bash: Ctrl + R, then Ctrl + C crashes

[tgckpg]

Demo

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brew gist-logs <formula> link OR brew config AND brew doctor output

## Bash version

$ bash --version
GNU bash, version 5.3.0(1)-release (aarch64-apple-darwin24.4.0)
Copyright (C) 2025 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.


## Crash report from Console.app


-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               bash [61769]
Path:                  /opt/homebrew/*/bash
Identifier:            bash
Version:               ???
Code Type:             ARM-64 (Native)
Parent Process:        Exited process [61761]
Responsible:           Terminal [61046]
User ID:               501

Date/Time:             2025-07-24 09:35:12.9655 +0800
OS Version:            macOS 15.5 (24F74)
Report Version:        12
Anonymous UUID:        875DC121-765D-3C39-DDC3-46AD44E82C87

Sleep/Wake UUID:       7536582C-38FA-45EA-ADF8-C558F29C6827

Time Awake Since Boot: 330000 seconds
Time Since Wake:       581 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 Codes:       0x0000000000000001, 0x0000000000000000

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   bash [61769]

VM Region Info: 0 is not in any region.  Bytes before following region: 4365205504
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      1042fc000-1043a4000    [  672K] r-x/r-x SM=COW  /opt/homebrew/*/bash

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x18bd98da4 __kill + 8
1   bash                          	       0x104347608 kill_shell + 72
2   bash                          	       0x104347870 termsig_handler + 444
3   bash                          	       0x104347160 termsig_sighandler + 140
4   libsystem_platform.dylib      	       0x18be0c624 _sigtramp + 56
5   libreadline.8.3.dylib         	       0x1044458ac update_line + 3252
6   libreadline.8.3.dylib         	       0x10444388c rl_redisplay + 6092
7   libreadline.8.3.dylib         	       0x104447360 rl_clear_message + 68
8   libreadline.8.3.dylib         	       0x10444201c _rl_isearch_cleanup + 228
9   libreadline.8.3.dylib         	       0x1044485f8 rl_free_line_state + 28
10  libreadline.8.3.dylib         	       0x104447fa0 _rl_signal_handler + 280
11  libreadline.8.3.dylib         	       0x104443678 rl_redisplay + 5560
12  libreadline.8.3.dylib         	       0x104447360 rl_clear_message + 68
13  libreadline.8.3.dylib         	       0x10444201c _rl_isearch_cleanup + 228
14  libreadline.8.3.dylib         	       0x104432404 _rl_dispatch_subseq + 892
15  libreadline.8.3.dylib         	       0x104431d64 readline_internal_char + 636
16  libreadline.8.3.dylib         	       0x1044313d0 readline + 96
17  bash                          	       0x104302d98 yy_readline_get + 208
18  bash                          	       0x104308c6c shell_getc + 488
19  bash                          	       0x104306270 read_token + 260
20  bash                          	       0x104301420 yyparse + 524
21  bash                          	       0x1043011ac parse_command + 384
22  bash                          	       0x104300e74 read_command + 220
23  bash                          	       0x104300bc8 reader_loop + 532
24  bash                          	       0x1042ff6a4 main + 4772
25  dyld                          	       0x18ba32b98 start + 6076

Thread 1:
0   libsystem_pthread.dylib       	       0x18bdcdb6c start_wqthread + 0

Thread 2:
0   libsystem_pthread.dylib       	       0x18bdcdb6c start_wqthread + 0


Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x0000000000000001   x3: 0x0000000000000004
    x4: 0x0000000000000058   x5: 0x0000000000000054   x6: 0x0000000000000000   x7: 0x00000000000007d0
    x8: 0x00000001043470d4   x9: 0x00000001f9eec518  x10: 0x00000000000003ff  x11: 0x0000000000002620
   x12: 0x00000000000007fb  x13: 0x00000000000007fd  x14: 0x00000000f3e6ca63  x15: 0x00000000f3c6c2df
   x16: 0x0000000000000025  x17: 0x00000001faf32008  x18: 0x0000000000000000  x19: 0x000000000000000b
   x20: 0x00000001043aab04  x21: 0x00000001f9ef5000  x22: 0x0000000142030000  x23: 0x000000014202ce00
   x24: 0x0000000142030000  x25: 0x0000000104465c38  x26: 0x0000000000000000  x27: 0x000000014202ce01
   x28: 0x0000000142030000   fp: 0x000000016bb013c0   lr: 0x0000000104347608
    sp: 0x000000016bb01380   pc: 0x000000018bd98da4 cpsr: 0x00001000
   far: 0x0000000000000000  esr: 0x56000080  Address size fault

Binary Images:
       0x1042fc000 -        0x1043a3fff bash (*) <55599a93-5151-3002-962d-90aefb871d2d> /opt/homebrew/*/bash
       0x104430000 -        0x10445bfff libreadline.8.3.dylib (*) <7083228d-f0d2-3ae4-9765-ab144a7c41b8> /opt/homebrew/*/libreadline.8.3.dylib
       0x1043f8000 -        0x1043fffff libhistory.8.3.dylib (*) <999477fc-c3c0-3e21-8df8-be14b9d2e6b4> /opt/homebrew/*/libhistory.8.3.dylib
       0x104538000 -        0x104573fff libncursesw.6.dylib (*) <71e9646b-7749-3bf7-8a0e-9027973ea8d8> /opt/homebrew/*/libncursesw.6.dylib
       0x104590000 -        0x1045b7fff libintl.8.dylib (*) <9414c162-5ccc-3b6d-8a0d-c7c743f7fec1> /opt/homebrew/*/libintl.8.dylib
       0x18bd90000 -        0x18bdcb653 libsystem_kernel.dylib (*) <60485b6f-67e5-38c1-aec9-efd6031ff166> /usr/lib/system/libsystem_kernel.dylib
       0x18be09000 -        0x18be10b4f libsystem_platform.dylib (*) <519f3220-7499-334a-96d6-ccf3dc28f986> /usr/lib/system/libsystem_platform.dylib
       0x18ba2c000 -        0x18bac74cf dyld (*) <9cf0401a-a938-389e-a77d-9e9608076ccf> /usr/lib/dyld
               0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
       0x18bdcc000 -        0x18bdd8a47 libsystem_pthread.dylib (*) <647b91fc-96d3-3bbb-af08-970df45257c8> /usr/lib/system/libsystem_pthread.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: 0
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=846.0M resident=0K(0%) swapped_out_or_unallocated=846.0M(100%)
Writable regions: Total=804.8M written=289K(0%) resident=289K(0%) swapped_out=0K(0%) unallocated=804.5M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Kernel Alloc Once                   32K        1 
MALLOC                           795.2M       17 
MALLOC guard page                   96K        6 
STACK GUARD                       56.0M        3 
Stack                             9264K        3 
__AUTH                             822K      166 
__AUTH_CONST                      12.8M      299 
__DATA                            3337K      280 
__DATA_CONST                      10.8M      303 
__DATA_DIRTY                       452K       88 
__FONT_DATA                        2352        1 
__LINKEDIT                       615.8M        6 
__OBJC_RO                         61.4M        1 
__OBJC_RW                         2396K        1 
__TEXT                           230.2M      314 
__TPRO_CONST                       128K        2 
mapped file                        160K        2 
page table in kernel               289K        1 
shared memory                       80K        4 
===========                     =======  ======= 
TOTAL                              1.8G     1499 



-----------
Full Report
-----------

{"app_name":"bash","timestamp":"2025-07-24 09:35:13.00 +0800","app_version":"","slice_uuid":"55599a93-5151-3002-962d-90aefb871d2d","build_version":"","platform":1,"share_with_app_devs":1,"is_first_party":1,"bug_type":"309","os_version":"macOS 15.5 (24F74)","roots_installed":0,"incident_id":"90A7047D-DB64-4393-8040-3B6E7D6D74BD","name":"bash"}
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  "codeSigningTeamID" : "",
  "codeSigningFlags" : 570425857,
  "codeSigningValidationCategory" : 10,
  "codeSigningTrustLevel" : 4294967295,
  "codeSigningAuxiliaryInfo" : 0,
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}

Verification

• My brew doctor output says Your system is ready to brew. and am still able to reproduce my issue.
• I ran brew update and am still able to reproduce my issue.
• I have resolved all warnings from brew doctor and that did not fix my problem.
• I searched for recent similar issues at https://github.com/Homebrew/homebrew-core/issues?q=is%3Aissue and found no duplicates.

What were you trying to do (and why)?

Ctrl + R, then Ctrl + C

What happened (include all command output)?

Segfault

What did you expect to happen?

no segfault

Step-by-step reproduction instructions (by running brew commands)

Ctrl + R, then Ctrl + C

[carlocab]

What's the output of

brew config
brew doctor
brew info bash

?

[tgckpg]

Brew config

HOMEBREW_VERSION: 4.5.12
ORIGIN: https://github.com/Homebrew/brew
HEAD: 50fa89e96bccedeca21287427eb7db12289f57ea
Last commit: 5 hours ago
Branch: stable
Core tap JSON: 24 Jul 01:29 UTC
Core cask tap JSON: 24 Jul 01:29 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: vim
HOMEBREW_MAKE_JOBS: 10
Homebrew Ruby: 3.4.5 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.5/bin/ruby
CPU: deca-core 64-bit arm_firestorm_icestorm
Clang: 17.0.0 build 1700
Git: 2.50.1 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.5-arm64
CLT: 16.4.0.0.1.1747106510
Xcode: 16.4
Rosetta 2: false

brew doctor

$ brew doctor
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  icu4c@76

Warning: The following formulae have the same name as core formulae:
  osx-cross/arm/arm-none-eabi-binutils

brew info bash

$ brew info bash
==> bash: stable 5.3 (bottled), HEAD
Bourne-Again SHell, a UNIX command interpreter
https://www.gnu.org/software/bash/
Installed
/opt/homebrew/Cellar/bash/5.3_1 (172 files, 13.1MB) *
  Poured from bottle using the formulae.brew.sh API on 2025-07-24 at 09:35:01
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/b/bash.rb
License: GPL-3.0-or-later
==> Dependencies
Required: ncurses ✔, readline ✔, gettext ✔
==> Options
--HEAD
	Install HEAD version
==> Caveats
DEFAULT_LOADABLE_BUILTINS_PATH: /opt/homebrew/lib/bash:/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
==> Analytics
install: 49,004 (30 days), 92,684 (90 days), 438,049 (365 days)
install-on-request: 30,340 (30 days), 53,683 (90 days), 260,790 (365 days)
build-error: 20 (30 days)

[carlocab]

Can't reproduce, I'm afraid. It might be worth trying

brew update
brew upgrade

as I think there have been updates to bash/gettext/readline since you opened this issue.

[tgckpg]

Just upgraded to bash 5.3.3, still getting the segfault

brew info bash

==> bash: stable 5.3.3 (bottled), HEAD
Bourne-Again SHell, a UNIX command interpreter
https://www.gnu.org/software/bash/
Installed
/opt/homebrew/Cellar/bash/5.3.3 (172 files, 13.1MB) *
  Poured from bottle using the formulae.brew.sh API on 2025-07-27 at 08:16:28
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/b/bash.rb
License: GPL-3.0-or-later
==> Dependencies
Required: ncurses ✔, readline ✔, gettext ✔
==> Options
--HEAD
	Install HEAD version
==> Caveats
DEFAULT_LOADABLE_BUILTINS_PATH: /opt/homebrew/lib/bash:/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
==> Analytics
install: 57,482 (30 days), 101,652 (90 days), 445,898 (365 days)
install-on-request: 35,520 (30 days), 59,187 (90 days), 266,463 (365 days)
build-error: 19 (30 days)

And the crash report is still the same message.

Date/Time:             2025-07-27 08:16:52.0334 +0800
OS Version:            macOS 15.5 (24F74)
Report Version:        12
Anonymous UUID:        875DC121-765D-3C39-DDC3-46AD44E82C87


Time Awake Since Boot: 280 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 Codes:       0x0000000000000001, 0x0000000000000000

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   bash [4140]

VM Region Info: 0 is not in any region.  Bytes before following region: 4344725504
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      102f74000-10301c000    [  672K] r-x/r-x SM=COW  /opt/homebrew/*/bash

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x198984da4 __kill + 8
1   bash                          	       0x102fbf618 kill_shell + 72
2   bash                          	       0x102fbf880 termsig_handler + 444
3   bash                          	       0x102fbf170 termsig_sighandler + 140
4   libsystem_platform.dylib      	       0x1989f8624 _sigtramp + 56
5   libreadline.8.3.dylib         	       0x1030bd8ac update_line + 3252
6   libreadline.8.3.dylib         	       0x1030bb88c rl_redisplay + 6092
7   libreadline.8.3.dylib         	       0x1030bf360 rl_clear_message + 68
8   libreadline.8.3.dylib         	       0x1030ba01c _rl_isearch_cleanup + 228
9   libreadline.8.3.dylib         	       0x1030c05f8 rl_free_line_state + 28
10  libreadline.8.3.dylib         	       0x1030bffa0 _rl_signal_handler + 280
11  libreadline.8.3.dylib         	       0x1030bb678 rl_redisplay + 5560
12  libreadline.8.3.dylib         	       0x1030bf360 rl_clear_message + 68
13  libreadline.8.3.dylib         	       0x1030ba01c _rl_isearch_cleanup + 228
14  libreadline.8.3.dylib         	       0x1030aa404 _rl_dispatch_subseq + 892
15  libreadline.8.3.dylib         	       0x1030a9d64 readline_internal_char + 636
16  libreadline.8.3.dylib         	       0x1030a93d0 readline + 96
17  bash                          	       0x102f7ad98 yy_readline_get + 208
18  bash                          	       0x102f80c6c shell_getc + 488
19  bash                          	       0x102f7e270 read_token + 260
20  bash                          	       0x102f79420 yyparse + 524
21  bash                          	       0x102f791ac parse_command + 384
22  bash                          	       0x102f78e74 read_command + 220
23  bash                          	       0x102f78bc8 reader_loop + 532
24  bash                          	       0x102f776a4 main + 4772
25  dyld                          	       0x19861eb98 start + 6076

Thread 1:
0   libsystem_pthread.dylib       	       0x1989b9b6c start_wqthread + 0
.
.
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