tdbc::sqlite3

Basically, I checked out core-8-branch (commit e3cb60581fd70c9d1eeccc47ea9d666b54e48e88) 
from the core repository earlier today, and tried a default build on my laptop running MacOS 10.12.6 (Sierra). 
Tcl 8.7 checks out, but the bundled sqlite3.9.2 and tdbcsqlite3-1.0.3 packages segfaults.

It apparently was the same in the 8.6.6 release, because the whole thing started out with me observing 
that the tdbcsqlite3 package from there would segfault whenever one tries to create a database 
connection. (I'm surprised for in a year and a half I never used it before, but apparently I did all my 
tdbcsqlite3 on the other computer.) From the look of the crash reports I got there, it looked like tclsqlite3 
was in the process of resolving the file name when it jumped to 0x00000000:

Process:               Wish [6682]
Path:                  /usr/local/bin/../../../Library/Frameworks/Tk.framework/Versions/8.6/Resources/Wish.app/Contents/MacOS/Wish
Identifier:            com.tcltk.wish
Version:               8.6.6 (8.6.6)
Code Type:             X86-64 (Native)
Parent Process:        ??? [6680]
Responsible:           Wish [6682]
User ID:               12246

Date/Time:             2018-08-14 22:52:24.456 +0200
OS Version:            Mac OS X 10.12.6 (16G1510)
Report Version:        12
Anonymous UUID:        74D7A69C-9331-1B12-BE01-FA749CE25455

Sleep/Wake UUID:       5FEAA729-E019-402A-B4DD-EA707918EB78

Time Awake Since Boot: 36000 seconds
Time Since Wake:       16000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [0]

VM Regions Near 0:
--> 
    __TEXT                 00000001072a2000-00000001072a6000 [   16K] r-x/rwx SM=COW  /Library/Frameworks/Tk.framework/Versions/8.6/Resources/Wish.app/Contents/MacOS/Wish

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   ???                           	000000000000000000 0 + 0
1   Tcl                           	0x000000010dc497bd 0x10dbb4000 + 612285
2   Tcl                           	0x000000010dc4972b 0x10dbb4000 + 612139
3   Tcl                           	0x000000010dc489c8 Tcl_GetThreadData + 21
4   Tcl                           	0x000000010dc38790 0x10dbb4000 + 542608
5   Tcl                           	0x000000010dc38515 Tcl_FSGetTranslatedPath + 22
6   Tcl                           	0x000000010dc0ce75 Tcl_TranslateFileName + 48
7   libtclsqlite3.dylib           	0x000000010da47908 DbMain + 802
8   Tcl                           	0x00000001073fac13 0x1073e4000 + 93203
9   Tcl                           	0x00000001073f79cd TclNRRunCallbacks + 80
10  Tcl                           	0x00000001073f8c31 0x1073e4000 + 85041
11  Tcl                           	0x00000001073f84df Tcl_EvalEx + 26
12  Tk                            	0x000000010736dcb5 0x1072ad000 + 789685
13  com.apple.Foundation          	0x00007fffa3910afd -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:] + 290
14  com.apple.Foundation          	0x00007fffa3910977 _NSAppleEventManagerGenericHandler + 102
15  com.apple.AE                  	0x00007fffa2d14f26 aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned int, unsigned char*) + 544
16  com.apple.AE                  	0x00007fffa2d14c9d dispatchEventAndSendReply(AEDesc const*, AEDesc*) + 39
17  com.apple.AE                  	0x00007fffa2d14ba9 aeProcessAppleEvent + 312
18  com.apple.HIToolbox           	0x00007fffa143fddf AEProcessAppleEvent + 55
19  com.apple.AppKit              	0x00007fff9f9c5d1d _DPSNextEvent + 1833
20  com.apple.AppKit              	0x00007fffa01417ee -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796
21  Tk                            	0x0000000107375aa6 0x1072ad000 + 821926
22  Tk                            	0x0000000107375e4e 0x1072ad000 + 822862
23  Tcl                           	0x00000001074a72ce Tcl_DoOneEvent + 317
24  Tk                            	0x00000001072c3c8a Tk_MainLoop + 33
25  Tk                            	0x00000001072d0ec1 Tk_MainEx + 1556
26  Wish                          	0x00000001072a544d 0x1072a2000 + 13389
27  libdyld.dylib                 	0x00007fffb7660235 start + 1

Thread 1:
0   libsystem_kernel.dylib        	0x00007fffb778eeb6 __select + 10
1   Tcl                           	0x00000001074f162e 0x1073e4000 + 1103406
2   libsystem_pthread.dylib       	0x00007fffb787993b _pthread_body + 180
3   libsystem_pthread.dylib       	0x00007fffb7879887 _pthread_start + 286
4   libsystem_pthread.dylib       	0x00007fffb787908d thread_start + 13

Thread 2:: com.apple.NSEventThread
0   libsystem_kernel.dylib        	0x00007fffb778734a mach_msg_trap + 10
1   libsystem_kernel.dylib        	0x00007fffb7786797 mach_msg + 55
2   com.apple.CoreFoundation      	0x00007fffa1ecf434 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation      	0x00007fffa1ece8c1 __CFRunLoopRun + 1361
4   com.apple.CoreFoundation      	0x00007fffa1ece114 CFRunLoopRunSpecific + 420
5   com.apple.AppKit              	0x00007fff9fb12f02 _NSEventThread + 205
6   libsystem_pthread.dylib       	0x00007fffb787993b _pthread_body + 180
7   libsystem_pthread.dylib       	0x00007fffb7879887 _pthread_start + 286
8   libsystem_pthread.dylib       	0x00007fffb787908d thread_start + 13

Thread 3:
0   libsystem_kernel.dylib        	0x00007fffb778f44e __workq_kernreturn + 10
1   libsystem_pthread.dylib       	0x00007fffb787948e _pthread_wqthread + 1023
2   libsystem_pthread.dylib       	0x00007fffb787907d start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000000  rcx: 0x0000000000000000  rdx: 0x0000000000000000
  rdi: 0x000000010dc8b370  rsi: 0x00007fffc05773c0  rbp: 0x00007fff5895bfc0  rsp: 0x00007fff5895bf88
   r8: 0x00007fce361c53a8   r9: 0x0000000000077ef0  r10: 0x00007fce361c53b0  r11: 0xffffffff00000000
  r12: 0x000000010dc8b520  r13: 0x000000010dc8b528  r14: 0x00007fffc05773c0  r15: 0x0000000000000028
  rip: 0x0000000000000000  rfl: 0x0000000000010246  cr2: 0x0000000000000000
  
Logical CPU:     0
Error Code:      0x00000014
Trap Number:     14


Binary Images:
       0x1072a2000 -        0x1072a5fff +Wish (8.6.6 - 8.6.6) <600113DB-ED64-3B0C-B5D8-773A855B2919> /Library/Frameworks/Tk.framework/Versions/8.6/Resources/Wish.app/Contents/MacOS/Wish
       0x1072ad000 -        0x1073a4fff +Tk (8.6.6 - 8.6.6) <77D1EC1F-E5C5-3255-8552-33F25076E877> /Library/Frameworks/Tk.framework/Versions/8.6/Tk
       0x1073e4000 -        0x107518ff3 +Tcl (8.6.6 - 8.6.6) <D351A3AA-D59C-3014-9B9C-F794B9D7D0BD> /Library/Frameworks/Tcl.framework/Versions/8.6/Tcl
       0x10c922000 -        0x10cac8fff  GLEngine (14.0.16) <E8C60E20-6414-32B2-8964-41882943D9C1> /System/Library/Frameworks/OpenGL.framework/Resources/GLEngine.bundle/GLEngine
       0x10cb07000 -        0x10d056ff7  com.apple.driver.AppleIntelBDWGraphicsGLDriver (10.25.19 - 10.2.5) <789447C2-8A4E-307F-BFA6-DBE417B39478> /System/Library/Extensions/AppleIntelBDWGraphicsGLDriver.bundle/Contents/MacOS/AppleIntelBDWGraphicsGLDriver
       0x10d271000 -        0x10d29bfff  GLRendererFloat (14.0.16) <32A016EE-63CF-3D07-9BAB-C4EB3E8E479D> /System/Library/Frameworks/OpenGL.framework/Resources/GLRendererFloat.bundle/GLRendererFloat
       0x10d2a5000 -        0x10d324ff7  com.apple.driver.AppleIntelBDWGraphicsMTLDriver (10.25.19 - 10.2.5) <1B7A62AB-7677-340A-8BA6-D96B1CCC53F7> /System/Library/Extensions/AppleIntelBDWGraphicsMTLDriver.bundle/Contents/MacOS/AppleIntelBDWGraphicsMTLDriver
       0x10d490000 -        0x10d491fff +libtdbc1.0.4.dylib (0) <C7BAB228-19F6-3B2C-A69F-51BBAB37B70C> /Library/Tcl/*/libtdbc1.0.4.dylib
       0x10d494000 -        0x10d496fff +libtkimgjpeg1.4.6.dylib (0) <5326D105-1322-3E86-A45A-7A02E561902A> /Library/Tcl/*/libtkimgjpeg1.4.6.dylib
       0x10da46000 -        0x10da4cffb  libtclsqlite3.dylib (254.8) <87424AA7-1FF1-3661-A619-0ADC135221CA> /System/Library/Tcl/sqlite3/libtclsqlite3.dylib
       0x10da54000 -        0x10da56fff +libtkimg1.4.6.dylib (0) <3BB55209-F4C7-3A25-BDBE-483A60F938CE> /Library/Tcl/*/libtkimg1.4.6.dylib
       0x10da5a000 -        0x10da87ff7 +libjpegtcl9.2.dylib (0) <2C74D956-2DE5-35B4-835D-3FBF16515B84> /Library/Tcl/*/libjpegtcl9.2.dylib
       0x10da8c000 -        0x10da95ff7 +libtkimgtiff1.4.6.dylib (0) <C2F63272-6F54-317B-9CF6-33B8446B937C> /Library/Tcl/*/libtkimgtiff1.4.6.dylib
       0x10da98000 -        0x10daa8fff +libzlibtcl1.2.8.1.dylib (0) <490EDCF9-DC99-39B1-B390-AFC4D0D2DB73> /Library/Tcl/*/libzlibtcl1.2.8.1.dylib
       0x10dbb4000 -        0x10dc80ffb  Tcl (8.5.9 - 8.5.9) <3847DF7C-5356-369A-8B63-8E2FB3F6EF9B> /System/Library/Frameworks/Tcl.framework/Versions/8.5/Tcl
       0x10dca1000 -        0x10dce3fff +libtifftcl3.9.7.dylib (0) <D439EEA8-2CF1-3610-A22F-A41C2774FA34> /Library/Tcl/*/libtifftcl3.9.7.dylib
       0x10ff52000 -        0x10ff8fdc7  dyld (433.5) <322C06B7-8878-311D-888C-C8FD2CA96FF3> /usr/lib/dyld
    0x7fff9caf6000 -     0x7fff9ce3bff7  com.apple.RawCamera.bundle (7.04 - 914) <86A67D11-9791-3CE6-9FF5-3387C0AB925B> /System/Library/CoreServices/RawCamera.bundle/Contents/MacOS/RawCamera
    0x7fff9e9a1000 -     0x7fff9e9a1fff  com.apple.Accelerate (1.11 - Accelerate 1.11) <916E360F-323C-3AE1-AB3D-D1F3B284AEE9> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
    0x7fff9e9a2000 -     0x7fff9e9b9ffb  libCGInterfaces.dylib (331.5) <17109679-A284-3C72-AA60-DBA815D3062B> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/Libraries/libCGInterfaces.dylib
    0x7fff9e9ba000 -     0x7fff9eed3feb  com.apple.vImage (8.1 - ???) <B58A7937-BEE2-38FE-87F4-5D5F40D31DC9> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
    0x7fff9eed4000 -     0x7fff9f045ff3  libBLAS.dylib (1185.50.4) <4087FFE0-627E-3623-96B4-F0A9A1991E09> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
    0x7fff9f046000 -     0x7fff9f05affb  libBNNS.dylib (15) <254698C7-7D36-3FFF-864E-ADEEEE543076> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBNNS.dylib
    0x7fff9f05b000 -     0x7fff9f451fef  libLAPACK.dylib (1185.50.4) <C35FFB2F-A0E6-3903-8A3C-113A74BCBCA2> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
    0x7fff9f452000 -     0x7fff9f468fff  libLinearAlgebra.dylib (1185.50.4) <345CAACF-7263-36EF-B69B-793EA8B390AF> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.dylib
    0x7fff9f469000 -     0x7fff9f46ffff  libQuadrature.dylib (3) <EF56C8E6-DE22-3C69-B543-A8648F335FDD> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.dylib
    0x7fff9f470000 -     0x7fff9f484ff7  libSparseBLAS.dylib (1185.50.4) <67BA432E-FB59-3C78-A8BE-ED4274CBC359> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.dylib
    0x7fff9f485000 -     0x7fff9f60cfe7  libvDSP.dylib (600.60.1) <4155F45B-41CD-3782-AE8F-7AE740FD83C3> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
    0x7fff9f60d000 -     0x7fff9f6bffff  libvMisc.dylib (600.60.1) <E18365D7-DCC4-3304-A8D1-395E656D7B99> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
    0x7fff9f6c0000 -     0x7fff9f6c0fff  com.apple.Accelerate.vecLib (3.11 - vecLib 3.11) <7C5733E7-0568-3E7D-AF61-160F19FED544> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib
    0x7fff9f97f000 -     0x7fffa0758ff3  com.apple.AppKit (6.9 - 1504.83.101) <28D4A1E8-4571-3302-B532-3E74A3144EE8> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
    0x7fffa076a000 -     0x7fffa076afff  com.apple.ApplicationServices (48 - 48) <F30BA8DB-748F-3DDC-B07A-F84C9EBCC7A9> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
    0x7fffa076b000 -     0x7fffa07d9ff7  com.apple.ApplicationServices.ATS (377 - 422.3) <6F127D0C-AF9F-3CB4-B85A-42BF7A0E3045> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/ATS
    0x7fffa0873000 -     0x7fffa09a2fff  libFontParser.dylib (194.14) <35E2D4A9-8B28-33FB-8C60-8F57D249F6B0> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libFontParser.dylib
    0x7fffa09a3000 -     0x7fffa09edff7  libFontRegistry.dylib (196.7) <79411CB6-A093-333A-B669-CEC00B4D5C8E> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libFontRegistry.dylib
    0x7fffa0a4a000 -     0x7fffa0a7dfff  libTrueTypeScaler.dylib (194.14) <33F2CEAE-7915-3739-AC1F-0F4CC4408F08> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libTrueTypeScaler.dylib
    0x7fffa0aea000 -     0x7fffa0b94ff7  com.apple.ColorSync (4.12.0 - 502.2) <ACA4001E-A0E3-33F6-9CD6-EEC2AA15E322> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
    0x7fffa0b95000 -     0x7fffa0be6fff  com.apple.HIServices (1.22 - 593) <045870A9-1D92-3FEF-8722-671E99A35E71> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices
    0x7fffa0be7000 -     0x7fffa0bf6ff3  com.apple.LangAnalysis (1.7.0 - 1.7.0) <2CBE7F61-2056-3F96-99A1-0D527796AFA6> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
    0x7fffa0bf7000 -     0x7fffa0c44fff  com.apple.print.framework.PrintCore (12 - 491) <5027FD58-F0EE-33E4-8577-934CA06CD2AF> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
    0x7fffa0c45000 -     0x7fffa0c80fff  com.apple.QD (3.12 - 313) <B339C41D-8CDF-3342-8414-F9717DCCADD4> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD
    0x7fffa0c81000 -     0x7fffa0c8cfff  com.apple.speech.synthesis.framework (6.6.2 - 6.6.2) <7853EFF4-62B9-394E-B7B8-41A645656820> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/SpeechSynthesis
    0x7fffa0c8d000 -     0x7fffa0e99ff7  com.apple.audio.toolbox.AudioToolbox (1.14 - 1.14) <1F4026C6-23C1-39E8-823D-72298FECF75C> /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox
    0x7fffa0e9a000 -     0x7fffa0e9afff  com.apple.audio.units.AudioUnit (1.14 - 1.14) <2CEE36AF-79E6-3B3E-B369-285E6C1886F7> /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit
    0x7fffa1003000 -     0x7fffa13dffff  com.apple.CFNetwork (811.9 - 811.9) <1E384ECD-D841-356A-8188-61AA8B4A4F2E> /System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
    0x7fffa13f9000 -     0x7fffa13f9fff  com.apple.Carbon (154 - 157) <69F403C7-F0CB-34E6-89B0-235CF4978C17> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
    0x7fffa13fa000 -     0x7fffa13fdfff  com.apple.CommonPanels (1.2.6 - 98) <BF04BB22-D54C-309E-9F5C-897D969CAF70> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CommonPanels.framework/Versions/A/CommonPanels
    0x7fffa13fe000 -     0x7fffa1707fff  com.apple.HIToolbox (2.1.1 - 857.8) <5367366E-747E-32CF-8E76-93CD8E7424C7> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
    0x7fffa1708000 -     0x7fffa170bff7  com.apple.help (1.3.5 - 49) <B1A930E3-5907-3677-BACD-858EF68B172D> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Help.framework/Versions/A/Help
    0x7fffa170c000 -     0x7fffa1711fff  com.apple.ImageCapture (9.0 - 9.0) <341252B4-E082-361A-B756-6A330259C741> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/ImageCapture.framework/Versions/A/ImageCapture
    0x7fffa1712000 -     0x7fffa17a9ff3  com.apple.ink.framework (10.9 - 219) <1BD40B45-FD33-3177-A935-565EE5FC79D7> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework/Versions/A/Ink
    0x7fffa17aa000 -     0x7fffa17c4fff  com.apple.openscripting (1.7 - 172.1) <78F3256B-AF4C-324A-A591-ECA4443A469F> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/OpenScripting.framework/Versions/A/OpenScripting
    0x7fffa17c5000 -     0x7fffa17c6ff3  com.apple.print.framework.Print (12 - 267) <E2F82F1F-DC27-3EF0-9F75-B354F701450A> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/A/Print
    0x7fffa17c7000 -     0x7fffa17c9ff7  com.apple.securityhi (9.0 - 55006) <40A702B9-647D-3A6B-8131-B3BCF969CDFA> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SecurityHI.framework/Versions/A/SecurityHI
    0x7fffa17ca000 -     0x7fffa17d0ff7  com.apple.speech.recognition.framework (6.0.1 - 6.0.1) <082895DC-3AC7-3DEF-ADCA-5B018C19C9D3> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecognition.framework/Versions/A/SpeechRecognition
    0x7fffa18b1000 -     0x7fffa18b1fff  com.apple.Cocoa (6.11 - 22) <85EDFBE1-75F0-369E-8CA8-C6A639B98FA6> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
    0x7fffa19fb000 -     0x7fffa1a88fff  com.apple.audio.CoreAudio (4.3.0 - 4.3.0) <78767F88-91D4-31CE-AAC6-1F9407F479BB> /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
    0x7fffa1a89000 -     0x7fffa1a9cfff  com.apple.CoreBluetooth (1.0 - 1) <BCB78777-76F0-3CC1-8443-9E61AEF7EF63> /System/Library/Frameworks/CoreBluetooth.framework/Versions/A/CoreBluetooth
    0x7fffa1a9d000 -     0x7fffa1d98fff  com.apple.CoreData (120 - 754.2) <4C9CAB2C-60D4-3694-A0A0-5B04B14BD14E> /System/Library/Frameworks/CoreData.framework/Versions/A/CoreData
    0x7fffa1d99000 -     0x7fffa1e46ff7  com.apple.CoreDisplay (1.0 - 1) <53D1EAFE-23A4-398D-BF52-E4299E670DB6> /System/Library/Frameworks/CoreDisplay.framework/Versions/A/CoreDisplay
    0x7fffa1e47000 -     0x7fffa22e0ff7  com.apple.CoreFoundation (6.9 - 1349.92) <6D0D0311-7C61-3313-BC55-22B7E876BEFA> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
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    0x7fffb49eb000 -     0x7fffb4ab1ff7  com.apple.TextureIO (2.8 - 2.8) <3D61E533-4156-3B21-B7ED-CB823E680DFC> /System/Library/PrivateFrameworks/TextureIO.framework/Versions/A/TextureIO
    0x7fffb4b25000 -     0x7fffb4b26fff  com.apple.TrustEvaluationAgent (2.0 - 28.50.1) <EBE65DD5-1732-3747-8C6C-7BECEBF089A4> /System/Library/PrivateFrameworks/TrustEvaluationAgent.framework/Versions/A/TrustEvaluationAgent
    0x7fffb4b27000 -     0x7fffb4cb7ff3  com.apple.UIFoundation (1.0 - 490.7) <2A3063FE-1790-3510-8A0E-AEC581D42B7E> /System/Library/PrivateFrameworks/UIFoundation.framework/Versions/A/UIFoundation
    0x7fffb5786000 -     0x7fffb5846fff  com.apple.ViewBridge (283 - 283) <25A635B3-C87C-3D3A-ADF3-539713FA1048> /System/Library/PrivateFrameworks/ViewBridge.framework/Versions/A/ViewBridge
    0x7fffb5c91000 -     0x7fffb5c97fff  com.apple.XPCService (2.0 - 1) <4B28B225-2105-33F4-9ED0-F04288FF4FB1> /System/Library/PrivateFrameworks/XPCService.framework/Versions/A/XPCService
    0x7fffb5d68000 -     0x7fffb5d6affb  com.apple.loginsupport (1.0 - 1) <F3140B97-12C3-35A7-9D3D-43DA2D13C113> /System/Library/PrivateFrameworks/login.framework/Versions/A/Frameworks/loginsupport.framework/Versions/A/loginsupport
    0x7fffb5dbf000 -     0x7fffb5ddaff7  libCRFSuite.dylib (34) <F78B7F5F-0B4F-35C6-AA2F-84EE9CB22137> /usr/lib/libCRFSuite.dylib
    0x7fffb5ddb000 -     0x7fffb5de6fff  libChineseTokenizer.dylib (21) <0886E908-A825-36AF-B94B-2361FD8BC2A1> /usr/lib/libChineseTokenizer.dylib
    0x7fffb5e78000 -     0x7fffb5e79ff3  libDiagnosticMessagesClient.dylib (102) <84A04D24-0E60-3810-A8C0-90A65E2DF61A> /usr/lib/libDiagnosticMessagesClient.dylib
    0x7fffb5e7a000 -     0x7fffb608dfff  libFosl_dynamic.dylib (16.39) <E22A4243-D148-3C74-BA15-2D906A3D1F9E> /usr/lib/libFosl_dynamic.dylib
    0x7fffb60a9000 -     0x7fffb60b0fff  libMatch.1.dylib (27) <70D4BD2A-9383-37F2-B0D6-9B592D236601> /usr/lib/libMatch.1.dylib
    0x7fffb60b1000 -     0x7fffb60b1fff  libOpenScriptingUtil.dylib (172.1) <0F1BA407-97D1-36F6-882D-A355EAAD5E00> /usr/lib/libOpenScriptingUtil.dylib
    0x7fffb60b2000 -     0x7fffb60b6ffb  libScreenReader.dylib (477.40.6) <CBE6420C-EF60-3ACD-A0B6-7CBE936BA3B8> /usr/lib/libScreenReader.dylib
    0x7fffb60b7000 -     0x7fffb60b8ffb  libSystem.B.dylib (1238.60.2) <398AD695-BD0B-3811-8AA2-38181CA23E81> /usr/lib/libSystem.B.dylib
    0x7fffb6124000 -     0x7fffb614fff3  libarchive.2.dylib (41.70.2) <907D1FB1-9A65-33F5-AFC8-0B6E5AE9D83A> /usr/lib/libarchive.2.dylib
    0x7fffb6150000 -     0x7fffb61ccfc7  libate.dylib (1.12.13) <D0767875-D02E-3377-84D8-5F174C27BEA9> /usr/lib/libate.dylib
    0x7fffb61d0000 -     0x7fffb61d0ff3  libauto.dylib (187) <34388D0B-C539-3C1B-9408-2BC152162E43> /usr/lib/libauto.dylib
    0x7fffb61d1000 -     0x7fffb61e1ff3  libbsm.0.dylib (34) <20084796-B04D-3B35-A003-EA11459557A9> /usr/lib/libbsm.0.dylib
    0x7fffb61e2000 -     0x7fffb61f0ff7  libbz2.1.0.dylib (38) <ADFA329A-DCE7-356D-8F09-A3168DFC6610> /usr/lib/libbz2.1.0.dylib
    0x7fffb61f1000 -     0x7fffb6247ff7  libc++.1.dylib (307.5) <0B43BB5D-E6EB-3464-8DE9-B41AC8ED9D1C> /usr/lib/libc++.1.dylib
    0x7fffb6248000 -     0x7fffb6271ff7  libc++abi.dylib (307.4) <BC271AD3-831B-362A-9DA7-E8C51F285FE4> /usr/lib/libc++abi.dylib
    0x7fffb6272000 -     0x7fffb6282ffb  libcmph.dylib (6) <2B5D405E-2D0B-3320-ABD6-622934C86ABE> /usr/lib/libcmph.dylib
    0x7fffb6283000 -     0x7fffb6299fcf  libcompression.dylib (39) <F2726F95-F54E-3B21-BCB5-F7151DEFDC2F> /usr/lib/libcompression.dylib
    0x7fffb629a000 -     0x7fffb629aff7  libcoretls.dylib (121.50.4) <64B1001E-10F6-3542-A3B2-C4B49F51817F> /usr/lib/libcoretls.dylib
    0x7fffb629b000 -     0x7fffb629cff3  libcoretls_cfhelpers.dylib (121.50.4) <1A10303E-5EB0-3C7C-9165-021FCDFD934D> /usr/lib/libcoretls_cfhelpers.dylib
    0x7fffb6356000 -     0x7fffb643aff7  libcrypto.0.9.8.dylib (64.50.7) <B34BC0FA-18ED-37C5-9D46-393803CADEBB> /usr/lib/libcrypto.0.9.8.dylib
    0x7fffb65d8000 -     0x7fffb662bff7  libcups.2.dylib (450.2) <5CEE3B77-95D9-346D-8A7B-4EB04BFE1610> /usr/lib/libcups.2.dylib
    0x7fffb66a8000 -     0x7fffb66a8fff  libenergytrace.dylib (15) <A1B040A2-7977-3097-9ADF-34FF181EB970> /usr/lib/libenergytrace.dylib
    0x7fffb66b8000 -     0x7fffb66bdff7  libheimdal-asn1.dylib (498.50.9) <92C953A2-5E1D-39E9-875E-92F29A12D6FB> /usr/lib/libheimdal-asn1.dylib
    0x7fffb66be000 -     0x7fffb67b0ff7  libiconv.2.dylib (50) <42125B35-81D7-3FC4-9475-A26DBE10884D> /usr/lib/libiconv.2.dylib
    0x7fffb67b1000 -     0x7fffb69d6ffb  libicucore.A.dylib (57167.0.1) <E720801C-2D92-3108-B853-469551EDF21F> /usr/lib/libicucore.A.dylib
    0x7fffb69dc000 -     0x7fffb69ddfff  liblangid.dylib (126) <2085E7A7-9A34-3735-87F4-F174EF8EABF0> /usr/lib/liblangid.dylib
    0x7fffb69de000 -     0x7fffb69f7ffb  liblzma.5.dylib (10) <44BD0279-99DD-36B5-8A6E-C11432E2098D> /usr/lib/liblzma.5.dylib
    0x7fffb69f8000 -     0x7fffb6a0eff7  libmarisa.dylib (5) <9030D214-5D0F-30CB-AC03-902C63909362> /usr/lib/libmarisa.dylib
    0x7fffb6a0f000 -     0x7fffb6cb7ff7  libmecabra.dylib (744.8) <D429FCC9-42A4-38B3-8784-44024BC859EF> /usr/lib/libmecabra.dylib
    0x7fffb6cea000 -     0x7fffb6d64ff3  libnetwork.dylib (856.60.1) <191E99F5-4723-3180-8013-02AF2F9AE4B8> /usr/lib/libnetwork.dylib
    0x7fffb6d65000 -     0x7fffb7137047  libobjc.A.dylib (709.1) <70614861-0340-32E2-85ED-FE65759CDFFA> /usr/lib/libobjc.A.dylib
    0x7fffb713a000 -     0x7fffb713efff  libpam.2.dylib (21.30.1) <71EB0D88-DE84-3C8D-A2C5-58AA282BC5BC> /usr/lib/libpam.2.dylib
    0x7fffb713f000 -     0x7fffb7170fff  libpcap.A.dylib (67.60.2) <B2D36AD8-D5C8-3875-AC81-4787A15E44C2> /usr/lib/libpcap.A.dylib
    0x7fffb718d000 -     0x7fffb71a9ffb  libresolv.9.dylib (64) <A244AE4C-00B0-396C-98FF-97FE4DB3DA30> /usr/lib/libresolv.9.dylib
    0x7fffb71aa000 -     0x7fffb71e3fff  libsandbox.1.dylib (592.70.2) <5C1CF889-55B2-3955-965E-7AD78AB5AF19> /usr/lib/libsandbox.1.dylib
    0x7fffb71f9000 -     0x7fffb7347ff7  libsqlite3.dylib (254.8) <1ECF7DF7-7A07-3B4B-A63B-F4EFF6BC7ACF> /usr/lib/libsqlite3.dylib
    0x7fffb743c000 -     0x7fffb7449fff  libxar.1.dylib (357) <69547C64-E811-326F-BBED-490C6361BDCB> /usr/lib/libxar.1.dylib
    0x7fffb744a000 -     0x7fffb7539ff3  libxml2.2.dylib (30.21) <DD2A0C0A-A4C8-3979-91C4-DF20CE70C3E8> /usr/lib/libxml2.2.dylib
    0x7fffb753a000 -     0x7fffb7563fff  libxslt.1.dylib (15.9.1) <A1EFC225-2115-3710-A2FD-B11FDE15B01F> /usr/lib/libxslt.1.dylib
    0x7fffb7564000 -     0x7fffb7575ff3  libz.1.dylib (67) <46E3FFA2-4328-327A-8D34-A03E20BFFB8E> /usr/lib/libz.1.dylib
    0x7fffb7584000 -     0x7fffb7588ff7  libcache.dylib (79) <093A4DAB-8385-3D47-A350-E20CB7CCF7BF> /usr/lib/system/libcache.dylib
    0x7fffb7589000 -     0x7fffb7593fff  libcommonCrypto.dylib (60092.50.5) <7F51EFD6-F634-3F9E-AAA1-A508AEDC2F86> /usr/lib/system/libcommonCrypto.dylib
    0x7fffb7594000 -     0x7fffb759bfff  libcompiler_rt.dylib (62) <55D47421-772A-32AB-B529-1A46C2F43B4D> /usr/lib/system/libcompiler_rt.dylib
    0x7fffb759c000 -     0x7fffb75a4fff  libcopyfile.dylib (138) <819BEA3C-DF11-3E3D-A1A1-5A51C5BF1961> /usr/lib/system/libcopyfile.dylib
    0x7fffb75a5000 -     0x7fffb7628fdf  libcorecrypto.dylib (442.50.20) <913FA596-8583-3C28-BCD2-72C3B7692477> /usr/lib/system/libcorecrypto.dylib
    0x7fffb7629000 -     0x7fffb765afff  libdispatch.dylib (703.50.37) <6582BAD6-ED27-3B30-B620-90B1C5A4AE3C> /usr/lib/system/libdispatch.dylib
    0x7fffb765b000 -     0x7fffb7660ffb  libdyld.dylib (433.5) <39221E16-98D7-3368-BF23-E38FC9520F5C> /usr/lib/system/libdyld.dylib
    0x7fffb7661000 -     0x7fffb7661ffb  libkeymgr.dylib (28) <7AA011A9-DC21-3488-BF73-3B5B14D1FDD6> /usr/lib/system/libkeymgr.dylib
    0x7fffb7662000 -     0x7fffb766efff  libkxld.dylib (3789.73.14) <63DC2D85-A872-3C22-91E0-E1C389023146> /usr/lib/system/libkxld.dylib
    0x7fffb766f000 -     0x7fffb766ffff  liblaunch.dylib (972.70.2) <DB690F9D-4A72-38F3-A82C-44E7B27BE4C9> /usr/lib/system/liblaunch.dylib
    0x7fffb7670000 -     0x7fffb7675ff3  libmacho.dylib (898) <17D5D855-F6C3-3B04-B680-E9BF02EF8AED> /usr/lib/system/libmacho.dylib
    0x7fffb7676000 -     0x7fffb7678ff3  libquarantine.dylib (85.50.1) <12448CC2-378E-35F3-BE33-9DC395A5B970> /usr/lib/system/libquarantine.dylib
    0x7fffb7679000 -     0x7fffb767affb  libremovefile.dylib (45) <38D4CB9C-10CD-30D3-8B7B-A515EC75FE85> /usr/lib/system/libremovefile.dylib
    0x7fffb767b000 -     0x7fffb7693ff7  libsystem_asl.dylib (349.50.5) <096E4228-3B7C-30A6-8B13-EC909A64499A> /usr/lib/system/libsystem_asl.dylib
    0x7fffb7694000 -     0x7fffb7694ff7  libsystem_blocks.dylib (67) <10DC5404-73AB-35B3-A277-A8AFECB476EB> /usr/lib/system/libsystem_blocks.dylib
    0x7fffb7695000 -     0x7fffb7722fef  libsystem_c.dylib (1158.50.2) <E5AE5244-7D0C-36AC-8BB6-C7AE7EA52A4B> /usr/lib/system/libsystem_c.dylib
    0x7fffb7723000 -     0x7fffb7726ffb  libsystem_configuration.dylib (888.60.2) <BECC01A2-CA8D-31E6-BCDF-D452965FA976> /usr/lib/system/libsystem_configuration.dylib
    0x7fffb7727000 -     0x7fffb772afff  libsystem_coreservices.dylib (41.4) <7D26DE79-B424-3450-85E1-F7FAB32714AB> /usr/lib/system/libsystem_coreservices.dylib
    0x7fffb772b000 -     0x7fffb7743fff  libsystem_coretls.dylib (121.50.4) <EC6FCF07-DCFB-3A03-9CC9-6DD3709974C6> /usr/lib/system/libsystem_coretls.dylib
    0x7fffb7744000 -     0x7fffb774afff  libsystem_dnssd.dylib (765.50.10) <0999444C-8148-3557-AC22-F5659D15FA62> /usr/lib/system/libsystem_dnssd.dylib
    0x7fffb774b000 -     0x7fffb7774ff7  libsystem_info.dylib (503.50.4) <611DB84C-BF70-3F92-8702-B9F28A900920> /usr/lib/system/libsystem_info.dylib
    0x7fffb7775000 -     0x7fffb7797ff7  libsystem_kernel.dylib (3789.73.14) <BD75234C-529F-352C-A941-00C45D1DB1A3> /usr/lib/system/libsystem_kernel.dylib
    0x7fffb7798000 -     0x7fffb77dffe7  libsystem_m.dylib (3121.6) <86D499B5-BBDC-3D3B-8A4E-97AE8E6672A4> /usr/lib/system/libsystem_m.dylib
    0x7fffb77e0000 -     0x7fffb77feff7  libsystem_malloc.dylib (116.50.8) <A3D15F17-99A6-3367-8C7E-4280E8619C95> /usr/lib/system/libsystem_malloc.dylib
    0x7fffb77ff000 -     0x7fffb7858ffb  libsystem_network.dylib (856.60.1) <369D0221-56CA-3C3E-9EDE-94B41CAE77B7> /usr/lib/system/libsystem_network.dylib
    0x7fffb7859000 -     0x7fffb7862ff3  libsystem_networkextension.dylib (563.60.2) <B021F2B3-8A75-3633-ABB0-FC012B8E9B0C> /usr/lib/system/libsystem_networkextension.dylib
    0x7fffb7863000 -     0x7fffb786cff3  libsystem_notify.dylib (165.20.1) <B8160190-A069-3B3A-BDF6-2AA408221FAE> /usr/lib/system/libsystem_notify.dylib
    0x7fffb786d000 -     0x7fffb7875fe7  libsystem_platform.dylib (126.50.8) <897462FD-B318-321B-A554-E61982630F7E> /usr/lib/system/libsystem_platform.dylib
    0x7fffb7876000 -     0x7fffb7880ff7  libsystem_pthread.dylib (218.60.3) <B8FB5E20-3295-39E2-B5EB-B464D1D4B104> /usr/lib/system/libsystem_pthread.dylib
    0x7fffb7881000 -     0x7fffb7884ff7  libsystem_sandbox.dylib (592.70.2) <19320A42-2E3B-361B-BBDA-2F5F2E87B100> /usr/lib/system/libsystem_sandbox.dylib
    0x7fffb7885000 -     0x7fffb7886ff3  libsystem_secinit.dylib (24.50.4) <F78B847B-3565-3E4B-98A6-F7AD40392E2D> /usr/lib/system/libsystem_secinit.dylib
    0x7fffb7887000 -     0x7fffb788effb  libsystem_symptoms.dylib (532.50.47) <3390E07C-C1CE-348F-ADBD-2C5440B45EAA> /usr/lib/system/libsystem_symptoms.dylib
    0x7fffb788f000 -     0x7fffb78a2ff7  libsystem_trace.dylib (518.70.1) <AC63A7FE-50D9-3A30-96E6-F6B7FF16E465> /usr/lib/system/libsystem_trace.dylib
    0x7fffb78a3000 -     0x7fffb78a8ffb  libunwind.dylib (35.3) <3D50D8A8-C460-334D-A519-2DA841102C6B> /usr/lib/system/libunwind.dylib
    0x7fffb78a9000 -     0x7fffb78d2ff7  libxpc.dylib (972.70.2) <ABC3BB29-BCE6-3E50-8A71-4E56AEE28991> /usr/lib/system/libxpc.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 31232
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=258.3M resident=0K(0%) swapped_out_or_unallocated=258.3M(100%)
Writable regions: Total=107.5M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=107.5M(100%)
 
                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Accelerate framework               256K        3 
Activity Tracing                   256K        2 
CG backing stores                 1576K        3 
CG image                          4176K        7 
CoreAnimation                       56K        8 
CoreUI image data                 1388K       11 
CoreUI image file                  184K        5 
Dispatch continuations            8192K        2 
Image IO                            12K        2 
Kernel Alloc Once                    8K        2 
MALLOC                            66.8M       28 
MALLOC guard page                   48K       10 
Memory Tag 242                      12K        2 
Memory Tag 251                      12K        2 
STACK GUARD                       56.0M        5 
Stack                             9300K        5 
VM_ALLOCATE                        328K       14 
__DATA                            21.5M      235 
__GLSLBUILTINS                    2588K        2 
__IMAGE                            528K        2 
__LINKEDIT                       116.5M       19 
__TEXT                           141.8M      233 
__UNICODE                          556K        2 
mapped file                       44.9M       14 
shared memory                     16.3M       12 
===========                     =======  ======= 
TOTAL                            492.7M      605 

--------------------------End of crash log------------------------------

The compiler used is clang:
Apple LLVM version 9.0.0 (clang-900.0.39.2)
Target: x86_64-apple-darwin16.7.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

Upon compiling 8.7, the compiler emitted some deprecation warnings. 
The first is perhaps relevant, the latter two probably not:

tcl/pkgs/sqlite3.9.2/generic/../compat/sqlite3/sqlite3.c:18048:17: warning: 'OSAtomicCompareAndSwapPtrBarrier'
      is deprecated: first deprecated in macOS 10.12 - Use atomic_compare_exchange_strong() from <stdatomic.h> instead [-Wdeprecated-declarations]
      success = OSAtomicCompareAndSwapPtrBarrier(NULL, newzone, 
                ^
/usr/include/libkern/OSAtomicDeprecated.h:547:6: note: 'OSAtomicCompareAndSwapPtrBarrier' has been explicitly marked deprecated here
bool    OSAtomicCompareAndSwapPtrBarrier( void *__oldValue, void *__newValue, void * volatile *__theValue );
        ^


tcl/macosx/tclMacOSXNotify.c:85:27: note: expanded from macro 'SpinLockUnlock'
#define SpinLockUnlock(p)       OSSpinLockUnlock(p)
                                ^
/usr/include/libkern/OSSpinLockDeprecated.h:105:9: note: 'OSSpinLockUnlock' has been explicitly marked deprecated here
void    OSSpinLockUnlock( volatile OSSpinLock *__lock );
        ^
tcl/macosx/tclMacOSXNotify.c:1271:5: warning: 'OSSpinLockLock' is deprecated: first deprecated in macOS 10.12 -
      Use os_unfair_lock_lock() from <os/lock.h> instead [-Wdeprecated-declarations]
    LOCK_NOTIFIER_TSD;
    ^
tcl/macosx/tclMacOSXNotify.c:121:27: note: expanded from macro 'LOCK_NOTIFIER_TSD'
#define LOCK_NOTIFIER_TSD       SpinLockLock(&tsdPtr->tsdLock)
                                ^
tcl/macosx/tclMacOSXNotify.c:84:26: note: expanded from macro 'SpinLockLock'
#define SpinLockLock(p)         OSSpinLockLock(p)
                                ^
/usr/include/libkern/OSSpinLockDeprecated.h:99:9: note: 'OSSpinLockLock' has been explicitly marked deprecated here
void    OSSpinLockLock( volatile OSSpinLock *__lock );
        ^
tcl/macosx/tclMacOSXNotify.c:1273:5: warning: 'OSSpinLockUnlock' is deprecated: first deprecated in macOS 10.12
      - Use os_unfair_lock_unlock() from <os/lock.h> instead [-Wdeprecated-declarations]
    UNLOCK_NOTIFIER_TSD;
    ^

Finally, it seems the pkgs/ build mechanisms are not as well integrated as they ought to be, on two accounts:
1. I experienced problems with old (no longer existing) paths being cached in these directories, 
and this caching even caused `make distclean` to fail. (Had to manually locate and delete Makefile and config.status files.)
2. The tests for the pkgs/ required Tcl 8.7 to have been installed, not just built. A ticket I encountered 
while searching for previous reports of the segfault bug seemed to suggest that this defect had been 
fixed, but apparently not in core-8-branch.