[gcc r15-4039] libstdc++: Fix some warnings seen during bootstrap

[Jonathan Wakely via Gcc-cvs]

https://gcc.gnu.org/g:28911f626864e73c579ea2ad5f5308d2e8c3fcd9

commit r15-4039-g28911f626864e73c579ea2ad5f5308d2e8c3fcd9
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Oct 2 20:27:55 2024 +0100

    libstdc++: Fix some warnings seen during bootstrap
    
    libstdc++-v3/ChangeLog:
    
            * include/bits/locale_facets_nonio.tcc (money_put::__do_get):
            Ignore -Wformat warning for __ibm128 arguments.
            * include/tr1/tuple (ignore): Ignore -Wunused warning.

Diff:
---
 libstdc++-v3/include/bits/locale_facets_nonio.tcc | 3 +++
 libstdc++-v3/include/tr1/tuple                    | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/bits/locale_facets_nonio.tcc 
b/libstdc++-v3/include/bits/locale_facets_nonio.tcc
index 5fddc1e3b269..53553d113b23 100644
--- a/libstdc++-v3/include/bits/locale_facets_nonio.tcc
+++ b/libstdc++-v3/include/bits/locale_facets_nonio.tcc
@@ -637,6 +637,8 @@ _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11
 
 #if defined _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT \
       && defined __LONG_DOUBLE_IEEE128__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat" // '%Lf' expects 'long double'
 extern "C"
 __typeof__(__builtin_snprintf) __glibcxx_snprintfibm128 __asm__("snprintf");
 
@@ -671,6 +673,7 @@ __typeof__(__builtin_snprintf) __glibcxx_snprintfibm128 
__asm__("snprintf");
       return __intl ? _M_insert<true>(__s, __io, __fill, __digits)
                    : _M_insert<false>(__s, __io, __fill, __digits);
     }
+#pragma GCC diagnostic pop
 #endif
 
 _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11
diff --git a/libstdc++-v3/include/tr1/tuple b/libstdc++-v3/include/tr1/tuple
index b5c62b585a9a..f66090d36317 100644
--- a/libstdc++-v3/include/tr1/tuple
+++ b/libstdc++-v3/include/tr1/tuple
@@ -423,7 +423,7 @@ namespace tr1
   // TODO: Put this in some kind of shared file.
   namespace
   {
-    _Swallow_assign ignore;
+    _Swallow_assign ignore  __attribute__((__unused__));
   } // anonymous namespace
 }