[STDCXX-542] message catalog assert/crash after opening multiple

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.2, 4.1.3, 4.1.4
• Fix Version/s: 4.2.0
• Component/s: 22. Localization

Environment

Windows

• Assignee: Farid Zaripov
• Reporter: Travis Vitek
• Created: 31/Aug/07 21:18
• Updated: 06/Sep/07 14:56
• Resolved: 05/Sep/07 16:03

Description

The below code asserts/crashes reliably on windows, but runs to completion on at least one other platform. Note that I copied the rwstdmessages.dll from the examples directory to simplify the testcase.

C:\build\stdcxx\build\msvc-8.0\15d\tests>type t.cpp
#include <iostream>
#include <locale>
#include <cassert>

// note same problem occurs even if catalog files are
// different.
#ifdef _WIN32

1. define CATALOG0 "rwstdmessages.dll"
2. define CATALOG1 "rwstdmessages.dll"
   #else
3. define CATALOG0 "./rwstdmessages.cat"
4. define CATALOG1 "./rwstdmessages.cat"
   #endif

int main (int argc, char *argv[])
{
typedef std::messages<char> messagesT;

const std::locale loc;

const messagesT& msgs =
std::use_facet<messagesT>(loc);

const messagesT::catalog cat0 =
msgs.open (CATALOG0, loc);

assert(! (cat0 < 0)); // ensure open succeeded

const messagesT::catalog cat1 =
msgs.open (CATALOG1, loc);

assert(! (cat1 < 0)); // ensure open succeeded

msgs.close (cat1); // crash/assert here
msgs.close (cat0);

return 0;
}
C:\build\stdcxx\build\msvc-8.0\15d\tests>t
C:\build\stdcxx\include\rw/iterbase.h:436: class __rw::rw_cat *&thiscall __rw::rw_debug_iter<class std::vector<class __rw::rw_cat *,class std::allocator<class __rw::rw_cat *> >,class __rw::rw_cat * *,class __rw::_rw_cat * *>::operator *(void) const: Assertion '_C_is_dereferenceable ()'
failed.

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

Issue Links

• is related to: STDCXX-508 __rw_catlist vector accessed beyond the last element in third call to catopen() (src/catalog.cpp)