignment && assignment_target)
 	{
+		Node *&assign = assignments[assignment_target];
+		if(assign)
+			unused_nodes.insert(assign);
+		assign = &expr;
 		if(assignment_target->interface!="out" || (stage->type!=FRAGMENT && !assignment_target->linked_declaration))
-		{
 			unused_nodes.insert(&expr);
-			assignments[assignment_target] = &expr;
-		}
 		else
 			unused_nodes.erase(assignment_target);
 	}