From 56a6adc2347b53ff5a5dc016052c6fc07ab76302 Mon Sep 17 00:00:00 2001
From: Pieter de Bie <pdebie@ai.rug.nl>
Date: Mon, 15 Dec 2008 17:33:50 +0100
Subject: [PATCH] GitGrapher: Do not crash on only a single commit

This was somewhat unfortunate, as we don't check
on if we have at least a single parent when adding
new parents. That would cause a wild pointer, or null
dereference when creating a new lane.
---
 PBGitGrapher.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PBGitGrapher.mm b/PBGitGrapher.mm
index 087caa3..50e6818 100644
--- a/PBGitGrapher.mm
+++ b/PBGitGrapher.mm
@@ -87,7 +87,7 @@ void add_line(struct PBGitGraphLine *lines, int *nLines, int upper, int from, in
 	//Add your own parents
 
 	// If we already did the first parent, don't do so again
-	if (!didFirst && currentLanes->size() < MAX_LANES) {
+	if (!didFirst && currentLanes->size() < MAX_LANES && commit.nParents) {
 		PBGitLane *newLane = new PBGitLane(commit.parentShas);
 		currentLanes->push_back(newLane);
 		newPos = currentLanes->size();