From 09ae0229c37ca57fc4da6221edb6b9069575e0f4 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Fri, 22 Jul 2016 00:19:19 -0300
Subject: [PATCH] sch2fig/main.c (read_file): be civil and report errors

---
 sch2fig/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sch2fig/main.c b/sch2fig/main.c
index 87dfeba..310eaf4 100644
--- a/sch2fig/main.c
+++ b/sch2fig/main.c
@@ -40,6 +40,10 @@ static void read_file(const char *name, void *ctx,
 	char *nl;
 
 	file = fopen(name, "r");
+	if (!file) {
+		perror(name);
+		exit(1);
+	}
 	while (fgets(buf, sizeof(buf), file)) {
 		nl = strchr(buf, '\n');
 		if (nl)