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Posted to dev@stdcxx.apache.org by "Martin Sebor (JIRA)" <ji...@apache.org> on 2006/03/04 01:40:39 UTC
[jira] Created: (STDCXX-161) filebuf::sgetn() fails after sputn()
in stdio mode
filebuf::sgetn() fails after sputn() in stdio mode
--------------------------------------------------
Key: STDCXX-161
URL: http://issues.apache.org/jira/browse/STDCXX-161
Project: C++ Standard Library
Type: Bug
Components: 27. Input/Output
Versions: 4.1.3
Environment: all
Reporter: Martin Sebor
Assigned to: Martin Sebor
Priority: Critical
Fix For: 4.1.4
The program below fails at runtime (std::ios::stdio is an extension of this implementation that forces the filebuf to use the stdio facilities for I/O instead of OS native calls).
$ cat t.cpp && gmake t && ./t
#include <fstream>
#include <cassert>
int main ()
{
std::filebuf fb;
assert (0 != fb.open ("testfile.text", std::ios::out));
assert (6 == fb.sputn ("ABCDEF", 6));
assert (0 != fb.close ());
assert (0 != fb.open ("testfile.text",
std::ios::in | std::ios::out | std::ios::stdio));
assert (3 == fb.sputn ("abc", 3));
assert (-1 != fb.pubsync ());
char buf [3] = "";
assert (3 == fb.sgetn (buf, sizeof buf));
assert (0 == std::filebuf::traits_type::compare ("DEF", buf, 3));
}
aCC -c -I/build/sebor/dev/stdlib/include/ansi -I/usr/include -D_RWSTDDEBUG -mt -D_RWSTD_USE_CONFIG -I/build/sebor/aCC-3.63-15s/include -I/build/sebor/dev/stdlib/include -I/build/sebor/dev/stdlib/../rwtest -I/build/sebor/dev/stdlib/../rwtest/include -I/build/sebor/dev/stdlib/tests/include -Aa +nostl -g +d +w +W392 +W655 +W684 +W818 +W819 +W849 t.cpp
aCC t.o -o t -L/build/sebor/aCC-3.63-15s/rwtest -lrwtest15s -Aa +nostl -Wl,+s -Wl,+vnocompatwarnings -L/build/sebor/aCC-3.63-15s/lib -mt -L/build/sebor/aCC-3.63-15s/lib -lstd15s -lm
Assertion failed: 0 == std::filebuf::traits_type::compare ("DEF", buf, 3), file t.cpp, line 20
ABORT instruction (core dumped)
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[jira] Resolved: (STDCXX-161) filebuf::sgetn() fails after sputn()
in stdio mode
Posted by "Martin Sebor (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/STDCXX-161?page=all ]
Martin Sebor resolved STDCXX-161:
---------------------------------
Resolution: Fixed
Fixed with the referenced change.
> filebuf::sgetn() fails after sputn() in stdio mode
> --------------------------------------------------
>
> Key: STDCXX-161
> URL: http://issues.apache.org/jira/browse/STDCXX-161
> Project: C++ Standard Library
> Type: Bug
> Components: 27. Input/Output
> Versions: 4.1.3
> Environment: all
> Reporter: Martin Sebor
> Assignee: Martin Sebor
> Priority: Critical
> Fix For: 4.1.4
>
> The program below fails at runtime (std::ios::stdio is an extension of this implementation that forces the filebuf to use the stdio facilities for I/O instead of OS native calls).
> $ cat t.cpp && gmake t && ./t
> #include <fstream>
> #include <cassert>
> int main ()
> {
> std::filebuf fb;
> assert (0 != fb.open ("testfile.text", std::ios::out));
> assert (6 == fb.sputn ("ABCDEF", 6));
> assert (0 != fb.close ());
> assert (0 != fb.open ("testfile.text",
> std::ios::in | std::ios::out | std::ios::stdio));
> assert (3 == fb.sputn ("abc", 3));
> assert (-1 != fb.pubsync ());
> char buf [3] = "";
> assert (3 == fb.sgetn (buf, sizeof buf));
> assert (0 == std::filebuf::traits_type::compare ("DEF", buf, 3));
> }
> aCC -c -I/build/sebor/dev/stdlib/include/ansi -I/usr/include -D_RWSTDDEBUG -mt -D_RWSTD_USE_CONFIG -I/build/sebor/aCC-3.63-15s/include -I/build/sebor/dev/stdlib/include -I/build/sebor/dev/stdlib/../rwtest -I/build/sebor/dev/stdlib/../rwtest/include -I/build/sebor/dev/stdlib/tests/include -Aa +nostl -g +d +w +W392 +W655 +W684 +W818 +W819 +W849 t.cpp
> aCC t.o -o t -L/build/sebor/aCC-3.63-15s/rwtest -lrwtest15s -Aa +nostl -Wl,+s -Wl,+vnocompatwarnings -L/build/sebor/aCC-3.63-15s/lib -mt -L/build/sebor/aCC-3.63-15s/lib -lstd15s -lm
> Assertion failed: 0 == std::filebuf::traits_type::compare ("DEF", buf, 3), file t.cpp, line 20
> ABORT instruction (core dumped)
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