Replace a basic_string specific _GLIBCXX_EXTERN_TEMPLATE > 0 with
simple check for _GLIBCXX_EXTERN_TEMPLATE. This make sure that
extern definition is also use for -O0 (default).
Exported declarations are also important for future extensibility,
as they always pick latest implementation.
libstdc++-v3/ChangeLog:
* include/std/format (__do_vformat_to): Change the preprocessor
check for __do_vformat_to.
---
I haven't noticed the issue, because I was testing the build times
with -O2.
Testing on x86_64-linux. OK for trunk and 16 when all test passes?
libstdc++-v3/include/std/format | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/std/format b/libstdc++-v3/include/std/format
index 4a517b70889..db226ecb0c8 100644
--- a/libstdc++-v3/include/std/format
+++ b/libstdc++-v3/include/std/format
@@ -5381,7 +5381,7 @@ namespace __format
// instantiates formatters for types stored in basic_format_arg, we can
// support only single encoding, in this case unicode. This should cover
// most common use cases.
-#if __cplusplus <= 202002L && _GLIBCXX_EXTERN_TEMPLATE > 0
+#if __cplusplus <= 202002L && _GLIBCXX_EXTERN_TEMPLATE
extern template _Sink_iter<char>
__do_vformat_to<char, 1>(_Sink_iter<char>, string_view,
format_context&);
--
2.54.0
