fix #2118: FMT_COMPILE did not work with tm formatter

fmtlib · Jan 30, 2021 · d2d01c9 · d2d01c9
1 parent b0b56b4
commit d2d01c9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/include/fmt/chrono.h b/include/fmt/chrono.h
@@ -423,7 +423,8 @@ template <typename Char> struct formatter<std::tm, Char> {
   }
 
   template <typename FormatContext>
-  auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) {
+  auto format(const std::tm& tm, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
     basic_memory_buffer<Char> tm_format;
     tm_format.append(specs.begin(), specs.end());
     tm_format.push_back('\0');