[Bug lto/47274] [4.6 regression] ICE in lto_varpool_replace_node, at lto-symtab.c:306

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47274

--- Comment #7 from John David Anglin <danglin at gcc dot gnu.org> 2011-01-17 15:42:26 UTC ---
Resolution file is:

3
abs-1.o 3
70 262910e5 PREEMPTED_IR main_test
84 262910e5 PREEMPTED_IR abs
88 262910e5 PREEMPTED_IR abs_called
abs-1-lib.o 3
70 b13b015b PREVAILING_DEF_IRONLY abs
101 b13b015b PREEMPTED_IR inside_main
103 b13b015b PREVAILING_DEF_IRONLY abs_called
main.o 3
70 e5772d37 PREVAILING_DEF main
76 e5772d37 PREVAILING_DEF_IRONLY main_test
79 e5772d37 PREVAILING_DEF_IRONLY inside_main

/tmp/ccJGcG05.lto.o is empty:
dave@gsyprf11:~/gcc-4.6/objdir/gcc/testsuite/gcc$ ls -l /tmp/ccJGcG05.lto.o
-rw------- 1 dave users 0 Jan 17 07:20 /tmp/ccJGcG05.lto.o

Assert fails at this point:

Breakpoint 1, lto_varpool_replace_node (prevailing_node=0x404591c0,
    vnode=0x40459150) at ../../gcc/gcc/lto-symtab.c:306
306           gcc_assert (!vnode->analyzed || prevailing_node->analyzed);
(gdb) p vnode->analyzed
$7 = 1
(gdb) p prevailing_node->analyzed
$8 = 0
(gdb) p *vnode
$9 = {decl = 0x4045a480, next = 0x0, prev = 0x404591c0,
  next_needed = 0x404591f8, prev_needed = 0x0, extra_name = 0x0,
  same_comdat_group = 0x0, ref_list = {references = 0x0, refering = 0xc652e0},
  lto_file_data = 0x4045b000, aux = 0x0, order = 3, resolution = LDPR_UNKNOWN,
  needed = 1, force_output = 0, analyzed = 1, finalized = 1, output = 0,
  externally_visible = 1, alias = 0, used_from_other_partition = 0,
  in_other_partition = 0}
(gdb) p *prevailing_node
$10 = {decl = 0x4045a780, next = 0x40459150, prev = 0x404591f8,
  next_needed = 0x0, prev_needed = 0x0, extra_name = 0x0,
  same_comdat_group = 0x0, ref_list = {references = 0x0, refering = 0xc65be8},
  lto_file_data = 0x4045b0a0, aux = 0x0, order = 8,
  resolution = LDPR_PREVAILING_DEF_IRONLY, needed = 1, force_output = 0,
  analyzed = 0, finalized = 0, output = 0, externally_visible = 0, alias = 0,
  used_from_other_partition = 0, in_other_partition = 0}
(gdb) p debug_tree (vnode->decl)
 <var_decl 0x4045a480 abs_called
    type <integer_type 0x403fc2a0 int public SI
        size <integer_cst 0x403f1270 constant 32>
        unit size <integer_cst 0x403f10a8 constant 4>
        align 32 symtab 0 alias set -1 structural equality precision 32 min
<integer_cst 0x403f1228 -2147483648> max <integer_cst 0x403f1240 2147483647>
        pointer_to_this <pointer_type 0x403fcb40>>
    used public static SI file
/home2/dave/gcc-4.6/gcc/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1.c
line 7 col 5 size <integer_cst 0x403f1270 32> unit size <integer_cst 0x403f10a8
4>
    align 32 context <translation_unit_decl 0x40404700 D.1190> initial
<integer_cst 0x403f1528 0>
    (mem/c/i:SI (symbol_ref:SI ("abs_called") [flags 0x2] <var_decl 0x4045a480
abs_called>) [0 abs_called+0 S4 A32])>
$11 = void
(gdb) p debug_tree (prevailing_node->decl)
 <var_decl 0x4045a780 abs_called
    type <integer_type 0x403fc2a0 int public SI
        size <integer_cst 0x403f1270 constant 32>
        unit size <integer_cst 0x403f10a8 constant 4>
        align 32 symtab 0 alias set -1 structural equality precision 32 min
<integer_cst 0x403f1228 -2147483648> max <integer_cst 0x403f1240 2147483647>
        pointer_to_this <pointer_type 0x403fcb40>>
    used public external common SI file
/home2/dave/gcc-4.6/gcc/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1-lib.c
line 2 col 12 size <integer_cst 0x403f1270 32> unit size <integer_cst
0x403f10a8 4>
    align 32 context <translation_unit_decl 0x40404770 D.1196>>
$12 = void