[Bug target/59492] [4.9 Regression] bootstrap failure on x32 when configured with --enable-libstdcxx-debug

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59492

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-6 gcc]$ cat /tmp/x.cc
void
__throw_runtime_error(const char*) __attribute__((__noreturn__));
unsigned int
__attribute__ ((target("rdrnd")))
__x86_rdrand(void)
{
  unsigned int retries = 100;
  unsigned int val;
  while (__builtin_ia32_rdrand32_step(&val) == 0)
    if (--retries == 0)
      __throw_runtime_error(("random_device::__x86_rdrand(void)"));
  return val;
}
[hjl@gnu-6 gcc]$ ./xgcc -B./ -c -g  -mx32 /tmp/x.cc -std=gnu++11  -fPIC     
/tmp/ccTJs5Yu.s: Assembler messages:
/tmp/ccTJs5Yu.s: Error: cannot represent relocation type BFD_RELOC_64_PCREL in
x32 mode
/tmp/ccTJs5Yu.s: Error: cannot represent relocation type BFD_RELOC_64_PCREL in
x32 mode
[hjl@gnu-6 gcc]$