x86 relr memory leaks

[Nick Alcock]

On 11 Feb 2025, Alan Modra verbalised:

> On Mon, Feb 10, 2025 at 03:30:34PM +0000, Nick Alcock wrote:
>> (It turns out I am already testing with the sanitizer flags in question.
>> Not sure why the leaks didn't show up...)
>
> ASAN_OPTIONS with detect_leaks=0 in environment?

Yep. I see only one leak, with no useful stacktrace, and it's not any of
the ones you're seeing.

... oh dammit, no, I'm using detect_leaks=0 only. That would explain
that! Fixed.

>> binutils/
>> 	* objdump.c (dump_ctf): Close dict.
>> 	* readelf.c (dump_section_as_ctf): Likewise.
>
> With this applied I'm still seeing leaks.  eg.

Rrg I don't see that one either! But I can still fix it :) will submit a
new series for leak fixes etc.

(This is actually not a leak, it's *incorrect output* because we're
generating a string for dumping and then never appending it to the dump
buffer. Whoops!)

Thanks for all this!