zend gdb detection fix on FreeBSD.

[devnexen]

No description provided.

[devnexen]

any chance it lands for the next 8.x releases otherwise ? :-)

[cmb69]

There are still more than two weeks till PHP 8.0.15RC1 will be tagged, so no need to hurry. :)

I cannot really comment on the patch, besides that I believe it to be good. Maybe the 8.0 RMs want to have a look; @sgolemon, @carusogabriel, what do you think?

[carusogabriel]

@devnexen Would you explain to me this patch like I'm 5-years old, please?

It looks to me that this is making it possible to detect GDB on FreeBSD, but if you could elaborate a little bit more, we can have this on PHP 8.0, no problems!

Also, would this affect end users or only core contributors?

[devnexen]

the actual code path is only fully valid on linux because :

• while procfs is supported in some oses outside of linux, they do not store necessarily the infos in the same way (e.g. files are in binary format in solaris) nor the same amount (e.g. on netbsd there is no TracerPid "field").
• procfs is only optional on freebsd, off by default, and only really useful when running the linux abi compatibility layer.

Thankfully there is native platform means to achieve the same goal, like the kinfo_file data, supported by BSD in general. So yes it is possible to detect GDB on these ;-) here I focused on FreeBSD only tough and at least that s a os ran in CI.

[cmb69]

Also, would this affect end users or only core contributors?

This is only for C developers, and mainly or even exclusively for JIT debugging.

[krakjoe]

Merged as 898da7b