[Bug middle-end/38459] New: [graphite] SEGFAULT in cloog_clast_create

[grosser at gcc dot gnu dot org]

In the current graphite branch we fail with a SEGFAULT.

#0  0x28ed1fb1 in _malloc_prefork () from /lib/libc.so.7
#1  0x28ed6f45 in realloc () from /lib/libc.so.7
#2  0x28c9d019 in __gmp_default_reallocate () from /usr/local/lib/libgmp.so.7
#3  0x28cb0a4e in __gmpz_realloc () from /usr/local/lib/libgmp.so.7
#4  0x28cb14ce in __gmpz_set () from /usr/local/lib/libgmp.so.7
#5  0x28ce44ec in insert_loop (loop=0x291b56e0, level=4, scalar=0,
next=0xbfbfe7f0, infos=0x291b53c0)
    at source/ppl/clast.c:1446
#6  0x28ce46fd in insert_loop (loop=0x291b5340, level=3, scalar=0,
next=0xbfbfe7f0, infos=0x291b53c0)
    at source/ppl/clast.c:1480
#7  0x28ce46fd in insert_loop (loop=0x291b53e0, level=2, scalar=0,
next=0xbfbfe7f0, infos=0x291b53c0)
    at source/ppl/clast.c:1480
#8  0x28ce46fd in insert_loop (loop=0x291b5360, level=1, scalar=0,
next=0xbfbfe7f0, infos=0x291b53c0)
    at source/ppl/clast.c:1480
#9  0x28ce492f in cloog_clast_create (program=0x2910bfe0, options=0x2916f1c0)
at source/ppl/clast.c:1518
#10 0x08a15cf2 in find_transform (scop=0x29132310) at
../../../git/gcc/graphite.c:4238
#11 0x08a189a8 in graphite_transform_loops () at
../../../git/gcc/graphite.c:5386

It seems we do not initialize the cloog data structures correct or there is a
bug in cloog.


-- 
           Summary: [graphite] SEGFAULT in cloog_clast_create
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: grosser at gcc dot gnu dot org
        ReportedBy: grosser at gcc dot gnu dot org
OtherBugsDependingO 37894
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38459