SA on linux-32bit can not open core files larger than 2GB in size. With LIBSAPROC_DEBUG=1, it fails with:

libsaproc DEBUG: base = 0xffe0e000 size = 90112
libsaproc DEBUG: base = 0xffe24000 size = 1048576
libsaproc DEBUG: base = 0xffffe000 size = 4096
libsaproc DEBUG: core read failed for 4 byte(s) @ 0xf77c08f0 (4 more bytes)
libsaproc DEBUG: can't read first link map address
Unable to open core file