http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60765

            Bug ID: 60765
           Summary: Function attributes ignored for
                    pointer-to-member-function parameters
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: patrick at parcs dot ath.cx

$ cat this.cc
struct Foo;

void foo (int& (Foo::*) () __attribute__ ((returns_nonnull)));
$ g++ this.cc -c
this.cc:4:55: warning: ‘returns_nonnull’ attribute directive ignored
[-Wattributes]
 foo (int& (Foo::*) () __attribute__ ((returns_nonnull)));
                                                       ^
>From gcc-bugs-return-448342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Apr 04 23:12:53 2014
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From: "mirzayanovmr at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/60766] New: Wrong optimization with -O2
Date: Fri, 04 Apr 2014 23:12:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`766

            Bug ID: 60766
           Summary: Wrong optimization with -O2
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mirzayanovmr at gmail dot com

Created attachment 32546
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id2546&actioníit
Compile with -O2 and input 9

Compile the following code with -O2:

~~~~~
#include <cstdlib>
#include <iostream>
#include <cstdio>

using namespace std;

int main() {
    int n;
    cin >> n;

    for (int x = 0; x <= n; x++) {
        if (n == x + (x + 1) + (x + 2)) {
            cout << x + 2 << " " << x + 1 << " " << x << endl;
            exit(0);
        }
    }
    cout << -1 << endl;
    return 0;
}
~~~~~

Start binary and enter 9

It will print "-1", but expected output is "4 3 2".