From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-214395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 24412 invoked by alias); 27 Mar 2007 17:39:59 -0000
Received: (qmail 24368 invoked by uid 48); 27 Mar 2007 17:39:41 -0000
Date: Tue, 27 Mar 2007 17:39:00 -0000
Message-ID: <20070327173941.24367.qmail@sourceware.org>
X-Bugzilla-Reason: CC
References: <bug-31368-14317@http.gcc.gnu.org/bugzilla/>
Subject: [Bug libstdc++/31368] basic_string and unsigned short leads to memory fault
In-Reply-To: <bug-31368-14317@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "gregoryk at edifecs dot com" <gcc-bugzilla@gcc.gnu.org>
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2007-03/txt/msg02593.txt.bz2



------- Comment #10 from gregoryk at edifecs dot com  2007-03-27 18:39 -------
Got it, thanks. In may original test I was relaying on LD_LIBRARY_PATH to have
current folder in the values. And there was no checking of dlopen result for
simplicity. Here is updated code. It will search for libloader.so in current
folder.

#include <dlfcn.h>
#include <string>
#include "loader.h"

typedef void *pfLoader(std::ustring&);

int main(int argc, char* argv[])
{
        void * libHandle = dlopen("./libloader.so", RTLD_NOW|RTLD_GLOBAL);

        if (0 == libHandle)
        {
                printf("Can not load \"./libloader.so\".\n");
                return 1;
        }

        pfLoader* pF = (pfLoader*)dlsym(libHandle, "read_string");

        if (0 == pF)
        {
                printf("Can not find function \"read_string\" in
libloader.so\n");
                return 2;
        }

        std::ustring s;
//      s.reserve(1);   // uncomment this line to prevent abort
        pF(s);
        return 0;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31368