g++ hangs computer for about 5 minutes, then reports "internal error".
On program:
#include <iostream>
#include <string>
using namespace std;
int main()
{
cout << "\e[18t" << flush
string s;
return 0;
}
Compiled with:
g++ -c gcc_bug.cpp
He should report "expected ';'" error on line 9 (after flush, before string s),
but instead computer becomes not responsive, and finally g++ is being killed by
the OS.
This bug is triggerd by invalid code, but forgeting about ';' at the end of the
line is very common and cause in this particular situation very severe effect.
When I don't use "using namespace std;", but explicitly write std::cout,
std::flush and std::string, g++ works as he should.
Occurs on:
gcc version 3.3.5 20050117 (prerelease) (SUSE Linux)
Also occurs on:
g++ (GCC) 3.3.3 20040412 (Red Hat Linux 3.3.3-7)
Doesn't occur on:
g++ (GCC) 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)
Additional information:
output from g++ triggered by
g++ -v -save-temps gcc_bug.cpp
can be found at:
http://studenci.fuw.edu.pl/~jskow/www/gcc_bug.out
preprocessed file can be found at:
http://studenci.fuw.edu.pl/~jskow/www/gcc_bug.ii
--
Summary: g++ crashes (internal error) on simple code.
Product: gcc
Version: 3.3.5
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kuba dot skowron at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32008
