Don't pull in locale dependency

vitaut · vitaut · commit a6e871e39b83 · 2025-12-04T06:28:37.000-08:00
diff --git a/include/fmt/base.h b/include/fmt/base.h
@@ -926,7 +926,7 @@ class locale_ref {
   template <typename Locale, FMT_ENABLE_IF(sizeof(Locale::collate) != 0)>
   locale_ref(const Locale& loc) : locale_(&loc) {
     // Check if std::isalpha is found via ADL to reduce the chance of misuse.
-    detail::ignore_unused(isalpha('x', loc));
+    detail::ignore_unused(sizeof(isalpha('x', loc)));
   }
 
   inline explicit operator bool() const noexcept { return locale_ != nullptr; }

Original file line number	Diff line number	Diff line change
`@@ -926,7 +926,7 @@ class locale_ref {`
`926`	`926`	`template <typename Locale, FMT_ENABLE_IF(sizeof(Locale::collate) != 0)>`
`927`	`927`	`locale_ref(const Locale& loc) : locale_(&loc) {`
`928`	`928`	`// Check if std::isalpha is found via ADL to reduce the chance of misuse.`
`929`		`- detail::ignore_unused(isalpha('x', loc));`
	`929`	`+ detail::ignore_unused(sizeof(isalpha('x', loc)));`
`930`	`930`	`}`
`931`	`931`
`932`	`932`	`inline explicit operator bool() const noexcept { return locale_ != nullptr; }`