Bug#343511: g++-3.4 -O1: wrong code generation

[Falk Hueffner <falk@debian.org>]

Bill Allombert <ballombe@debian.org> writes:

> Package: g++-3.4
> Version: 3.4.5-1
> Severity: normal
>
> Hello Debian GCC maintainers,
>
> g++-3.4 incorrectly compiles the attached file at -O1 and up by causing
> an infinite loop.

This reduces to:

__attribute__ ((pure)) inline long f(void) {
    return 0;
}

void __attribute__ ((noinline)) g(long *e)
{    
    e[f()] += 1;
}

int main(void)
{
    long e[163];
    g(e);

    return 0;
}

which looks to be the same problem as this:

http://gcc.gnu.org/PR17972

so unfortunately, it looks like this won't be fixed upstream. It looks
pretty nasty, though, maybe we should ask again.

-- 
	Falk