[Sun C++ -m64] SIGBUS in strstreambuf::seekoff() on empty stream
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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
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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