[Bug c++/47749] New: Wrong function return value

[elpa.rizzo at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47749

           Summary: Wrong function return value
           Product: gcc
           Version: 4.4.4
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: elpa.rizzo@gmail.com


This function returns always false, also if parameter is true
Target is: arm-unknown-linux-uclibc
If you:
- define string s inside if loop
- or instance string s as static
- or add an explicit final return statement
- or don't use string s
the function works correctly.
Examining the source code, one unwinding assembler statement is missing.


#include <string>

using namespace std;

bool fn_bad(bool flag)
{
    string s;
    if(flag)
    {
        s = "A";
        return true;
    }
}