[File] Detecting PIE binaries

[Christos Zoulas]

The version in HEAD works correctly.

christos

> On Jun 4, 2020, at 4:46 PM, Christos Zoulas <christos at zoulas.com> wrote:
> 
> Signed PGP part
> Yes, and binutils/ld does it... The code in file handles it here: https://github.com/file/file/blob/master/src/readelf.c#L1113 <https://github.com/file/file/blob/master/src/readelf.c#L1113>
> so it looks like it should work. I will wait until I can install a new version of current that has it, but perhaps you can also check
> 
> if the head of file on GitHub fixes the issue?
> 
> 
> 
> christos
> 
> 
> 
>> On Jun 4, 2020, at 10:19 AM, Ed Maste <emaste at freebsd.org <mailto:emaste at freebsd.org>> wrote:
>> 
>> 
>> On Wed, 3 Jun 2020 at 17:42, Christos Zoulas <christos at zoulas.com <mailto:christos at zoulas.com>> wrote:
>> 
>>> 
>>> I don't see it in mine!
>>> 
>>> christos
>>> 
>>> vmb1:~/src/file [5:39pm] 22#cc -pie -fPIE hello.c -o hello
>>> vmb1:~/src/file [5:40pm] 23#readelf -d hello
>>> 
>> ...
>>> vmb1:~/src/file [5:41pm] 24#uname -a
>>> FreeBSD vmb1.astron.com <http://vmb1.astron.com/> 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r361567: Thu May 28 04:59:08 UTC 2020     root at releng1.nyi.freebsd.org <mailto:root at releng1.nyi.freebsd.org>:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64
>> 
>> Oh, I should have included a note that support is very new in FreeBSD:
>> 
>> r361740 lld: Set DF_1_PIE for -pie
>> https://reviews.freebsd.org/rS361740 <https://reviews.freebsd.org/rS361740>
>> 
>> But as I understand it GNU ld has been setting the flag since sometime
>> in 2015, although perhaps only for certain OS targets.
>> 
>> 
> 
> 
> 
> 
> <sanitizer.log>

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