From cfe69e4e858ce139bb990e7e146295d7e3492503 Mon Sep 17 00:00:00 2001
From: Adam Barth <github@adambarth.com>
Date: Tue, 15 Nov 2016 20:17:45 -0800
Subject: [PATCH] Catch a missing font provider earlier (#3222)

Rather than hitting an assert in platform-independent code, we now trigger an
assert closer to the relevant code when the font provider is missing.
---
 sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.cpp b/sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.cpp
index 46fa2a169..1e14d4fe6 100644
--- a/sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.cpp
+++ b/sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.cpp
@@ -119,6 +119,11 @@ sk_sp<SkTypeface> FontCache::createTypeface(
       [&response](fonts::FontResponsePtr r) { response = std::move(r); });
   font_provider.WaitForIncomingResponse();
 
+  FTL_DCHECK(response)
+      << "Unable to contact the font provider. Did you run "
+         "Flutter in an environment that has a font manager?\n"
+         "See <https://fuchsia.googlesource.com/modular/+/master/README.md>.";
+
   if (!response)
     return nullptr;
 
-- 
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