[Bug lto/44950] New: dwarf2out ICE with WHOPR build of mozilla

[Bug lto/44950] New: dwarf2out ICE with WHOPR build of mozilla

[hubicka at gcc dot gnu dot org]

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jh@evans:/abuild/jh/build-mozilla-debug/js/src/shell>
/abuild/jh/trunk-install/bin/g++ -fwhopr=24 -fuse-linker-plugin  -fpermissive
-o js.o -c  -I../../../dist/system_wrappers_js -include
/abuild/jh/mozilla-central/js/src/config/gcc_hidden.h -DEXPORT_JS_API
-DOSTYPE=\"Linux2.6.32.12-0\" -DOSARCH=Linux
-I/abuild/jh/mozilla-central/js/src -I..
-I/abuild/jh/mozilla-central/js/src/shell -I. -I../../../dist/include
-I../../../dist/include/nsprpub 
-I/abuild/jh/build-mozilla-debug/dist/include/nspr    -fPIC  -fno-rtti
-fno-exceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth
-Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof
-Wno-variadic-macros -pedantic -Wno-long-long -fno-strict-aliasing -pthread
-pipe  -DNDEBUG -DTRIMMED -g -Os -freorder-blocks -fno-reorder-functions
-fomit-frame-pointer    -DMOZILLA_CLIENT -include ../js-confdefs.h -MD -MF
.deps/js.pp /abuild/jh/mozilla-central/js/src/shell/js.cpp -E >js.ii
jh@evans:/abuild/jh/build-mozilla-debug/js/src/shell>
/abuild/jh/trunk-install/bin/g++ -fwhopr=24 -fuse-linker-plugin -r -nostdlib
js.ii -g
jh@evans:/abuild/jh/build-mozilla-debug/js/src/shell> mv js.o js.ii
jh@evans:/abuild/jh/build-mozilla-debug/js/src/shell>
/abuild/jh/trunk-install/bin/g++ -fwhopr=24 -fuse-linker-plugin -r -nostdlib
js.ii -g
In file included from /abuild/jh/mozilla-central/js/src/shell/js.cpp:61:0:
/abuild/jh/mozilla-central/js/src/jscntxt.h: In function ‘JSContext*
js_ContextFromLinkField(JSCList*)’:
/abuild/jh/mozilla-central/js/src/jscntxt.h:2704:75: warning: invalid access to
non-static data member ‘JSContext::link’  of NULL object [-Winvalid-offsetof]
/abuild/jh/mozilla-central/js/src/jscntxt.h:2704:75: warning: (perhaps the
‘offsetof’ macro was used incorrectly) [-Winvalid-offsetof]
lto1: internal compiler error: in dwarf2out_finish, at dwarf2out.c:22272
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [/abuild/jh/tmp/ccRqAsbV.ltrans0.ltrans.o] Error 1
lto-wrapper: make returned 2 exit status


-- 
           Summary: dwarf2out ICE with WHOPR build of mozilla
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hubicka at gcc dot gnu dot org
 GCC build triplet: x86_64-linux
  GCC host triplet: x86_64-linux
GCC target triplet: x86_64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950

[Bug lto/44950] dwarf2out ICE with WHOPR build of mozilla

[hubicka at gcc dot gnu dot org]

------- Comment #1 from hubicka at gcc dot gnu dot org  2010-07-15 15:22 -------
Created an attachment (id=21212)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21212&action=view)
testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950

[Bug lto/44950] dwarf2out ICE with WHOPR build of mozilla

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2010-07-23 10:25 -------
Reduced testcase:

struct JSContext;
struct JSObject;
class WorkerHooks {
    virtual JSObject *newGlobalObject(JSContext *cx) = 0;
};
int
shell(JSContext *cx, int argc, char **argv, char **envp)
{
  class ShellWorkerHooks : public WorkerHooks {
      JSObject *newGlobalObject(JSContext *cx) { }
  };
  ShellWorkerHooks hooks;
}

> ./g++ -B. -flto -r -nostdlib -g js.3.ii
lto1: internal compiler error: in dwarf2out_finish, at dwarf2out.c:22271
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: ./g++ returned 1 exit status
collect2: lto-wrapper returned 1 exit status

#1  0x00000000005d46a8 in dwarf2out_finish (filename=0x1664040 "js.3.o")
    at /space/rguenther/src/svn/trunk/gcc/dwarf2out.c:22269
22269                 gcc_assert (context
22270                             && (TREE_CODE (context) == FUNCTION_DECL
22271                                 || TREE_CODE (context) ==
NAMESPACE_DECL));
(gdb) p context->base.code
$2 = RECORD_TYPE

(gdb) call debug_generic_expr (node->created_for)
__base_ctor

(for ShellWorkerHooks)


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rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-23 10:25:17
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950

[Bug lto/44950] dwarf2out ICE with WHOPR build of mozilla

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2010-07-23 18:24 -------
Without LTO the limbo DIE has a non-NULL get_AT_ref (die,
DW_AT_abstract_origin),
a DW_TAG_subprogram.  For some reason that doesn't get created with LTO
(not easy to follow why).

More reduced testcase:

struct Base { ~Base (); };
void fun(void) { struct Deriv : Base { } x; }


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950

[Bug lto/44950] ICE in dwarf2out_finish, at dwarf2out.c:22271

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-07-23 18:51 -------
*** Bug 43898 has been marked as a duplicate of this bug. ***


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |max at duempel dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950

[Bug lto/44950] ICE in dwarf2out_finish, at dwarf2out.c:22271

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2010-07-23 18:53 -------
Similar testcase from PR43898:

 void bug() {
   struct Class {
     Class(int a) {}
     virtual void f() {}
   };
   Class a(0);
 }


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44950