[ruby-core:89267] [Ruby trunk Bug#15197] Segmentation fault in Ruby script cache_store.rb from homebrew on macOS Mojave

Issue #15197 has been reported by Dr.-Big-Man (Dr. Matthias H. Fr旦hlich).

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Bug #15197: Segmentation fault in Ruby script cache_store.rb from homebrew on macOS Mojave 
https://bugs.ruby-lang.org/issues/15197

* Author: Dr.-Big-Man (Dr. Matthias H. Fr旦hlich)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
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Execution of command 'brew doctor' from terminal (CLI) leads to Segmentation fault - complete copy of terminal output and files mentioned in the following snippet are attached:

/usr/local/Homebrew/Library/Homebrew/cache_store.rb:24: [BUG] Segmentation fault at 0x0000000105fffffe
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin9.0]

-- Crash Report log information --------------------------------------------
   See Crash Report log file under the one of following:
     * ~/Library/Logs/CrashReporter
     * /Library/Logs/CrashReporter
     * ~/Library/Logs/DiagnosticReports
     * /Library/Logs/DiagnosticReports
   for more details.
Don't forget to include the above Crash Report log file in bug reports.

-- Control frame information -----------------------------------------------
c:0021 p:---- s:0120 e:000119 CFUNC  :[]=
c:0020 p:0018 s:0115 e:000113 METHOD /usr/local/Homebrew/Library/Homebrew/cache_store.rb:24
c:0019 p:0029 s:0109 e:000108 METHOD /usr/local/Homebrew/Library/Homebrew/linkage_cache_store.rb:38
c:0018 p:0167 s:0105 E:0004e8 METHOD /usr/local/Homebrew/Library/Homebrew/linkage_checker.rb:148
c:0017 p:0187 s:0097 E:001ef8 METHOD /usr/local/Homebrew/Library/Homebrew/linkage_checker.rb:25 [FINISH]
c:0016 p:---- s:0089 e:000088 CFUNC  :new
c:0015 p:0019 s:0083 e:000082 BLOCK  /usr/local/Homebrew/Library/Homebrew/formula.rb:1790
c:0014 p:0024 s:0079 e:000078 METHOD /usr/local/Homebrew/Library/Homebrew/cache_store.rb:17
c:0013 p:0038 s:0073 e:000072 METHOD /usr/local/Homebrew/Library/Homebrew/formula.rb:1789
c:0012 p:0076 s:0068 e:000066 METHOD /usr/local/Homebrew/Library/Homebrew/formula.rb:1562
c:0011 p:0012 s:0059 e:000058 METHOD /usr/local/Homebrew/Library/Homebrew/formula.rb:1568
c:0010 p:0022 s:0053 e:000052 METHOD /usr/local/Homebrew/Library/Homebrew/formula.rb:1584
c:0009 p:0011 s:0048 e:000047 BLOCK  /usr/local/Homebrew/Library/Homebrew/diagnostic.rb:13 [FINISH]
c:0008 p:---- s:0044 e:000043 CFUNC  :each
c:0007 p:0019 s:0041 e:000040 METHOD /usr/local/Homebrew/Library/Homebrew/diagnostic.rb:12
c:0006 p:0060 s:0035 e:000034 METHOD /usr/local/Homebrew/Library/Homebrew/diagnostic.rb:652
c:0005 p:0085 s:0031 e:000030 BLOCK  /usr/local/Homebrew/Library/Homebrew/cmd/doctor.rb:46 [FINISH]
c:0004 p:---- s:0027 e:000026 CFUNC  :each
c:0003 p:0167 s:0024 e:000023 METHOD /usr/local/Homebrew/Library/Homebrew/cmd/doctor.rb:38
c:0002 p:0704 s:0017 E:0004a8 EVAL   /usr/local/Homebrew/Library/Homebrew/brew.rb:91 [FINISH]
c:0001 p:0000 s:0002 E:001d80 (none) [FINISH]

---Files--------------------------------
Log at 2018-10-03 5-59-30 PM.txt (40.3 KB)
brew.rb (4.82 KB)
cache_store.rb (4.78 KB)
ruby_2018-10-03-175028_Slivery.crash (41.4 KB)


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