[Mono-bugs] [Bug 567050] New: abort in compute_class_bitmap (field->offset) while JITting a verified method

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=567050

http://bugzilla.novell.com/show_bug.cgi?id=567050#c0


           Summary: abort in compute_class_bitmap (field->offset) while
                    JITting a verified method
    Classification: Mono
           Product: Mono: Runtime
           Version: 2.6.x
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: JIT
        AssignedTo: lupus at novell.com
        ReportedBy: spouliot at novell.com
         QAContact: mono-bugs at lists.ximian.com
                CC: rkumpera at novell.com
          Found By: ---
           Blocker: ---


Created an attachment (id=334104)
 --> (http://bugzilla.novell.com/attachment.cgi?id=334104)
assembly to reproduce abort

on x86-64 (should work on x86)

 MONO_PATH=/opt/mono/lib/moonlight/plugin/ gdb --args mono --security=core-clr
--compile-all System.sigabrt.75351.dll

** ERROR:(object.c:678):compute_class_bitmap: assertion failed: ((field->offset
% sizeof(gpointer)) == 0)

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x41289950 (LWP 21533)]
0x00007f44345a75c5 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f44345a75c5 in raise () from /lib64/libc.so.6
#1  0x00007f44345a8bb3 in abort () from /lib64/libc.so.6
#2  0x00007f44353d52c7 in g_assertion_message () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f44353d5762 in g_assertion_message_expr () from
/usr/lib64/libglib-2.0.so.0
#4  0x000000000062b482 in compute_class_bitmap (class=0xa49c48,
bitmap=0x41287ca0, size=256, offset=0, max_set=0x41287cc4, static_fields=0) at
object.c:678
#5  0x000000000062b884 in mono_class_compute_gc_descriptor (class=0xa49c48) at
object.c:940
#6  0x000000000062d886 in mono_class_create_runtime_vtable
(domain=0x7f44358ebdb0, class=0xa49c48, raise_on_error=0) at object.c:1829
#7  0x000000000062d234 in mono_class_vtable_full (domain=0x7f44358ebdb0,
class=0xa49c48, raise_on_error=0) at object.c:1711
#8  0x000000000062d159 in mono_class_vtable (domain=0x7f44358ebdb0,
class=0xa49c48) at object.c:1682
#9  0x000000000046ce25 in mono_method_to_ir (cfg=0xa6a600, method=0xa6af40,
start_bblock=0xa8c0a0, end_bblock=0xa8c1a8, return_var=0x0,
dont_inline=0xa850c0, 
    inline_args=0x0, inline_offset=0, is_virtual_call=0) at method-to-ir.c:8202
#10 0x000000000041f7bd in mini_method_compile (method=0xa6af40, opts=55667199,
domain=0x7f44358ebdb0, run_cctors=0, compile_aot=0, parts=0) at mini.c:3402
#11 0x00000000004a3d32 in compile_all_methods_thread_main (args=0x7fff3da5b5d0)
at driver.c:881
#12 0x00000000005af9de in start_wrapper (data=0xa294e0) at threads.c:662
#13 0x0000000000658b53 in thread_start_routine (args=0x9fcbb0) at
wthreads.c:286
#14 0x0000000000671d6e in GC_start_routine (arg=0x7f44358ece70) at
pthread_support.c:1390
#15 0x00007f4434b2b040 in start_thread () from /lib64/libpthread.so.0
#16 0x00007f443464808d in clone () from /lib64/libc.so.6
#17 0x0000000000000000 in ?? ()
(gdb) up 4
#4  0x000000000062b482 in compute_class_bitmap (class=0xa49c48,
bitmap=0x41287ca0, size=256, offset=0, max_set=0x41287cc4, static_fields=0) at
object.c:678
678                    g_assert ((field->offset % sizeof(gpointer)) == 0);
(gdb) p class->name
$1 = 0x7f44358c935f "Regex"
(gdb) p class->name_space
$2 = 0x7f44358c91b9 "System.Text.RegularExpressions"
(gdb) p field->offset
$3 = 76
(gdb) p *field
$4 = {type = 0xa6af10, name = 0x7f44358cb9e5 "roptions", parent = 0xa49c48,
offset = 76}

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