[LLVMbugs] [Bug 22485] New: EXC_BAD_ACCESS crash using std::set::erase on Mac OS X

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22485

            Bug ID: 22485
           Summary: EXC_BAD_ACCESS crash using std::set::erase on Mac OS X
           Product: libc++
           Version: unspecified
          Hardware: PC
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: delyan.nestorov at gmail.com
                CC: llvmbugs at cs.uiuc.edu, mclow.lists at gmail.com
    Classification: Unclassified

The code at the bottom compiled with Xcode or clang++ command line crashes in 

template <class _NodePtr>
inline _LIBCPP_INLINE_VISIBILITY
bool
__tree_is_left_child(_NodePtr __x) _NOEXCEPT
{
    return __x == __x->__parent_->__left_;
}

with EXC_BAD_ACCESS.


In contrast if I use the g++ compiler at
http://www.tutorialspoint.com/compile_cpp11_online.php it works just fine.

CODE:


#include <iostream>
#include <set>

struct blabla
{
public:
    int _x, _y;
    blabla() : _x(1), _y(2) {}

    void print()
    {
        std::cout<<_x<<":"<<_y<<std::endl;
    }
};


int main(int argc, const char * argv[]) {
    // insert code here...
    std::cout << "Hello, World!\n";

    std::set<blabla *> blablaset;
    for(int i=0; i<10; i++)
    {
        blablaset.insert(new blabla());
    }

    for(auto b : blablaset)
    {
        //b->print();
        auto found = blablaset.find(b);
        if(found != blablaset.end())
        {
            std::cout<<"found "<<b<<". deleting."<<std::endl;
            blablaset.erase(found);
            delete b;
        }
    }

    return 0;
}



Kind regards,
Delyan

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