Trying to build
ftp://catless.ncl.ac.uk/pub/zircon-1.18.213-1.src.rpm I got
a seg fault with rpm.  But just once.  Redoing the same
thing just after that gave me a tcl error...  GDB said:

Executing: %build
+ umask 022
+ cd /usr/src/redhat/BUILD
+ cd zircon-1.18.213
+ tclsh8.0 installer/install.tcl -l /usr/lib/zircon -b
/usr/bin/ -g
+ exit 0
Processing files: zircon

Program received signal SIGSEGV, Segmentation fault.
strcpy (dest=0xbfff5db8 "on-1.18.213.tar.gz", src=0x0) at
../sysdeps/generic/strcpy.c:37
37      ../sysdeps/generic/strcpy.c: Aucun fichier ou
ripertoire de ce type.
(gdb) where
#0  strcpy (dest=0xbfff5db8 "on-1.18.213.tar.gz", src=0x0)
at ../sysdeps/generic/strcpy.c:37
#1  0x8073fb1 in rpmGetPath ()
#2  0x805648c in processPackageFiles ()
#3  0x80578b5 in processBinaryFiles ()
#4  0x80541e3 in buildSpec ()
#5  0x8054135 in buildSpec ()
#6  0x8048862 in buildForTarget ()
#7  0x80488e2 in build ()
#8  0x8052091 in main ()
#9  0x8090e4d in __libc_start_main (main=0x804f84c <main>,
argc=3, argv=0xbffff164, init=0x80480b4 <_init>,
fini=0x80d876c <_fini>,
    rtld_fini=0, stack_end=0xbffff15c) at
../sysdeps/generic/libc-start.c:78