buggy vfprintf makes printf(1) segfault on freebsd 5.0

[Jim Meyering]

This is probably worth working around.
Maybe it's done already, but currently I've turned
off printf-posix in coreutils:

  freebsd$ ./printf %.2147483647f 1
  Segmentation fault (core dumped)

  freebsd$ gdb --args ./printf %.2147483647f 1
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  This GDB was configured as "i386-unknown-freebsd5.0"...
  (gdb) r
  Starting program: /tmp/coreutils-6.9-365-b00f87/src/printf %.2147483647f 1

  Program received signal SIGSEGV, Segmentation fault.
  0x281ebad3 in __vfprintf () from /usr/lib/libc.so.5
  (gdb) bt
  #0  0x281ebad3 in __vfprintf () from /usr/lib/libc.so.5
  #1  0x281e9709 in __vfprintf () from /usr/lib/libc.so.5
  #2  0x281e8ae6 in vfprintf () from /usr/lib/libc.so.5
  #3  0x2816fd32 in vprintf () from /usr/lib/libc.so.5
  #4  0x0804a336 in xvprintf (format=0x8051030 "%.2147483647Lf",
      args=0xbfbff9f4 "") at xprintf.c:48
  #5  0x0804a392 in xprintf (format=0x8051030 "%.2147483647Lf") at xprintf.c:37
  #6  0x08049b8a in main (argc=1, argv=0xbfbffbc0) at printf.c:461
  (gdb)