[gcc r11-7672] libstdc++, Darwin, ppc : Add new long double symbols.

[Iain D Sandoe]

https://gcc.gnu.org/g:f8aa819b4ae1588b6189bb0fc675cf6334608182

commit r11-7672-gf8aa819b4ae1588b6189bb0fc675cf6334608182
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Mon Mar 15 00:30:07 2021 +0000

    libstdc++, Darwin, ppc : Add new long double symbols.
    
    We need to add the symbols for to_chars and from_chars for the
    long double cases.
    
    libstdc++-v3/ChangeLog:
    
            * config/os/bsd/darwin/ppc-extra.ver: Add matching for
            to_chars and from_chars for long double.

Diff:
---
 libstdc++-v3/config/os/bsd/darwin/ppc-extra.ver | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libstdc++-v3/config/os/bsd/darwin/ppc-extra.ver b/libstdc++-v3/config/os/bsd/darwin/ppc-extra.ver
index f0aee9e8dac..970f3bb50ed 100644
--- a/libstdc++-v3/config/os/bsd/darwin/ppc-extra.ver
+++ b/libstdc++-v3/config/os/bsd/darwin/ppc-extra.ver
@@ -16,6 +16,9 @@
 # 3.4.10
   _ZNKSt3tr14hashIgEclEg;
   _ZNKSt4hashIgEclEg;
+# LDBL_3.4.29
+  _ZSt10from_charsPKcS0_RgSt12chars_format;
+  _ZSt8to_charsPcS_g*;
 # ldbl 1.3
   _ZT[IS]g;
   _ZT[IS]Pg;