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https://issues.apache.org/jira/browse/STDCXX-808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615303#action_12615303
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Eric Lemings commented on STDCXX-808:
-------------------------------------
Test case added in source file tests/regress/27.streambuf.buffer.stdcxx-808.cpp.
> [Sun C++ -m64] SIGBUS in strstreambuf::seekoff() on empty stream
> ----------------------------------------------------------------
>
> Key: STDCXX-808
> URL: https://issues.apache.org/jira/browse/STDCXX-808
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 27. Input/Output
> Affects Versions: 4.2.0
> Reporter: Martin Sebor
> Assignee: Eric Lemings
> Fix For: 4.3.0
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> When compiled with Sun C++ in wide mode (with the
> [-m64|http://docs.sun.com/app/docs/doc/819-5267/gewhd?a=view] option) the
> following program (taken from the Rogue Wave regression test
> test_bug11205.cpp) abends with SIGBUS. This happens in both 4.2.0 and on the
> head of trunk. Suspect a compiler bug.
> {noformat}
> $ cat t.cpp && gmake t && dbx -q -c"run;where" t
> #include <cassert>
> #include <iosfwd>
> #include <strstream>
> int main ()
> {
> std::strstreambuf sb;
> std::streampos pos = sb.pubseekoff (10, std::ios::beg, std::ios::in);
> assert (-1 == pos);
> }
> CC -library=%none -g -m64 +w -errtags -erroff=hidef -D_RWSTDDEBUG -mt
> -I/amd/devco/sebor/stdcxx/include
> -I/build/sebor/stdcxx-suncc-5.9_j1-15D/include
> -I/amd/devco/sebor/stdcxx/examples/include -library=%none -mt -m64
> -L/build/sebor/stdcxx-suncc-5.9_j1-15D/lib
> -R/build/sebor/stdcxx-suncc-5.9_j1-15D/lib t.cpp -lstd15D -lm -o t
> Running: t
> (process id 20476)
> [EMAIL PROTECTED] ([EMAIL PROTECTED]) signal BUS (invalid address alignment)
> in std::basic_streambuf<char,std::char_traits<char> >::eback at line 166 in
> file "streambuf"
> 166 return _C_eback;
> current thread: [EMAIL PROTECTED]
> =>[1] std::basic_streambuf<char,std::char_traits<char> >::eback(this = 0xa),
> line 166 in "streambuf"
> [2] std::basic_streambuf<char,std::char_traits<char> >::_C_is_valid(this =
> 0xa), line 520 in "streambuf"
> [3] std::strstreambuf::seekoff(this = 0xa, off = 0, way = 4, which = 0),
> line 166 in "strstream.cpp"
> [4] std::basic_streambuf<char,std::char_traits<char> >::pubseekoff(this =
> 0xffffffff7ffff850, __off = 10, __way = __rw_beg, __which = __rw_in), line 99
> in "streambuf"
> [5] main(), line 9 in "t.cpp"
> {noformat}
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