[Bug ada/57187] New: [4.9 regression] Ada bootstrap broken on Solaris/SPARC: ICE in check_probability, at basic-block.h:941

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57187

             Bug #: 57187
           Summary: [4.9 regression] Ada bootstrap broken on
                    Solaris/SPARC: ICE in check_probability, at
                    basic-block.h:941
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ro@gcc.gnu.org
                CC: ebotcazou@gcc.gnu.org


Within the last week (between revs 198340 and 198578), Ada bootstrap on
Solaris/SPARC got broken: in Stage 2 I get

+===========================GNAT BUG DETECTED==============================+
| 4.9.0 20130503 (experimental) [trunk revision 198578] (sparc-sun-solaris2.11)
GCC error:|
| in check_probability, at basic-block.h:941                               |
| Error detected around
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_util.adb:2739:8|
| Please submit a bug report; see http://gcc.gnu.org/bugs.html.            |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact gcc or gnatmake command that you entered.              |
| Also include sources listed below in gnatchop format                     |
| (concatenated together with no headers between files).                   |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases,
so please double check that the problem can still
be reproduced with the set of files listed.
Consider also -gnatd.n switch (see debug.adb).

/vol/gcc/src/hg/trunk/local/gcc/ada/system.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_util.adb
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_util.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/einfo.ads
ada/snames.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/namet.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/alloc.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/table.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/types.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/unchconv.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/unchdeal.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/hostparm.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/uintp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/urealp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_tss.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/atree.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sinfo.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/casing.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/checks.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/debug.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/errout.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/err_vars.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/erroutc.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/elists.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_ch11.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_disp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_ch11.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_disp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/exp_util.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/rtsfind.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/fname.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/freeze.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/lib.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/lib-xref.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/lib-util.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/put_spark_xrefs.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/namet-sp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/nlists.ads
ada/nmake.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/output.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-os_lib.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-string.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/ada.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/a-uncdea.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/opt.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-wchcon.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/restrict.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/rident.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-rident.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/rident.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-rident.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_aux.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_attr.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_ch8.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_disp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_eval.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_res.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_type.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/sinput.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/stand.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/style.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/styleg.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/stringt.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/targparm.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/tbuild.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/ttypes.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/get_targ.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/set_targ.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/uname.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/gnat.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/g-htable.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/gnat.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/g-htable.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-htable.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-exctab.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-stalib.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/a-unccon.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-unstyp.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-assert.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-secsta.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-stoele.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-stoele.adb
/vol/gcc/src/hg/trunk/local/gcc/ada/a-except.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-parame.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-traent.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-soflin.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-stache.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/atree.adb
/vol/gcc/src/hg/trunk/local/gcc/ada/aspects.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/tree_io.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-imenne.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-htable.adb
/vol/gcc/src/hg/trunk/local/gcc/ada/s-strhas.ads
/vol/gcc/src/hg/trunk/local/gcc/ada/s-strhas.ads


raised TYPES.UNRECOVERABLE_ERROR : comperr.adb:432
make[3]: *** [ada/sem_util.o] Error 1

Manually invoking gnat1 under gdb:

gnat1 -I - -I . -I ada -I /vol/gcc/src/hg/trunk/local/gcc/ada -I
/vol/gcc/src/hg/trunk/local/gcc/ada/gcc-interface -gnatwa -quiet -nostdinc
-dumpbase sem_util.adb -auxbase-strip ada/sem_util.o -O2 -Wextra -Wall -g
-gtoggle -gnatpg -gnata -mcpu=v9 -gnatO ada/sem_util.o
/vol/gcc/src/hg/trunk/local/gcc/ada/sem_util.adb -o sem_util.s

I find:

(gdb) up
#1  0x00f673a0 in check_probability (prob=10001)
    at /vol/gcc/src/hg/trunk/local/gcc/basic-block.h:941
941       gcc_checking_assert (prob >= 0 && prob <= REG_BR_PROB_BASE);

I'll start a reghunt unless someone immediately sees what's wrong.

  Rainer