Edit report at https://bugs.php.net/bug.php?id=77284&edit=1
ID: 77284
Updated by: cmb@php.net
Reported by: anubas at hotmail dot com
Summary: base64
-Status: Assigned
+Status: Verified
Type: Bug
Package: *URL Functions
Operating System: FreeBSD 11.2-RELEASE-p5
PHP Version: 7.3.0
Assigned To: laruence
Block user comment: N
Private report: N
New Comment:
I can reproduce this issue on an AMD 64 supporting SSSE3, but not
AVX2, running a Vagrant bento/freebsd-11.2[1].
resolve_base64_encode() returns php_base64_encode_ssse3()[2], but
setting a breakpoint for this function is somehow ignored.
[1] <https://app.vagrantup.com/bento/boxes/freebsd-11.2>
[2] <https://github.com/php/php-src/blob/php-7.3.0/ext/standard/base64.c#L431>
Previous Comments:
------------------------------------------------------------------------
[2018-12-12 09:52:05] sjon at hortensius dot net
This can be reproduced pretty quickly in a qemu-vm - I downloaded http://ftp.nl.freebsd.org/releases/VM-IMAGES/11.2-RELEASE/amd64/Latest/FreeBSD-11.2-RELEASE-amd64.qcow2.xz,
uncompressed and logged in with root and ran:
# portsnap fetch extract && cd /usr/ports/lang/php73 && make install
(select debug build, accept defaults for the rest
This will get you a debug php73 build which shows the same behavior
------------------------------------------------------------------------
[2018-12-11 22:12:28] nikic@php.net
Also bug #77279 looks very related. In both cases we have a SIMD optimized function with FreeBSD as
the operating system. Likely the same root cause.
------------------------------------------------------------------------
[2018-12-11 22:11:21] nikic@php.net
Thanks, that should put you on the SSSE3 implementation. I just tried to force it locally, and
it's working fine for me.
Not sure what could be the issue here, maybe laruence has an idea?
------------------------------------------------------------------------
[2018-12-11 21:53:41] anubas at hotmail dot com
I pulled the following out of the system dmesg output:
CPU: Intel(R) Xeon(R) CPU E5-2630 v2 @ 2.60GHz (2600.00-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x306e4 Family=0x6 Model=0x3e Stepping=4
Features=0xfa3fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,DTS,MMX,FXSR,SSE,SSE2,SS>
Features2=0xffba2203<SSE3,PCLMULQDQ,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND,HV>
AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
AMD Features2=0x1<LAHF>
Structured Extended Features=0x283<FSGSBASE,TSCADJ,SMEP,ERMS>
TSC: P-state invariant
------------------------------------------------------------------------
[2018-12-11 21:41:20] nikic@php.net
Base64 encoding has SIMD based implementations in 7.3, so this issue might be architecture
dependent. Can you please tell me which SIMD extensions your CPU supports? In particular AVX2 and
SSSE3 support would be relevant.
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
https://bugs.php.net/bug.php?id=77284
--
Edit this bug report at https://bugs.php.net/bug.php?id=77284&edit=1