Bug 14260

Summary:	mod_php 4.3.0-r2 segfaults randomly unless compiled without optimizations
Product:	Gentoo Linux	Reporter:	Matt <matthew>
Component:	[OLD] Server	Assignee:	Ryan Phillips (RETIRED) <rphillips>
Status:	RESOLVED REMIND
Severity:	normal
Priority:	High
Version:	1.4_rc2
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Matt 2003-01-20 16:34:57 UTC

I have a complex php web app that on the larger pages will randomly segfault. 
My memory operates in ECC Scrub mode and memtest showed no problems on this
machine before it was put in production.  CPU's operate cool (for athlons), so
heat isn't likely a problem.

I finally was able to get it to be reliable after trying -O3 through -O1 and
finally just compiling with "-march=athlon-mp -pipe"

Not sure why it's so unstable on this platform, or if anything can be done about
it but it might help someone who finds this bug to figure out how to make it
work.  (dual athlon mp 2000+ 1gb ECC RAM)

Comment 1 Ryan Phillips (RETIRED) gentoo-dev

2003-02-07 16:32:37 UTC

Not all optimizations are stable on certain platforms, and there is no real way to check.... Be careful on the CFLAGS used when compiling software.