..this is with -current src as of this morning, fresh kernel, and a
userland from the may 12th snapshot:

...on a 'build.sh -t', when src/tools/make/configure is run, it compiles
conftest.c which includes confdefs.h.  It then runs a.out to test output,
which is segfault'ing, and causing configure to fail.


confdefs.h:
#define _PATH_BSHELL "/bin/sh"
#define _PATH_DEFSHELLDIR "/bin"

conftest.c:
#line 1295 "configure"
#include "confdefs.h"

int
main ()
{

  ;
  return 0;
}

...and a ktruss of the binary:

$ ktruss ./a.out
                                                   = 0
  2894 ktruss   emul(netbsd)
  2894 ktruss   "/usr/libexec/ld.elf_so"           JUSTRETURN
  2894 a.out    emul(netbsd)
  2894 a.out    __sysctl(0xffffffffffffcbb0, 0x2, 0x4030cf18,
0xffffffffffffcba8, 0, 0) = 0
  2894 a.out    mmap(0, 0x8000, 0x3, 0x1002, 0xffffffffffffffff, 0, 0) =
1075888128
  2894 a.out    geteuid                            = 1000
  2894 a.out    getuid                             = 1000
  2894 a.out    getegid                            = 100
  2894 a.out    getgid                             = 100
  2894 a.out    open("/etc/ld.so.conf", 0, 0xffffffffffffd5fe) Err#2
ENOENT
  2894 a.out    __stat13("/usr/pkg/lib/libc.so.12", 0xffffffffffffce30)
Err#2 ENOENT
  2894 a.out    __stat13("/usr/lib/libc.so.12", 0xffffffffffffce30) = 0
  2894 a.out    open("/usr/lib/libc.so.12", 0, 0x4030cc78) = 3
  2894 a.out    read(0x3, 0xffffffffffffcdf0, 0x40) = 64

"\^?ELF\^B\^B\^A\0\0\0\0\0\0\0\0\0\0\^C\0+\0\0\0\^A\0\0\0\0\0\^B\M-3"
  2894 a.out    close(0x3)                         = 0
  2894 a.out    open("/usr/lib/libc.so.12", 0, 0x4020e0a0) = 3
  2894 a.out    __fstat13(0x3, 0xffffffffffffcfb0) = 0
  2894 a.out    read(0x3, 0xffffffffffffaed0, 0x2000) = 8192
  2894 a.out    mmap(0, 0x1d6000, 0x5, 0x2, 0x3, 0, 0) = 1076953088
  2894 a.out    mmap(0x404c8000, 0x10000, 0x7, 0x12, 0x3, 0, 0xb8000) =
1078755328
  2894 a.out    mmap(0x404d8000, 0xe000, 0x7, 0x1012, 0xffffffffffffffff,
0, 0) = 1078820864
  2894 a.out    munmap(0x403ca000, 0xfe000)        = 0
  2894 a.out    close(0x3)                         = 0
SIGSEGV SIG_DFL

...the irony is, I'm able to compile a kernel just fine using the same GCC
binary.  Should I go ahead and just install another snapshot from
releng.netbsd.org?

-lava