On Mon, 2017-10-02 at 13:14 +0200, Dan Wilcox wrote:

If you want more info, you can compile pd with debugging symbols added via:

./configure --enable-debug CFLAGS="-g"

I'm going to add the "-g" back to the default debug settings as it's needed for useful stack frame info, etc.

If you have the Xcode command line tools installed (not the Xcode app!), you can use lldb for similar info: http://lldb.llvm.org/lldb- gdb.html. It can give you the exact location in the code where the crash occurred.

Thanks, Dan.

Just in case this is useful to anyone, here is the backtrace on macOS:

$ lldb -- pd -stderr -rt -jack -jackname tpf-client-1 -nojackconnect -inchannels 8 -outchannels 64 -open /Users/itz/pd-src/tpf/pd-tools/tpf-client.pd  (lldb) target create "pd" Current executable set to 'pd' (x86_64). (lldb) settings set -- target.run-args  "-stderr" "-rt" "-jack" "-jackname" "tpf-client-1" "-nojackconnect" "-inchannels" "8" "-outchannels" "64" "-open" "/Users/itz/pd-src/tpf/pd-tools/tpf-client.pd" (lldb) run Process 28469 launched: '/usr/local/bin/pd' (x86_64) Pt_Start() called slipenc: maximum packet length is 16384 iemnet - networking with Pd: [tcpclient]         compiled on Dec 14 2015 at 14:29:01         copyright © 2010-2015 IOhannes m zmoelnig, IEM         based on mrpeach/net, based on maxlib slipdec: maximum packet length is 16384 iemnet - networking with Pd: [udpclient]         compiled on Dec 14 2015 at 14:29:01         copyright © 2010-2015 IOhannes m zmoelnig, IEM         based on mrpeach/net, based on maxlib pd(28469,0x7fff79118000) malloc: *** error for object 0x1020f0c08: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug Process 28469 stopped

• thread #1: tid = 0x1c38a, 0x00007fff97b02f06 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT

frame #0: 0x00007fff97b02f06 libsystem_kernel.dylib__pthread_kill + 10 libsystem_kernel.dylib__pthread_kill: ->  0x7fff97b02f06 <+10>: jae    0x7fff97b02f10            ; <+20>     0x7fff97b02f08 <+12>: movq   %rax, %rdi     0x7fff97b02f0b <+15>: jmp    0x7fff97afd7cd            ; cerror_nocancel     0x7fff97b02f10 <+20>: retq    (lldb) bt

• thread #1: tid = 0x1c38a, 0x00007fff97b02f06 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT

* frame #0: 0x00007fff97b02f06 libsystem_kernel.dylib__pthread_kill + 10     frame #1: 0x00007fff8eb604ec libsystem_pthread.dylibpthread_kill + 90     frame #2: 0x00007fff99dee6df libsystem_c.dylibabort + 129     frame #3: 0x00007fff8909b396 libsystem_malloc.dylibszone_error + 626     frame #4: 0x00007fff89091373 libsystem_malloc.dylibsmall_free_list_remove_ptr + 152     frame #5: 0x00007fff8908fa7c libsystem_malloc.dylibszone_free_definite_size + 1790     frame #6: 0x000000010007f28c pdfreebytes(fatso=0x00000001020cae00, nbytes=2048) + 44 at m_memory.c:79     frame #7: 0x000000010001f069 pdsignal_cleanup + 105 at d_ugen.c:398     frame #8: 0x000000010001f669 pdugen_stop + 89 at d_ugen.c:597     frame #9: 0x000000010002d62e pdcanvas_stop_dsp + 30 at g_canvas.c:1165     frame #10: 0x000000010002cad8 pdcanvas_suspend_dsp + 40 at g_canvas.c:1181     frame #11: 0x000000010001eaf0 pdblock_set(x=0x000000010041bd40, fcalcsize=384, foverlap=1, fupsample=1) + 48 at d_ugen.c:175     frame #12: 0x000000010007d671 pdpd_typedmess(x=0x000000010041bd40, s=0x000000010030bc60, argc=0, argv=0x00007fff5fbedcf0) + 1425 at m_class.c:960     frame #13: 0x00000001000805bf pdoutlet_anything(x=0x000000010041c470, s=0x000000010030bc60, argc=3, argv=0x00007fff5fbedcc0) + 111 at m_obj.c:422     frame #14: 0x00000001000620bf pdmessresponder_anything(x=0x000000010041c7d0, s=0x000000010030bc60, argc=3, argv=0x00007fff5fbedcc0) + 47 at g_text.c:339     frame #15: 0x000000010007d832 pdpd_typedmess(x=0x000000010041c7d0, s=0x000000010030bc60, argc=3, argv=0x00007fff5fbedcc0) + 1874 at m_class.c:981     frame #16: 0x000000010007696f pdbinbuf_eval(x=0x000000010041c680, target=0x000000010041c7d0, argc=1, argv=0x00007fff5fbee820) + 2079 at m_binbuf.c:773     frame #17: 0x0000000100061c4e pdmessage_list(x=0x000000010041c7a0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 62 at g_text.c:363     frame #18: 0x000000010008221d pdpd_list(x=0x000000010041c7a0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #19: 0x000000010008051f pdoutlet_list(x=0x000000010041c740, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:411     frame #20: 0x00000001000a143d pdtrigger_list(x=0x000000010041c6d0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 413 at x_connective.c:1033     frame #21: 0x000000010008221d pdpd_list(x=0x000000010041c6d0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #22: 0x000000010008051f pdoutlet_list(x=0x000000010041c600, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:411     frame #23: 0x000000010004862f pdvinlet_list(x=0x000000010041c510, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 47 at g_io.c:76     frame #24: 0x000000010008221d pdpd_list(x=0x000000010041c510, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #25: 0x000000010007fee3 pdinlet_list(x=0x000000010041c5d0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 179 at m_obj.c:142     frame #26: 0x000000010008221d pdpd_list(x=0x000000010041c5d0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #27: 0x000000010008051f pdoutlet_list(x=0x000000010041d8f0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:411     frame #28: 0x00000001000a143d pdtrigger_list(x=0x000000010041d870, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 413 at x_connective.c:1033     frame #29: 0x000000010008221d pdpd_list(x=0x000000010041d870, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #30: 0x000000010008051f pdoutlet_list(x=0x000000010041d600, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:411     frame #31: 0x000000010004862f pdvinlet_list(x=0x000000010041d510, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 47 at g_io.c:76     frame #32: 0x000000010008221d pdpd_list(x=0x000000010041d510, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #33: 0x000000010007fee3 pdinlet_list(x=0x000000010041d5d0, s=0x00000001001221b0, argc=1, argv=0x00007fff5fbee820) + 179 at m_obj.c:142     frame #34: 0x000000010008221d pdpd_list(x=0x000000010041d5d0, s=0x0000000000000000, argc=1, argv=0x00007fff5fbee820) + 77 at m_pd.c:288     frame #35: 0x000000010008051f pdoutlet_list(x=0x000000010041e380, s=0x0000000000000000, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:411     frame #36: 0x000000010009f11f pdroute_anything(x=0x000000010041e2f0, sel=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 191 at x_connective.c:529     frame #37: 0x000000010007d832 pdpd_typedmess(x=0x000000010041e2f0, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 1874 at m_class.c:981     frame #38: 0x00000001000805bf pdoutlet_anything(x=0x000000010041a220, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:422     frame #39: 0x000000010004866f pdvinlet_anything(x=0x000000010041a130, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 47 at g_io.c:81     frame #40: 0x000000010007d832 pdpd_typedmess(x=0x000000010041a130, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 1874 at m_class.c:981     frame #41: 0x0000000100080011 pdinlet_anything(x=0x000000010041a1f0, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 113 at m_obj.c:157     frame #42: 0x000000010007d832 pdpd_typedmess(x=0x000000010041a1f0, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 1874 at m_class.c:981     frame #43: 0x00000001000805bf pdoutlet_anything(x=0x0000000100427850, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 111 at m_obj.c:422     frame #44: 0x00000001000620bf pdmessresponder_anything(x=0x00000001004278e0, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 47 at g_text.c:339     frame #45: 0x000000010007d832 pdpd_typedmess(x=0x00000001004278e0, s=0x000000010032fc50, argc=1, argv=0x00007fff5fbee820) + 1874 at m_class.c:981     frame #46: 0x000000010007696f pdbinbuf_eval(x=0x0000000100427840, target=0x00000001004278e0, argc=1, argv=0x00007fff5fbee880) + 2079 at m_binbuf.c:773     frame #47: 0x0000000100061bb3 pdmessage_float(x=0x00000001004278b0, f=384) + 67 at g_text.c:351     frame #48: 0x0000000100082142 pdpd_float(x=0x00000001004278b0, f=384) + 50 at m_pd.c:273     frame #49: 0x00000001000803f2 pdoutlet_float(x=0x0000000100427df0, f=384) + 98 at m_obj.c:389     frame #50: 0x0000000100048a33 pdvoutlet_float(x=0x0000000100427d30, f=384) + 35 at g_io.c:334     frame #51: 0x0000000100082142 pdpd_float(x=0x0000000100427d30, f=384) + 50 at m_pd.c:273     frame #52: 0x000000010007fcd7 pdinlet_float(x=0x0000000100427e10, f=384) + 151 at m_obj.c:112     frame #53: 0x0000000100082142 pdpd_float(x=0x0000000100427e10, f=384) + 50 at m_pd.c:273     frame #54: 0x00000001000803f2 pdoutlet_float(x=0x0000000100427cc0, f=384) + 98 at m_obj.c:389     frame #55: 0x000000010009919b pdbinop1_times_bang(x=0x0000000100427c80) + 43 at x_arithmetic.c:81     frame #56: 0x0000000100082108 pdpd_bang(x=0x0000000100427c80) + 40 at m_pd.c:268     frame #57: 0x0000000100080278 pdoutlet_bang(x=0x0000000100427c30) + 88 at m_obj.c:363     frame #58: 0x00000001000a136b pdtrigger_list(x=0x0000000100427bd0, s=0x0000000000000000, argc=1, argv=0x00007fff5fbeeab0) + 203 at x_connective.c:1023     frame #59: 0x00000001000a1518 pdtrigger_float(x=0x0000000100427bd0, f=3) + 56 at x_connective.c:1067     frame #60: 0x0000000100082142 pdpd_float(x=0x0000000100427bd0, f=3) + 50 at m_pd.c:273     frame #61: 0x00000001000803f2 pdoutlet_float(x=0x0000000100427ec0, f=3) + 98 at m_obj.c:389     frame #62: 0x00000001000a0223 pdreceive_float(x=0x0000000100427e80, f=3) + 35 at x_connective.c:305     frame #63: 0x0000000100082142 pdpd_float(x=0x0000000100427e80, f=3) + 50 at m_pd.c:273     frame #64: 0x00000001000819a9 pdbindlist_float(x=0x00000001004229d0, f=3) + 57 at m_pd.c:80     frame #65: 0x0000000100082142 pdpd_float(x=0x00000001004229d0, f=3) + 50 at m_pd.c:273     frame #66: 0x00000001000a002a pdsend_float(x=0x00000001004114e0, f=3) + 58 at x_connective.c:244     frame #67: 0x0000000100082142 pdpd_float(x=0x00000001004114e0, f=3) + 50 at m_pd.c:273     frame #68: 0x00000001000803f2 pdoutlet_float(x=0x0000000100411490, f=3) + 98 at m_obj.c:389     frame #69: 0x000000010009f4a3 pdchange_float(x=0x0000000100411450, f=3) + 83 at x_connective.c:1415     frame #70: 0x0000000100082142 pdpd_float(x=0x0000000100411450, f=3) + 50 at m_pd.c:273     frame #71: 0x00000001000803f2 pdoutlet_float(x=0x000000010035a620, f=3) + 98 at m_obj.c:389     frame #72: 0x0000000100048a33 pdvoutlet_float(x=0x000000010035a560, f=3) + 35 at g_io.c:334     frame #73: 0x0000000100082142 pdpd_float(x=0x000000010035a560, f=3) + 50 at m_pd.c:273     frame #74: 0x000000010007fcd7 pdinlet_float(x=0x000000010035a640, f=3) + 151 at m_obj.c:112     frame #75: 0x0000000100082142 pdpd_float(x=0x000000010035a640, f=3) + 50 at m_pd.c:273     frame #76: 0x00000001000803f2 pdoutlet_float(x=0x000000010035a430, f=3) + 98 at m_obj.c:389     frame #77: 0x00000001000a195a pdmoses_float(x=0x000000010035a3c0, f=3) + 58 at x_connective.c:1177     frame #78: 0x0000000100082142 pdpd_float(x=0x000000010035a3c0, f=3) + 50 at m_pd.c:273     frame #79: 0x00000001000803f2 pdoutlet_float(x=0x000000010035a010, f=3) + 98 at m_obj.c:389     frame #80: 0x0000000100062013 pdmessresponder_float(x=0x000000010035a170, f=3) + 35 at g_text.c:322     frame #81: 0x0000000100082142 pdpd_float(x=0x000000010035a170, f=3) + 50 at m_pd.c:273     frame #82: 0x0000000100076996 pdbinbuf_eval(x=0x000000010035a190, target=0x000000010035a170, argc=16, argv=0x0000000101811400) + 2118 at m_binbuf.c:776     frame #83: 0x0000000100061c4e pdmessage_list(x=0x000000010035a140, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 62 at g_text.c:363     frame #84: 0x000000010008221d pdpd_list(x=0x000000010035a140, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #85: 0x000000010008051f pdoutlet_list(x=0x0000000100359f30, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #86: 0x000000010004862f pdvinlet_list(x=0x0000000100359e40, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 47 at g_io.c:76     frame #87: 0x000000010008221d pdpd_list(x=0x0000000100359e40, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #88: 0x000000010007fee3 pdinlet_list(x=0x0000000100359f00, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 179 at m_obj.c:142     frame #89: 0x000000010008221d pdpd_list(x=0x0000000100359f00, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #90: 0x000000010008051f pdoutlet_list(x=0x0000000100411380, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #91: 0x00000001000a143d pdtrigger_list(x=0x0000000100411290, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 413 at x_connective.c:1033     frame #92: 0x000000010008221d pdpd_list(x=0x0000000100411290, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #93: 0x000000010008051f pdoutlet_list(x=0x0000000100356dc0, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #94: 0x000000010004862f pdvinlet_list(x=0x0000000100356cd0, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 47 at g_io.c:76     frame #95: 0x000000010008221d pdpd_list(x=0x0000000100356cd0, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #96: 0x000000010007fee3 pdinlet_list(x=0x0000000100356d90, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 179 at m_obj.c:142     frame #97: 0x000000010008221d pdpd_list(x=0x0000000100356d90, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #98: 0x000000010008051f pdoutlet_list(x=0x0000000100504940, s=0x00000001001221b0, argc=16, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #99: 0x00000001000a54a9 pdlist_split_list(x=0x00000001005048f0, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 137 at x_list.c:577     frame #100: 0x000000010008221d pdpd_list(x=0x00000001005048f0, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #101: 0x000000010008051f pdoutlet_list(x=0x0000000100504890, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #102: 0x00000001000a143d pdtrigger_list(x=0x0000000100504810, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 413 at x_connective.c:1033     frame #103: 0x000000010008221d pdpd_list(x=0x0000000100504810, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #104: 0x000000010008051f pdoutlet_list(x=0x00000001003556c0, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #105: 0x00000001000a182f pdspigot_list(x=0x0000000100355650, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 79 at x_connective.c:1135     frame #106: 0x000000010008221d pdpd_list(x=0x0000000100355650, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #107: 0x000000010008051f pdoutlet_list(x=0x0000000100352dc0, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #108: 0x00000001000a02bf pdreceive_list(x=0x0000000100352d80, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 47 at x_connective.c:320     frame #109: 0x000000010008221d pdpd_list(x=0x0000000100352d80, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #110: 0x00000001000a00f6 pdsend_list(x=0x0000000103006f10, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 70 at x_connective.c:259     frame #111: 0x000000010008221d pdpd_list(x=0x0000000103006f10, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 77 at m_pd.c:288     frame #112: 0x000000010008051f pdoutlet_list(x=0x0000000103006bf0, s=0x00000001001221b0, argc=784, argv=0x0000000101811400) + 111 at m_obj.c:411     frame #113: 0x0000000109cc2e3b libiemnet.dylibpollfun + 139     frame #114: 0x00000001000892a3 pdsys_domicrosleep(microsec=0, pollem=1) + 579 at s_inter.c:230     frame #115: 0x000000010008a934 pdsys_pollgui + 20 at s_inter.c:902     frame #116: 0x000000010008358e pdm_pollingscheduler + 462 at m_sched.c:523     frame #117: 0x00000001000832e2 pdm_mainloop + 50 at m_sched.c:596     frame #118: 0x000000010008dcc6 pdsys_main(argc=13, argv=0x00007fff5fbffa98) + 678 at s_main.c:385     frame #119: 0x0000000100086a02 pdmain(argc=13, argv=0x00007fff5fbffa98) + 34 at s_entry.c:32     frame #120: 0x00007fff9c4e85ad libdyld.dylibstart + 1     frame #121: 0x00007fff9c4e85ad libdyld.dylibstart + 1

Roman