[Bug middle-end/39927] [4.5 Regression]: build breakage for cris-elf building libstdc++-v3

[hp at gcc dot gnu dot org]

------- Comment #9 from hp at gcc dot gnu dot org  2009-04-28 01:59 -------
GDB backtrace for comment #8, after rm *.o; make all-gcc CFLAGS=-g:

#0  fancy_abort (file=0xd77ded "/tmp/buildice5/gcc/gcc/expr.c", line=3387,
function=0xd78201 "emit_move_insn")
    at /tmp/buildice5/gcc/gcc/diagnostic.c:724
#1  0x00000000006721d6 in emit_move_insn (x=0x2aaaaabbfb00, y=0x2aaaaabbfc40)
at /tmp/buildice5/gcc/gcc/expr.c:3386
#2  0x0000000000c9f5ac in insert_partition_copy_on_edge (e=0x2aaaaaaada00,
dest=0, src=1)
    at /tmp/buildice5/gcc/gcc/tree-outof-ssa.c:155
#3  0x0000000000ca0d8d in elim_create (g=0x11a3590, T=0) at
/tmp/buildice5/gcc/gcc/tree-outof-ssa.c:542
#4  0x0000000000ca126f in eliminate_phi (e=0x2aaaaaaada00, g=0x11a3590) at
/tmp/buildice5/gcc/gcc/tree-outof-ssa.c:583
#5  0x0000000000ca1f51 in expand_phi_nodes (sa=0x115b520) at
/tmp/buildice5/gcc/gcc/tree-outof-ssa.c:756
#6  0x0000000000c125c2 in gimple_expand_cfg () at
/tmp/buildice5/gcc/gcc/cfgexpand.c:2507
#7  0x000000000085f950 in execute_one_pass (pass=0x111baa0) at
/tmp/buildice5/gcc/gcc/passes.c:1286
#8  0x000000000085fb99 in execute_pass_list (pass=0x111baa0) at
/tmp/buildice5/gcc/gcc/passes.c:1335
#9  0x00000000009a1eb7 in tree_rest_of_compilation (fndecl=0x2aaaaabbd100)
    at /tmp/buildice5/gcc/gcc/tree-optimize.c:394
#10 0x0000000000b81c72 in cgraph_expand_function (node=0x2aaaaabbd600) at
/tmp/buildice5/gcc/gcc/cgraphunit.c:1051
#11 0x0000000000b81e25 in cgraph_expand_all_functions () at
/tmp/buildice5/gcc/gcc/cgraphunit.c:1110
#12 0x0000000000b823ee in cgraph_optimize () at
/tmp/buildice5/gcc/gcc/cgraphunit.c:1324
#13 0x00000000004873be in c_write_global_declarations () at
/tmp/buildice5/gcc/gcc/c-decl.c:8306
#14 0x0000000000927838 in compile_file () at
/tmp/buildice5/gcc/gcc/toplev.c:988
#15 0x0000000000929709 in do_compile () at /tmp/buildice5/gcc/gcc/toplev.c:2248
#16 0x00000000009297c9 in toplev_main (argc=14, argv=0x7fffaaa06e58) at
/tmp/buildice5/gcc/gcc/toplev.c:2293
#17 0x0000000000538b3f in main (argc=14, argv=0x7fffaaa06e58) at
/tmp/buildice5/gcc/gcc/main.c:35
(gdb) up
#1  0x00000000006721d6 in emit_move_insn (x=0x2aaaaabbfb00, y=0x2aaaaabbfc40)
at /tmp/buildice5/gcc/gcc/expr.c:3386
3386      gcc_assert (mode != BLKmode
(gdb) p x
$1 = (rtx) 0x2aaaaabbfb00
(gdb) pr
(reg/v:QI 25 [ a ])
(gdb) p y
$2 = (rtx) 0x2aaaaabbfc40
(gdb) pr
(reg/v:SI 31 [ b ])

(the test-case is already as reduced as they get)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39927