[PATCH v2] ldd: revise trace output for left-aligned relative addresses

[Zack Weinberg]

On Tue, Oct 6, 2020 at 7:57 PM Michael Clark via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> This change updates ld.so trace for left-aligned relative addresses.
> The primary goal of this change is to increase `ldd` readability by:
>
>  - modifying trace output to use relative addresses by default.
>  - adding an alternative trace output mode with left-aligned addresses.

I don't have an opinion on most of the patch, but I find the term
"left-aligned addresses" very confusing -- in fact, on a first read I
thought your patch did exactly the opposite of what it does. I'd
describe the effect of LD_TRACE_ADDR_ALIGN=1 as "move load addresses
from the end of the line to the beginning, and pad them with leading
zeroes to a fixed width." Possibly the environment variable should be
renamed to match.

zw