(lldb) run
Process 3085 launched: '/Users/xamarinqa/Xamarin/monodevelop/main/build/MacOSX/MonoDevelop.app/Contents/MacOS/MonoDevelop' (x86_64)
Process 3085 stopped
* thread #2, stop reason = exec
    frame #0: 0x0000000100236000 dyld`_dyld_start
dyld`_dyld_start:
->  0x100236000 <+0>: popq   %rdi
    0x100236001 <+1>: pushq  $0x0
    0x100236003 <+3>: movq   %rsp, %rbp
    0x100236006 <+6>: andq   $-0x10, %rsp
Target 0: (MonoDevelop) stopped.
(lldb) c
Process 3085 resuming
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/4.5/mscorlib.dll.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/libgobject-2.0.0.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/libglib-2.0.0.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/libgthread-2.0.0.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/libgio-2.0.0.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/libgmodule-2.0.0.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
Process 3085 stopped
* thread #2, name = 'tid_307', queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
    frame #0: 0x00007fff337d12ce CoreFoundation`CFRelease.cold.1 + 14
CoreFoundation`CFRelease.cold.1:
->  0x7fff337d12ce <+14>: ud2

CoreFoundation`__CFStringCollectionCopy.cold.1:
    0x7fff337d12d0 <+0>:  leaq   0x1e9b2c(%rip), %rax      ; "*** __CFStringCollectionCopy() called with NULL ***"
    0x7fff337d12d7 <+7>:  movq   %rax, 0x5ab211a2(%rip)    ; gCRAnnotations + 8
    0x7fff337d12de <+14>: ud2
Target 0: (MonoDevelop) stopped.
(lldb) bt
error: MonoDevelop debug map object file '/Users/xamarinqa/Xamarin/monodevelop/main/external/Xamarin.Mac.registrar.full.a' has changed (actual time is 2019-09-27 14:22:42.000000000, debug map time is 2019-09-20 15:35:53.000000000) since this executable was linked, file will be ignored
* thread #2, name = 'tid_307', queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
  * frame #0: 0x00007fff337d12ce CoreFoundation`CFRelease.cold.1 + 14
    frame #1: 0x00007fff33628d0a CoreFoundation`CFRelease + 101
    frame #2: 0x000000010c152cf8 libpangocairo-1.0.0.dylib`pango_core_text_font_map_init(ctfontmap=0x0000000101aaba30) at pangocoretext-fontmap.c:1447:7
    frame #3: 0x000000010b971544 libgobject-2.0.0.dylib`g_type_create_instance + 983
    frame #4: 0x000000010b961c82 libgobject-2.0.0.dylib`g_object_constructor + 22
    frame #5: 0x000000010b96162b libgobject-2.0.0.dylib`g_object_newv + 601
    frame #6: 0x000000010b961393 libgobject-2.0.0.dylib`g_object_new + 187
    frame #7: 0x000000010c14eb27 libpangocairo-1.0.0.dylib`pango_cairo_font_map_new at pangocairo-fontmap.c:74:10
    frame #8: 0x000000010c14eba8 libpangocairo-1.0.0.dylib`pango_cairo_font_map_get_default at pangocairo-fontmap.c:162:17
    frame #9: 0x000000010c09285d libgdk-quartz-2.0.0.dylib`gdk_pango_context_get_for_screen(screen=0x00000001015260a0) at gdkpango.c:1487:13
    frame #10: 0x000000010c092791 libgdk-quartz-2.0.0.dylib`gdk_pango_context_get at gdkpango.c:1452:10
    frame #11: 0x00000001141719f8
    frame #12: 0x0000000102112d69 libmonosgen-2.0.1.dylib`mono_jit_runtime_invoke(method=<unavailable>, obj=<unavailable>, params=0x0000000000000000, exc=0x000000010281cc10, error=<unavailable>) at mini-runtime.c:3184:12 [opt]
    frame #13: 0x0000000102330354 libmonosgen-2.0.1.dylib`do_runtime_invoke(method=0x0000000102a2f060, obj=0x0000000000000000, params=0x0000000000000000, exc=0x00007ffeefbfde18, error=0x00007ffeefbfe078) at object.c:3017:11 [opt]
    frame #14: 0x000000010232c07d libmonosgen-2.0.1.dylib`mono_runtime_class_init_full [inlined] mono_runtime_try_invoke(method=<unavailable>, obj=<unavailable>, params=<unavailable>, error=0x00007ffeefbfe078) at object.c:3126:9 [opt]
    frame #15: 0x000000010232c035 libmonosgen-2.0.1.dylib`mono_runtime_class_init_full(vtable=0x0000000102a28c00, error=0x00007ffeefbfe078) at object.c:546 [opt]
    frame #16: 0x000000010210aa3e libmonosgen-2.0.1.dylib`mono_jit_compile_method_inner(method=0x0000000103c671d8, target_domain=0x0000000102020c30, opt=<unavailable>, error=0x00007ffeefbfe078) at mini.c:4165:8 [opt]
    frame #17: 0x000000010210e4d9 libmonosgen-2.0.1.dylib`mono_jit_compile_method_with_opt(method=0x0000000103c671d8, opt=<unavailable>, jit_only=0, error=0x00007ffeefbfe078) at mini-runtime.c:2445:10 [opt]
    frame #18: 0x00000001021b9702 libmonosgen-2.0.1.dylib`common_call_trampoline(regs=0x00007ffeefbfe148, code="H\x83\U00000088???Y??q?\x01", m=0x0000000103c671d8, vt=0x0000000000000000, vtable_slot=<unavailable>, error=0x00007ffeefbfe078) at mini-trampolines.c:637:27 [opt]
    frame #19: 0x00000001021b9119 libmonosgen-2.0.1.dylib`mono_magic_trampoline(regs=0x00007ffeefbfe148, code="H\x83\U00000088???Y??q?\x01", arg=0x0000000103c671d8, tramp=<unavailable>) at mini-trampolines.c:777:8 [opt]
    frame #20: 0x0000000100cc7393
    frame #21: 0x0000000114171813
    frame #22: 0x0000000102112d69 libmonosgen-2.0.1.dylib`mono_jit_runtime_invoke(method=<unavailable>, obj=<unavailable>, params=0x0000000000000000, exc=0x00000001141717d0, error=<unavailable>) at mini-runtime.c:3184:12 [opt]
    frame #23: 0x0000000102330354 libmonosgen-2.0.1.dylib`do_runtime_invoke(method=0x0000000103b14660, obj=0x000000010649b958, params=0x0000000000000000, exc=0x0000000000000000, error=0x00007ffeefbfe630) at object.c:3017:11 [opt]
    frame #24: 0x0000000102334ba9 libmonosgen-2.0.1.dylib`mono_runtime_try_invoke_array [inlined] mono_runtime_try_invoke(exc=<unavailable>, error=<unavailable>) at object.c:3126:9 [opt]
    frame #25: 0x0000000102334b70 libmonosgen-2.0.1.dylib`mono_runtime_try_invoke_array(method=<unavailable>, obj=0x000000010649b958, params=0x0000000000000000, exc=<unavailable>, error=<unavailable>) at object.c:5537 [opt]
    frame #26: 0x00000001022cbd5f libmonosgen-2.0.1.dylib`ves_icall_InternalInvoke(method=<unavailable>, this_arg=<unavailable>, params=0x0000000000000000, exc=<unavailable>) at icall.c:3644:23 [opt]
    frame #27: 0x00000001026e46f2
    frame #28: 0x00000001091cc973
    frame #29: 0x000000011416e9a3
    frame #30: 0x00000001026e055b
    frame #31: 0x00000001026dff93
    frame #32: 0x0000000102112d69 libmonosgen-2.0.1.dylib`mono_jit_runtime_invoke(method=<unavailable>, obj=<unavailable>, params=0x00007ffeefbff1e8, exc=0x00007ffeefbfe748, error=<unavailable>) at mini-runtime.c:3184:12 [opt]
    frame #33: 0x0000000102330354 libmonosgen-2.0.1.dylib`do_runtime_invoke(method=0x0000000100e2a768, obj=0x0000000000000000, params=0x00007ffeefbff1e8, exc=0x0000000000000000, error=0x00007ffeefbff228) at object.c:3017:11 [opt]
    frame #34: 0x000000010233407c libmonosgen-2.0.1.dylib`do_exec_main_checked [inlined] mono_runtime_invoke_checked(method=<unavailable>, obj=<unavailable>, params=<unavailable>, error=0x00007ffeefbff228) at object.c:3185:9 [opt]
    frame #35: 0x000000010233406d libmonosgen-2.0.1.dylib`do_exec_main_checked(method=0x0000000100e2a768, args=<unavailable>, error=0x00007ffeefbff228) at object.c:5119 [opt]
    frame #36: 0x00000001021744dd libmonosgen-2.0.1.dylib`mono_jit_exec at driver.g.c:1329:13 [opt]
    frame #37: 0x00000001021744cf libmonosgen-2.0.1.dylib`mono_jit_exec(domain=<unavailable>, assembly=<unavailable>, argc=1, argv=0x0000000102001360) at driver.g.c:1274 [opt]
    frame #38: 0x0000000102177688 libmonosgen-2.0.1.dylib`mono_main [inlined] main_thread_handler at driver.g.c:1406:3 [opt]
    frame #39: 0x0000000102177653 libmonosgen-2.0.1.dylib`mono_main(argc=3, argv=<unavailable>) at driver.g.c:2663 [opt]
    frame #40: 0x00000001000023cd MonoDevelop`main(argc=1, argv=0x00007ffeefbff590) at monostub.mm:347:9
    frame #41: 0x00007fff61d2e405 libdyld.dylib`start + 1
(lldb) up
frame #1: 0x00007fff33628d0a CoreFoundation`CFRelease + 101
CoreFoundation`CFRelease:
->  0x7fff33628d0a <+101>: nop
    0x7fff33628d0b <+102>: nop
    0x7fff33628d0c <+103>: nop
    0x7fff33628d0d <+104>: nop
(lldb) up
frame #2: 0x000000010c152cf8 libpangocairo-1.0.0.dylib`pango_core_text_font_map_init(ctfontmap=0x0000000101aaba30) at pangocoretext-fontmap.c:1447:7
(lldb) frame v
(PangoCoreTextFontMap *) ctfontmap = 0x0000000101aaba30
(PangoCoreTextFamily *) family = 0x0000000103c4fa40
(CTFontCollectionRef) collection = 0x000000010b8ebdf0
(CFArrayRef) ctfaces = 0x000000010b8ec360 @"533 elements"
(CFIndex) i = 533
(CFIndex) count = 533
(SInt32) major = 10
(SInt32) minor = 15
(NSCTFont *) sysfont = 0x00000001148227b0
(NSString *) name = nil
(NSArray *) fontfaces = nil
(int) num_faces = 0