[Bug c++/44590] New: [4.6 Regression] Revision 159362 caused multiple failures on the libstdc++-v3 tests

[dominiq at lps dot ens dot fr]

Revision 159362 caused the following failures of the libstdc++-v3 
testsuite on powerpc-apple-darwin9 and x86_64-apple-darwin10:

FAIL: 27_io/basic_stringbuf/in_avail/char/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/in_avail/wchar_t/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sbumpc/char/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sbumpc/wchar_t/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sgetc/char/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sgetc/wchar_t/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sgetn/char/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/sgetn/wchar_t/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/snextc/char/1.cc (test for excess errors)
FAIL: 27_io/basic_stringbuf/snextc/wchar_t/1.cc (test for excess errors)

and on x86_64-apple-darwin10 only:

FAIL: ext/stdio_sync_filebuf/char/1.cc (test for excess errors)
FAIL: ext/stdio_sync_filebuf/char/12048-3.cc (test for excess errors)
FAIL: ext/stdio_sync_filebuf/char/12048-4.cc (test for excess errors)
FAIL: ext/stdio_sync_filebuf/wchar_t/1.cc (test for excess errors)
FAIL: ext/stdio_sync_filebuf/wchar_t/12948-3.cc (test for excess errors)
FAIL: ext/stdio_sync_filebuf/wchar_t/12948-4.cc (test for excess errors)

see http://gcc.gnu.org/ml/gcc-testresults/2010-05/msg01227.html
and http://gcc.gnu.org/ml/gcc-testresults/2010-06/msg00587.html
(Note that the failures on powerpc-apple-darwin9 for
FAIL: ext/mt_allocator/deallocate_global_thread-1.cc execution test
FAIL: ext/mt_allocator/deallocate_global_thread-3.cc execution test
are unrelated and much older).

The reason of the failures can be found at

http://gcc.gnu.org/regtest/HEAD/native-logsum/powerpc-apple-darwin9.8.0/libstdc++-v3/testsuite/libstdc++.log.gzip

Executing on host: /Users/regress/tbox/native/build/./gcc/g++ -shared-libgcc
-B/Users/regress/tbox/native/build/./gcc -nostdinc++
-L/Users/regress/tbox/native/build/powerpc-apple-darwin9.8.0/libstdc++-v3/src
-L/Users/regress/tbox/native/build/powerpc-apple-darwin9.8.0/libstdc++-v3/src/.libs
-B/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/bin/
-B/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/lib/ -isystem
/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/include -isystem
/Users/regress/tbox/objs/powerpc-apple-darwin9.8.0/sys-include
-B/Users/regress/tbox/native/build/powerpc-apple-darwin9.8.0/./libstdc++-v3/src/.libs
-g -O2 -D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections
-g -O2 -g -O2 -DLOCALEDIR="." -nostdinc++
-I/Users/regress/tbox/native/build/powerpc-apple-darwin9.8.0/libstdc++-v3/include/powerpc-apple-darwin9.8.0
-I/Users/regress/tbox/native/build/powerpc-apple-darwin9.8.0/libstdc++-v3/include
-I/Users/regress/tbox/svn-gcc/libstdc++-v3/libsupc++
-I/Users/regress/tbox/svn-gcc/libstdc++-v3/include/backward
-I/Users/regress/tbox/svn-gcc/libstdc++-v3/testsuite/util
/Users/regress/tbox/svn-gcc/libstdc++-v3/testsuite/27_io/basic_stringbuf/in_avail/char/1.cc
   -multiply_defined suppress -include bits/stdc++.h ./libtestc++.a -liconv 
-lm   -o ./1.exe    (timeout = 600)
/Users/regress/tbox/svn-gcc/libstdc++-v3/testsuite/27_io/basic_stringbuf/in_avail/char/1.cc:53:1:
error: Inline clone with address taken
std::basic_string<_CharT, _Traits, _Alloc>::~basic_string() [with _CharT =
char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]/813(-1)
@0x1b590d8 (asm: _ZNSsD1Ev) (inline copy in virtual
std::basic_stringbuf<char>::~basic_stringbuf()/838) availability:local analyzed
14 time, 12 benefit (6 after inlining) 5 size, 3 benefit (14 after inlining) 1
bytes stack usage address_taken body local finalized inlinable
  called by: virtual std::basic_stringbuf<char>::~basic_stringbuf()/838 (1.00
per call) (inlined) 
  calls: void std::basic_string<_CharT, _Traits,
_Alloc>::_Rep::_M_dispose(const _Alloc&) [with _CharT = char, _Traits =
std::char_traits<char>, _Alloc = std::allocator<char>]/782 (inlined) (1.00 per
call) 
  References: 
  Refering this function:  fn:void
_Z41__static_initialization_and_destruction_0ii.constprop.0()/850 (addr)
fn:void _Z41__static_initialization_and_destruction_0ii.constprop.0()/850
(addr) fn:void
_Z41__static_initialization_and_destruction_0ii.constprop.0()/850 (addr)
/Users/regress/tbox/svn-gcc/libstdc++-v3/testsuite/27_io/basic_stringbuf/in_avail/char/1.cc:53:1:
internal compiler error: verify_cgraph_node failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1


-- 
           Summary: [4.6 Regression] Revision 159362 caused multiple
                    failures on the libstdc++-v3 tests
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dominiq at lps dot ens dot fr
 GCC build triplet: *--apple-darwin*
  GCC host triplet: *-apple-darwin*
GCC target triplet: *-apple-darwin*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44590