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Date: Thu, 27 Oct 2005 23:28:55 +0200 (CEST)
From: "Martin Sebor (JIRA)" <jira@apache.org>
To: stdcxx-dev@incubator.apache.org
Subject: [jira] Created: (STDCXX-59) std::istream::getline(char*,
 size_type) doesn't store NUL on failure
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std::istream::getline(char*, size_type) doesn't store NUL on failure
--------------------------------------------------------------------

         Key: STDCXX-59
         URL: http://issues.apache.org/jira/browse/STDCXX-59
     Project: STDCXX
        Type: Bug
  Components: 27. Input/Output  
    Versions: 4.1.2    
 Environment: all
    Reporter: Martin Sebor
 Assigned to: Martin Sebor 
     Fix For: 4.1.3


The program below aborts at runtime. According to lib.istream.unformatted, p20:
    "[getline...] stores a null character (using charT()) into the next successive location of the array."

$ cat t.cpp && nice make t -r && ./t
#include <cassert>
#include <sstream>

int main ()
{
    std::istringstream strm;

    strm.setstate (strm.failbit);

    char s [3] = { 'x', 'y', 'z' };
    strm.getline (s, 2);

    assert ('\0' == s [0]);
    assert ('y'  == s [1]);
    assert ('z'  == s [2]);
}

gcc -c -I/build/sebor/dev/stdlib/include/ansi -D_RWSTDDEBUG   -pthreads -D_RWSTD_USE_CONFIG -I/build/sebor/gcc-3.4.3-15s/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  -pedantic -nostdinc++ -g  -Wall -W -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long  t.cpp
gcc t.o -o t -L/build/sebor/gcc-3.4.3-15s/rwtest -lrwtest15s -pthreads -L/build/sebor/gcc-3.4.3-15s/lib -lstd15s  -lsupc++ -lm
Assertion failed: '\0' == s [0], file t.cpp, line 13
Abort (core dumped)


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