Re: snprintf defined as ap_php_snprintf

Hello Jeff, Thursday, February 3, 2005, 11:18:40 PM, you wrote: > On Thu, 3 Feb 2005, Derick Rethans wrote: >> > > > Is this a deliberate change? Is there some way to tell configure to >> > > > use the system snprintf instead of the PHP version? >> > > >> > > You should always been using the ap_php_snprintf() one as that has an >> > > extra modified %F for non-locale aware number formatting. To make your >> > > extension work, make sure to include main/snprintf.h. >> > >> > I'm afraid I might not have been clear. In 4.3.10, php.h includes >> > snprintf.h, which defines snprintf as ap_php_snprintf. Unfortunately, >> > ap_php_snprintf is failing, causing the module to crash. If I force it >> to >> > use glibc's snprintf, everything works fine. Unfortunately, >> ap_php_snprintf >> > isn't an option right now, and I'm wondering what is the cleanest way to >> > insure that the system snprintf is used. >> >> You can't do that actually. > Is it necessary to override the system snprintf? This is a potential trap > for the unwary programmer. It took us a fair amount of digging to discover > that this was happening. I haven't found any documentation that warns that > snprintf might behave differently then one is used to. >> What fails in ap_php_snprintf? We need to >> fix that instead. > I'm afraid I've not been able to pin-point the problem more then that. The > target is an embedded system with limited memory, so debugging can be a > challenge at times. Looking at my original message, I realize that I forgot > to mention that the crash occurs only in mod_php, not the stand alone > excutable of php. >> (And always CC the mailinglist). > Ack, sorry about that. > Thanks, Well the problem is thatlots of systems are provide c libs that have very big memory problems that result in hige security risks or are simply not conforming to ISOc99 standatd which we require. One of the biggest problems is [v][s|f][n]printf() since we are focused on outputting something. -- Best regards, Marcus mailto:helly@php.net