ying lcs wrote: > And when I compile the same code in Ubuntu 8.04. It works. But now I > do that in Ubuntu 8.10. I get this error: The difference is due to 8.10 adding -D_FORTIFY_SOURCE=2 to the default CFLAGS which enables extra compile-time and run-time checking above and beyond what is normal. See <https://wiki.ubuntu.com/CompilerFlags#-D_FORTIFY_SOURCE=2>. So the only reason you didn't see it before was not because there did not exist a (potential) problem but only because this extra level of checking wasn't enabled. The runtime abort may be a false positive, or it may be indicative of a real bug. From your backtrace it is the checked replacement version of realpath() that is causing the abort, which probably means that the code in question in XPCOMGlueLoad() is passing a buffer that's too small as the second argument to the call to realpath. Either fix the call or turn down the checking level to 1 or 0. Brian
