Re: [patch] Implement move semantics for iostreams

[Jonathan Wakely]

On 25/09/14 13:05 +0200, Rainer Orth wrote:

Hi Jonathan,

almost there: now I only get

ld: fatal: libstdc++-symbols.ver-sun: 4622: symbol 'std::basic_ostream<wchar_t, 
std::char_traits<wchar_t> >::basic_ostream(std::basic_iostream<wchar_t, 
std::char_traits<wchar_t> >&)': symbol version conflict
ld: fatal: libstdc++-symbols.ver-sun: 4623: symbol 'std::basic_ostream<wchar_t, 
std::char_traits<wchar_t> >::basic_ostream(std::basic_iostream<wchar_t, 
std::char_traits<wchar_t> >&)': symbol version conflict

from

 GLIBCXX_3.4:

   ##_ZNSt13basic_ostreamIwSt11char_traitsIwEEC[12]E[RP]* (glob)
   _ZNSt13basic_ostreamIwSt11char_traitsIwEEC1ERSt14basic_iostreamIwS1_E;
   _ZNSt13basic_ostreamIwSt11char_traitsIwEEC2ERSt14basic_iostreamIwS1_E;

 GLIBCXX_3.4.21:

   ##_ZNSt13basic_ostreamIwSt11char_traitsIwEEC[12]ERSt14basic_iostreamIwS1_E 
(glob)
   _ZNSt13basic_ostreamIwSt11char_traitsIwEEC1ERSt14basic_iostreamIwS1_E;
   _ZNSt13basic_ostreamIwSt11char_traitsIwEEC2ERSt14basic_iostreamIwS1_E;

Doh, yes, this additional tweak should solve that:

index f736240..95fc3c7 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -460,7 +460,7 @@ GLIBCXX_3.4 {

    # std::basic_ostream<wchar_t>
    _ZNSt13basic_ostreamIwSt11char_traitsIwEEC[12]Ev;
-    _ZNSt13basic_ostreamIwSt11char_traitsIwEEC[12]E[RP]*;
+    _ZNSt13basic_ostreamIwSt11char_traitsIwEEC[12]EP*;
    _ZNSt13basic_ostreamIwSt11char_traitsIwEED*;
    _ZNKSt13basic_ostreamIwSt11char_traitsIwEE[0-9][a-z]*;
    _ZNSt13basic_ostreamIwSt11char_traitsIwEE3putEw;

it does: {i386-pc, sparc-sun}-solaris2.1[01] bootstraps completed
successfully with it.

Great. I hope the slightly-modified version I eventually checked in
still works too :)