From ecffca672656d6e4a2d39314237289f5740e8562 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@fb.com>
Date: Wed, 7 Sep 2022 17:33:31 -0700
Subject: [PATCH] Don't parse '}' as fill

---
 include/fmt/core.h  | 1 +
 test/format-test.cc | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/fmt/core.h b/include/fmt/core.h
index 42835c0ecfed..ed36a3f845ae 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -2395,6 +2395,7 @@ FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end,
         auto c = *begin;
         if (c == '{')
           return handler.on_error("invalid fill character '{'"), begin;
+        if (c == '}') return begin;
         handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin)));
         begin = p + 1;
       } else
diff --git a/test/format-test.cc b/test/format-test.cc
index 862a3cb3c0d4..15c3f9f21536 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -1205,6 +1205,7 @@ constexpr auto uint128_max = ~static_cast<__uint128_t>(0);
 TEST(format_test, format_dec) {
   EXPECT_EQ("0", fmt::format("{0}", 0));
   EXPECT_EQ("42", fmt::format("{0}", 42));
+  EXPECT_EQ("42>", fmt::format("{:}>", 42));
   EXPECT_EQ("42", fmt::format("{0:d}", 42));
   EXPECT_EQ("42", fmt::format("{0}", 42u));
   EXPECT_EQ("-42", fmt::format("{0}", -42));