[Bug tree-optimization/50389] New: [4.7 Regression] ICE: in execute_todo, at passes.c:1730 with -O -freorder-blocks -ftracer testcase.c and __builtin___memcpy_chk()

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50389

             Bug #: 50389
           Summary: [4.7 Regression] ICE: in execute_todo, at
                    passes.c:1730 with -O -freorder-blocks -ftracer
                    testcase.c and __builtin___memcpy_chk()
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 25265
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25265
reduced testcase

Compiler output:
$ gcc -O -freorder-blocks -ftracer testcase.c
testcase.c: In function 'foo':
testcase.c:4:6: internal compiler error: in execute_todo, at passes.c:1730
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

(gdb) bt
#0  fancy_abort (file=0x128d838 "/mnt/svn/gcc-trunk/gcc/passes.c", line=1730,
function=0x128dde9 "execute_todo")
    at /mnt/svn/gcc-trunk/gcc/diagnostic.c:892
#1  0x00000000008e316d in execute_todo (flags=32768) at
/mnt/svn/gcc-trunk/gcc/passes.c:1730
#2  0x00000000008e629a in execute_one_pass (pass=0x17b9280) at
/mnt/svn/gcc-trunk/gcc/passes.c:2086
#3  0x00000000008e6595 in execute_pass_list (pass=0x17b9280) at
/mnt/svn/gcc-trunk/gcc/passes.c:2118
#4  0x0000000000a3f2ce in tree_rest_of_compilation (fndecl=0x7ffff5687a00) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:420
#5  0x00000000006955a6 in cgraph_expand_function (node=0x7ffff7ed2480) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1797
#6  0x000000000069721b in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1856
#7  cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:2126
#8  0x00000000006978aa in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1310
#9  0x00000000005783a8 in c_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/c-decl.c:9922
#10 0x00000000009dd0d2 in compile_file (argc=15, argv=0x7fffffffdaf8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:564
#11 do_compile (argc=15, argv=0x7fffffffdaf8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1886
#12 toplev_main (argc=15, argv=0x7fffffffdaf8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1962
#13 0x00007ffff6178d2d in __libc_start_main () from /lib64/libc.so.6
#14 0x000000000055bda9 in _start ()

Tested revisions:
r178803 - crash
r178555 - crash
r178508 - OK
4.6 r177922 - OK