From 43885a76e40007a195dcb83566825d896449795b Mon Sep 17 00:00:00 2001
From: mierenhoop <46939409+mierenhoop@users.noreply.github.com>
Date: Tue, 26 Mar 2024 05:11:09 +0100
Subject: [PATCH] Fix binary formatting for integers 2 and 3 (#1123)

---
 libc/fmt/formatbinary64.c           | 2 +-
 test/libc/fmt/formatbinary64_test.c | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/libc/fmt/formatbinary64.c b/libc/fmt/formatbinary64.c
index 588eaad5d..70b316856 100644
--- a/libc/fmt/formatbinary64.c
+++ b/libc/fmt/formatbinary64.c
@@ -21,7 +21,7 @@
 
 static inline int PickGoodWidth(unsigned x) {
   if (x < 16) {
-    if (x < 2) return 0;
+    if (x < 2) return 1;
     if (x < 8) return 7;
     return 15;
   } else {
diff --git a/test/libc/fmt/formatbinary64_test.c b/test/libc/fmt/formatbinary64_test.c
index b4801d0c9..fda0df92e 100644
--- a/test/libc/fmt/formatbinary64_test.c
+++ b/test/libc/fmt/formatbinary64_test.c
@@ -40,13 +40,13 @@ TEST(FormatBinary64, test2) {
 }
 
 TEST(FormatBinary64, test3) {
-  EXPECT_EQ(3, FormatBinary64(buf, 1, 2) - buf);
-  EXPECT_STREQ("0b1", buf);
+  EXPECT_EQ(4, FormatBinary64(buf, 1, 2) - buf);
+  EXPECT_STREQ("0b01", buf);
 }
 
 TEST(FormatBinary64, test4) {
-  EXPECT_EQ(1, FormatBinary64(buf, 1, 0) - buf);
-  EXPECT_STREQ("1", buf);
+  EXPECT_EQ(2, FormatBinary64(buf, 1, 0) - buf);
+  EXPECT_STREQ("01", buf);
 }
 
 TEST(FormatBinary64, test5) {