From d671bf524ea25f7f0311bd98e4aaefa10b002a07 Mon Sep 17 00:00:00 2001
From: theomegacarrot <theomegacarrot@gmail.com>
Date: Tue, 14 Mar 2023 20:29:17 -0400
Subject: [PATCH] fix case of variant which is valueless by exception

---
 include/fmt/std.h | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/include/fmt/std.h b/include/fmt/std.h
index 24bf2c53..1583ca21 100644
--- a/include/fmt/std.h
+++ b/include/fmt/std.h
@@ -218,11 +218,15 @@ struct formatter<
     auto out = ctx.out();
 
     out = detail::write<Char>(out, "variant(");
-    std::visit(
-        [&](const auto& v) {
-          out = detail::write_variant_alternative<Char>(out, v);
-        },
-        value);
+    try {
+      std::visit(
+          [&](const auto& v) {
+            out = detail::write_variant_alternative<Char>(out, v);
+          },
+          value);
+    } catch (const std::bad_variant_access&) {
+      detail::write<Char>(out, "valueless by exception");
+    }
     *out++ = ')';
     return out;
   }