Bootstrap failure on solaris2.7 (was: new real.c implementation)

["Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>]

I'm getting another (different) bootstrap failure in stage1 for
sparc-sun-solaris2.7:

 > ./xgcc -B./ -B/usr/local/sparc-sun-solaris2.7/bin/ -isystem
 >   /usr/local/sparc-sun-solaris2.7/include -isystem
 >   /usr/local/sparc-sun-solaris2.7/sys-include -c -o crt1.o -x
 >   assembler-with-cpp
 >   ../../egcc-CVS20020917/gcc/config/sparc/sol2-c1.asm
 > cc1: internal compiler error: in ?, at real.c:1964
 > Please submit a full bug report,
 > with preprocessed source if appropriate.
 > See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
 > make[2]: *** [crt1.o] Error 1
 > make[2]: Leaving directory `/tmp/kg/basel/build/gcc'
 > make[1]: *** [stage1_build] Error 2

This occurs if I use cc for stage1.  If I use gcc, it doesn't fail
but I get comparison differences at the end of the bootstrap.

I ran dbx on the failure above and like the irix6.5 problem, this also
appears to be in startup code.  I was able to reproduce it by
compiling a file containing simply "extern int i;".  Here's the
backtrace:


(/opt/SUNWspro/bin/../WS5.0/bin/sparcv9/dbx) where
  [1] exit(0x1, 0x78634c, 0x7e29b0, 0x0, 0x0, 0x1), at 0xff31a418
=>[2] internal_error(msgid = 0x786454 "in %s, at %s:%d", ...), line  1198 in "diagnostic.c"
  [3] fancy_abort(file = 0x79a5b0 "../../egcc-CVS20020917/gcc/real.c",
  line = 1964, function = 0x79a5d4 "?"), line 1363 in "diagnostic.c"
  [4] real_digit(n = -1), line 1964 in "real.c"
  [5] real_to_decimal(str = 0xffbef280 "", r_orig = 0xffbef2c0, digits  = 8), line 1558 in "real.c"
  [6] builtin_define_with_hex_fp_value(macro = 0xffbef3e4
  "__FLT_MAX__", type = 0x879d00, digits = 9, hex_str = 0xffbef364
  "0x0.ffffffp128", fp_suffix = 0x77d190 "F"), line 5297 in  "c-common.c"
  [7] builtin_define_float_constants(name_prefix = 0x77d18c "FLT",
  fp_suffix = 0x77d190 "F", type = 0x879d00), line 5040 in  "c-common.c"
  [8] cb_register_builtins(pfile = 0x86bb10), line 5125 in  "c-common.c"
  [9] init_builtins(pfile = 0x86bb10), line 750 in "cppinit.c"
  [10] cpp_finish_options(pfile = 0x86bb10), line 1056 in "cppinit.c"
  [11] cpp_preprocess_file(pfile = 0x86bb10, in_fname = 0xffbefbcd
  "/teal/caip5/ghazi/baz.c", out_stream = 0x81f548), line 76 in  "cppmain.c"
  [12] preprocess_file(), line 1411 in "c-opts.c"
  [13] c_common_init(filename = 0xffbefbe5 "baz.i"), line 1434 in  "c-opts.c"
  [14] c_objc_common_init(filename = 0xffbefbe5 "baz.i"), line 231 in  "c-objc-common.c"
  [15] lang_dependent_init(name = 0xffbefbe5 "baz.i"), line 5198 in  "toplev.c"
  [16] do_compile(), line 5333 in "toplev.c"
  [17] toplev_main(argc = 21, argv = 0xffbef93c), line 5364 in  "toplev.c"
  [18] main(argc = 21, argv = 0xffbef93c), line 35 in "main.c"