From 946498cfbc5fb633b1f12683ffaa80279f0a49cd Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Fri, 19 Apr 2019 14:48:42 -0700
Subject: [PATCH] Fix handling of zero precision

---
 include/fmt/format-inl.h | 2 +-
 test/grisu-test.cc       | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/fmt/format-inl.h b/include/fmt/format-inl.h
index 4130107e..a074f6ae 100644
--- a/include/fmt/format-inl.h
+++ b/include/fmt/format-inl.h
@@ -610,7 +610,7 @@ struct fixed_handler {
                           uint64_t error, int, bool integral) {
     FMT_ASSERT(remainder < divisor, "");
     buf[size++] = digit;
-    if (size != precision) return digits::more;
+    if (size < precision) return digits::more;
     if (!integral) {
       // Check if error * 2 < divisor with overflow prevention.
       // The check is not needed for the integral part because error = 1
diff --git a/test/grisu-test.cc b/test/grisu-test.cc
index 746e90ba..8e3c6dc1 100644
--- a/test/grisu-test.cc
+++ b/test/grisu-test.cc
@@ -52,3 +52,7 @@ TEST(GrisuTest, Prettify) {
   EXPECT_EQ("12.34", fmt::format("{}", 1234e-2));
   EXPECT_EQ("0.001234", fmt::format("{}", 1234e-6));
 }
+
+TEST(GrisuTest, ZeroPrecision) {
+  EXPECT_EQ("1", fmt::format("{:.0}", 1.0));
+}