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Re: Looking for some help with GCC 6 and bad code generation

On 4/20/2016 7:18 PM, Andrew Pinski wrote:
On Thu, Apr 21, 2016 at 9:11 AM, Zan Lynx <> wrote:
I would like someone to look at this and tell me this is an already
fixed bug. Or that recent GCC patches may have fixed it. :-)

Or it would also be great to get some advice on building a reproducer
without needing to include many megabytes of proprietary code plus Boost.

I've been using Fedora 24 Alpha and of course I've somehow managed to
write some C++ code even more confusing for GCC than Firefox. Heh.

The problem is a crash when std::string tries to free memory from a
temporary std::string that was bound to a const reference.

And it only crashes when I pass -O2 or -O3 and the -fprofile-generate flags.

What is the return type of URLDatabaseReader_1::identifier() ?
Also does -fsanitize=undefined say anything about your code?


const std::string& URLDatabaseReader_1::identifier()
    static const std::string id("esct");
    return id;

And I'll give sanitize a try.

                Knowledge is Power -- Power Corrupts
                        Study Hard -- Be Evil

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