libstdc++/6511: new libstdc++ v3 testsuite regressions on *-*-solaris2.8

[Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>]

>Number:         6511
>Category:       libstdc++
>Synopsis:       new libstdc++ v3 testsuite regressions on *-*-solaris2.8
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 29 17:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Rainer Orth
>Release:        3.1 20020426 (prerelease)
>Organization:
Faculty of Technology, Bielefeld University
>Environment:
System: SunOS loge 5.8 Generic_108528-10 sun4u sparc SUNW,Ultra-250
Architecture: sun4

	
host: sparc-sun-solaris2.8
build: sparc-sun-solaris2.8
target: sparc-sun-solaris2.8

same problem on

System: SunOS arenal 5.8 Generic_111920-01 i86pc i386 i86pc
Architecture: i86pc

        
host: i386-pc-solaris2.8
build: i386-pc-solaris2.8
target: i386-pc-solaris2.8

configured with: /vol/gnu/src/gcc/gcc-3.1-branch-dist/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls
>Description:
Between 3.1 20020412 and 20020426, several libstdc++ testsuite failures
started to occur on both Solaris 8/SPARC and Intel:

+FAIL: 21_strings/inserters_extractors.cc execution test
+FAIL: 24_iterators/istream_iterator.cc execution test
+FAIL: 26_numerics/complex_inserters_extractors.cc execution test
+FAIL: 27_io/instantiations.cc execution test
+FAIL: 27_io/istream_extractor_char.cc execution test
+FAIL: 27_io/istream_extractor_other.cc execution test
+FAIL: 27_io/istream_manip.cc execution test
+FAIL: 27_io/istream_seeks.cc execution test
+FAIL: 27_io/istream_sentry.cc execution test
+FAIL: 27_io/istream_unformatted.cc execution test
+FAIL: 27_io/istringstream_members.cc execution test
+FAIL: 27_io/ostream_inserter_arith.cc execution test
+FAIL: 27_io/ostream_inserter_other.cc execution test
+FAIL: 27_io/stringstream_members.cc execution test

Those tests that existed in 3.0 passed there, so this is a regression.

Running e.g. 24_iterators/istream_iterator.cc under gdb 5.2 (after
compiling src/misc-inst.cc and test test proper with -g3 -gdwarf-2), I get
the following stack trace:

Program received signal SIGSEGV, Segmentation fault.
0x0002434c in sentry (this=0xffbef117, __in=@0xffbef488, __noskipws=82)
    at ctype_inline.h:40
40        { return _M_table[static_cast<unsigned char>(__c)] & __m; }
(gdb) where
#0  0x0002434c in sentry (this=0xffbef117, __in=@0xffbef488, __noskipws=82)
    at ctype_inline.h:40
#1  0x000244b4 in std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char> >(std::basic_istream<char, std::char_traits<char> >&, char&) (__in=@0xffbef118, __c=@0xffbef488) at istream.tcc:1021
#2  0x0001cd10 in std::istream_iterator<char, char, std::char_traits<char>, int>::_M_read() (this=0xffbef480) at stream_iterator.h:96
#3  0x0001caac in istream_iterator (this=0xffbef480, __s=@0xffbef488)
    at stream_iterator.h:60
#4  0x0001c4f4 in test02() ()
    at /vol/gnu/src/gcc/gcc-3.1-branch-dist/libstdc++-v3/testsuite/24_iterators/istream_iterator.cc:65
#5  0x0001c9d8 in main ()
    at /vol/gnu/src/gcc/gcc-3.1-branch-dist/libstdc++-v3/testsuite/24_iterators/istream_iterator.cc:89

	
>How-To-Repeat:
Bootstrap and test on sparc-sun-solaris2.8.

	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: