From 34c7ca0cf666aff5ab88a1ec6caedc838e4015fd Mon Sep 17 00:00:00 2001
From: Mishmish Dev <mishmish@mishmish.dev>
Date: Sun, 4 Oct 2026 03:57:42 +0100
Subject: [PATCH] Initialize the file pointer when constructing a buffer writer

---
 include/fmt/format.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/fmt/format.h b/include/fmt/format.h
index c8c69267..c9ae6eaf 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -1091,7 +1091,7 @@ class writer {
 
  public:
   inline writer(FILE* f) : buf_(nullptr), file_(f) {}
-  inline writer(detail::buffer<char>& buf) : buf_(&buf) {}
+  inline writer(detail::buffer<char>& buf) : buf_(&buf), file_(nullptr) {}
 
   /// Formats `args` according to specifications in `fmt` and writes the
   /// output to the file.