infloop compiling compile/921206-1.c on i386-pc-solaris2.5.1

[Jim Meyering]

I configured with --with-gnu-as and bootstrapped with BOOT_CFLAGS=-O3
on a i386-pc-solaris2.5.1

That test fails with signal 11 when run using -O2 and a compiler updated
on 980930-17h37(central TZ, aka -5:00).

Repeating with a compiler updated only 4 hours later (on 980930-21h43),
cc1 infloops.  When I interrupted it, the process size was about 60MB.

  $ gcc -g -O -c gcc/testsuite/gcc.c-torture/compile/921206-1.c
  $ gcc -g -O2 -c gcc/testsuite/gcc.c-torture/compile/921206-1.c
  gcc: Internal compiler error: program cc1 got fatal signal 11
  [Exit 1]
  $ gcc -v
  Reading specs from /p/p/egcs-980930-17h37/lib/gcc-lib/i386-pc-solaris2.5.1/egcs-2.92.11/specs
  gcc version egcs-2.92.11 19980930 (gcc2 ss-980609 experimental)


Here's the excerpt from the test log:

  FAIL: gcc.c-torture/compile/921206-1.c,  -O2 -g
  got a INT signal, interrupted by user