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Re: [Mingw-cross-env-list] stack smashing on i686 with -O3 since da82d07

From: Tony Theodore
Subject: Re: [Mingw-cross-env-list] stack smashing on i686 with -O3 since da82d07dbe
Date: Sun, 25 Oct 2015 22:13:09 +1100

> On 25 Oct 2015, at 20:43, Moritz Bunkus <address@hidden> wrote:
> I'm not exactly sure what to do. As the program doesn't even reach main
> (gdb, put breakpoint on main, run, crash happens before breakpoint is
> reached)

Try a different program, `mkvinfo.exe` has nothing helpful before the
crash, but `mkvextract.exe` has some things that might be useful. The
first step is some unwinding - bizarrely sjlj (which I thought was

Getting to the limit of my skills here, explicitly disabling sjlj in
gcc causes `mkvextract.exe` to crash immediately. Something is likely
throwing an uncaught exception before main.



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