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From "Martin Sebor (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-259) std::ostream::operator<<(int) fails to call width(0) on exception
Date Tue, 11 Jul 2006 19:38:31 GMT
std::ostream::operator<<(int) fails to call width(0) on exception
-----------------------------------------------------------------

         Key: STDCXX-259
         URL: http://issues.apache.org/jira/browse/STDCXX-259
     Project: C++ Standard Library
        Type: Bug

  Components: 27. Input/Output  
    Versions: 4.1.2, 4.1.3    
 Environment: all
    Reporter: Martin Sebor
 Assigned to: Martin Sebor 


lib.facet.num.put.virtuals, p5, Stage 3 is specified to end by the facet calling width(0)
before outputting any characters using the facet's iterator. The program below shows that
stdcxx fails to do so:

$ cat t.cpp && nice gmake t && ./t
#include <cassert>
#include <ostream>
#include <streambuf>

int main ()
{
    struct: std::streambuf {
        int_type overflow (int_type) {
            return throw this, traits_type::eof ();
        }
    } buf;

    std::ostream out (&buf);
    out.width (2);

    try {
        out << 1;
    }
    catch (...) { }
    assert (0 == out.width ());
}
aCC -c -I/nfs/devco/sebor/dev/stdlib/include/ansi -I/usr/include  -D_RWSTDDEBUG    -D_RWSTD_USE_CONFIG
-I/nfs/devco/sebor/dev/stdlib/include -I/build/sebor/aCC-3.27-11s/include -I/nfs/devco/sebor/dev/stdlib/examples/include
 -Aa +nostl  -g +d  +w +W392 +W655 +W684 +W818 +W819 +W849 +W229 +W361  t.cpp
aCC t.o -o t -Aa +nostl -Wl,+s -Wl,+vnocompatwarnings -L/build/sebor/aCC-3.27-11s/lib    -L/build/sebor/aCC-3.27-11s/lib
-lstd11s   -lm
Assertion failed: 0 == out.width (), file t.cpp, line 20
ABORT instruction (core dumped)


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