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Full Discussion: C++ program is crashing on re-assigning const static member variable using an int pointer
Top Forums Programming C++ program is crashing on re-assigning const static member variable using an int pointer Post 302489039 by royalibrahim on Wednesday 19th of January 2011 09:43:32 AM
Old 01-19-2011
C++ program is crashing on re-assigning const static member variable using an int pointer
Hi,

Can any one tell me why my following program is crashing?

Code:
#include <iostream>
using namespace std;

class CA {
public:
    const static int i;
};

const int CA::i = 10;

int main() {
    int* pi = const_cast<int*>(&CA::i);
    *pi = 9;
    cout << CA::i << endl;
}

 

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LEARN ABOUT DEBIAN

lm

FBB::lm(3bobcat)					      OFoldStream manipulator						  FBB::lm(3bobcat)

NAME

       FBB::lm - Manipulator setting left margins of OFoldStream objects

SYNOPSIS

       #include <bobcat/ofoldstream> or
       #include <bobcat/ofoldstreambuf>
       Linking option: -lbobcat

DESCRIPTION

       The lm class implements a manipulator that can be inserted into OFoldStream objects to set the stream's left margin to a requested value.

       Depending  on  the  tab-setting	of  the  OFoldStream  the  inserted value represents the number of blank space characters or the number of
       tab-characters that will be used for the left margin.

       The request will be processed at the next newline character or std::flush or std::endl manipulator that is inserted into the stream.  If  a
       line is still once an lm object and a flush manipulator are inserted into the stream then the new left margin will be effective at the next
       word inserted into that line (cf., the example section below).

       A bad_cast exception is thrown when the manipulator is inserted into an ostream that is not using a OFoldStreambuf buffer.

NAMESPACE

       FBB
       All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.

INHERITS FROM

       -

CONSTRUCTOR

       o      lm(size_t newValue):
	      The standard copy constructor is available.

MEMBER FUNCTIONS

       There are no public or protected member functions in this class.

EXAMPLE

	   #include <iostream>
	   #include <bobcat/ofoldstream>

	   using namespace std;
	   using namespace FBB;

	   int main()
	   {
	       OFoldStream out(cout, 0, 80);
	       out << "hello world (left margin is 0)" << lm(4) << "
"
		      "this uses a 4 character wide left margin
" <<
		      lm(0) << flush << "at column 0 again
";
	       return 0;
	   }

FILES

       bobcat/lm - defines the class interface

SEE ALSO

       bobcat(7), manipulators(3bobcat), mlm(3bobcat), ofoldstream(3bobcat)

BUGS

       None Reported.

DISTRIBUTION FILES

       o      bobcat_3.01.00-x.dsc: detached signature;

       o      bobcat_3.01.00-x.tar.gz: source archive;

       o      bobcat_3.01.00-x_i386.changes: change log;

       o      libbobcat1_3.01.00-x_*.deb: debian package holding the libraries;

       o      libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages;

       o      http://sourceforge.net/projects/bobcat: public archive location;

BOBCAT

       Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.

COPYRIGHT

       This is free software, distributed under the terms of the GNU General Public License (GPL).

AUTHOR

       Frank B. Brokken (f.b.brokken@rug.nl).

libbobcat1-dev_3.01.00-x.tar.gz 				     2005-2012							  FBB::lm(3bobcat)
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