fix StringPiece conversion to fmt::format_string

yfeldblum · facebook-github-bot · commit 1e2a086c99ba · 2025-07-07T09:59:31.000-07:00
Summary: X-link: facebook/folly#2471 Only define conversion `StringPiece::operator fmt::string_view` for older versions of `fmt`. Fixes: facebook/folly#2468. Reviewed By: DenisYaroshevskiy Differential Revision: D77799250 fbshipit-source-id: 2948fe4f8f9c0811cb92646abc7c36acce6bfa38
diff --git a/third-party/folly/src/folly/Range.h b/third-party/folly/src/folly/Range.h
@@ -714,7 +714,7 @@ class Range {
     return Tgt(b_, walk_size());
   }
 
-#if FMT_VERSION
+#if FMT_VERSION < 100000
   template <
       typename IterType = Iter,
       std::enable_if_t<detail::range_is_char_type_v_<IterType>, int> = 0>

Original file line number	Diff line number	Diff line change
`@@ -714,7 +714,7 @@ class Range {`
`714`	`714`	`return Tgt(b_, walk_size());`
`715`	`715`	`}`
`716`	`716`
`717`		`-#if FMT_VERSION`
	`717`	`+#if FMT_VERSION < 100000`
`718`	`718`	`template <`
`719`	`719`	`typename IterType = Iter,`
`720`	`720`	`std::enable_if_t<detail::range_is_char_type_v_<IterType>, int> = 0>`