Date: Sat, 19 Mar 2005 12:26:49 -0800 From: jtc@acorntoolworks.com (J.T. Conklin) To: freebsd-questions@freebsd.org Subject: FreeBSD equivalent for SEGV_MAPERR? Message-ID: <87k6o3756e.fsf@orac.acorntoolworks.com>
next in thread | raw e-mail | index | archive | help
I'm working on autoconf support for ACE (A C++ framework) and TAO (Real-time CORBA ORB). The resulting configuration is failing for FreeBSD, something I'd like before the upcoming ACE/TAO release. I downloaded FreeBSD 5.3 and installed it under vmware to reproduce (and hopefully fix) this problem. The configure script detects that FreeBSD supports SA_SIGINFO, the siginfo_t struct, and the fact siginfo_t has a si_addr field so it enables code to check for segmentation errors in the shared memory pool class. But that fails to compile due to the lack of a SEGV_MAPERR macro. The code in question is: else if (!(siginfo->si_code == SEGV_MAPERR && siginfo->si_addr < (((char *) this->base_addr_) + offset) && siginfo->si_addr >= ((char *) this->base_addr_))) ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) address %u out of range\n", siginfo->si_addr), -1); I wrote a little test program to force a SIGSEGV, and si_addr seems to have the correct value. But I don't know what macro/constant I should be checking si_code against. --jtc -- J.T. Conklin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?87k6o3756e.fsf>