From 55a1ac503549805036c2375362cb28f3d5e1afcc Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Mon, 7 Nov 2016 08:55:40 -0800
Subject: [PATCH] Fix test

---
 fmt/format.h        | 3 ++-
 test/format-test.cc | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fmt/format.h b/fmt/format.h
index fb3beb4c..0c038a53 100644
--- a/fmt/format.h
+++ b/fmt/format.h
@@ -3631,7 +3631,8 @@ void vformat(BasicWriter<Char> &writer, BasicCStringRef<Char> format_str,
       FMT_THROW(format_error("unmatched '}' in format string"));
     internal::write(writer, start, s - 1);
     format_arg<ArgFormatter>(writer, ctx.parse_arg_id(), ctx);
-    assert(*s == '}');
+    if (*s != '}')
+      FMT_THROW(format_error(fmt::format("unknown format specifier")));
     start = ++s;
   }
   internal::write(writer, start, s);
diff --git a/test/format-test.cc b/test/format-test.cc
index bb195a3c..e7e72a1d 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -1362,7 +1362,7 @@ void format_value(fmt::Writer &w, const Date &d, fmt::format_context &) {
 TEST(FormatterTest, FormatCustom) {
   Date date(2012, 12, 9);
   EXPECT_THROW_MSG(fmt::format("{:s}", date), format_error,
-                   "unmatched '}' in format string");
+                   "unknown format specifier");
 }
 
 class Answer {};