[gcc r11-4554] libstdc++: Fix linker script to remove conflicting patterns

[Jonathan Wakely]

https://gcc.gnu.org/g:ffe6b4101501b5ada6f09a1fdf3822a23b68b5aa

commit r11-4554-gffe6b4101501b5ada6f09a1fdf3822a23b68b5aa
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Oct 29 22:47:22 2020 +0000

    libstdc++: Fix linker script to remove conflicting patterns
    
    This should fix a bootstrap error on Solaris, due to some of the new
    symbols matching old patterns as well as new ones.
    
    libstdc++-v3/ChangeLog:
    
            * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Tighten patterns
            for old <sstream> symbols some more.

Diff:
---
 libstdc++-v3/config/abi/pre/gnu.ver | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index 80994b203df..4dddfd3d263 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -1791,11 +1791,11 @@ GLIBCXX_3.4.21 {
     _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_Openmode;
     _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EED[012]Ev;
     _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE[a34]*;
-    _ZNKSt7__cxx1115basic_stringbuf*;
+    _ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE3strEv;
     _ZNKSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE3strEv;
     _ZNKSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE5rdbufEv;
-    _ZNKSt7__cxx1119basic_istringstream*;
-    _ZNKSt7__cxx1119basic_ostringstream*;
+    _ZNKSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE3strEv;
+    _ZNKSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE5rdbufEv;
     _ZT[ISTV]NSt7__cxx1115basic_stringbuf*;
     _ZT[ISTV]NSt7__cxx1118basic_stringstream*;
     _ZT[ISTV]NSt7__cxx1119basic_istringstream*;