With info-6.4-5.fc27.x86_64, I got # info as ... regexp error: Invalid preceding regular expression[1] 25768 segmentation fault info as when I search for "{".
Reproduced. This should be fixed in upstream version 6.5. I'll look at the possibility of backport.
*** Bug 1520212 has been marked as a duplicate of this bug. ***
texinfo-6.4-6.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-f6ae4147be
Similar problem has been detected: I ran "info as", then typed Ctrl-S followed by "\", at which point the segfault occurred. This text was printed on the console: regexp error: Trailing backslashSegmentation fault (core dumped) reporter: libreport-2.9.3 backtrace_rating: 4 cmdline: info as crash_function: free_matches executable: /usr/bin/info journald_cursor: s=4cf9f15d268c438d9a238802622c0358;i=4ec48;b=f6b148802b3947c0862794c6c9f55d32;m=2a8e7d537;t=55f879666183e;x=5dd12567430522ea kernel: 4.13.16-300.fc27.x86_64 package: info-6.4-5.fc27 reason: info killed by SIGSEGV rootdir: / runlevel: N 5 type: CCpp uid: 1000
Created attachment 1362789 [details] File: backtrace
(In reply to Jerry James from comment #4) > Similar problem has been detected: > > I ran "info as", then typed Ctrl-S followed by "\", at which point the > segfault occurred. This text was printed on the console: > > regexp error: Trailing backslashSegmentation fault (core dumped) > > reporter: libreport-2.9.3 > backtrace_rating: 4 > cmdline: info as > crash_function: free_matches > executable: /usr/bin/info > journald_cursor: > s=4cf9f15d268c438d9a238802622c0358;i=4ec48; > b=f6b148802b3947c0862794c6c9f55d32;m=2a8e7d537;t=55f879666183e; > x=5dd12567430522ea > kernel: 4.13.16-300.fc27.x86_64 > package: info-6.4-5.fc27 > reason: info killed by SIGSEGV > rootdir: / > runlevel: N 5 > type: CCpp > uid: 1000 Thanks for the bug report! Have you had a chance to test the updated package (texinfo-6.4-6.fc27)? It should fix your issue.
(In reply to Vitezslav Crhonek from comment #6) > Thanks for the bug report! Have you had a chance to test the updated package > (texinfo-6.4-6.fc27)? It should fix your issue. That does indeed fix the problem. Thanks for the update! I'll leave karma.
Similar problem has been detected: I wanted to learn about bash for loops, so I did 'info bash', then typed '/for ((' (forgetting that it uses BRE which requires '\(' instead of ERE's plain '('). I got: regexp error: Unmatched ( or \(Segmentation fault (core dumped) reporter: libreport-2.9.3 backtrace_rating: 4 cmdline: info bash crash_function: free_matches executable: /usr/bin/info journald_cursor: s=ce989946da0d4e73bc4ce367fc5b77cd;i=69c838;b=985a4eb7b36e4ab8b963465cc49ee96a;m=90774277e6;t=55fda68c6cd08;x=be25456ddc7ddb8c kernel: 4.13.16-300.fc27.x86_64 package: info-6.4-5.fc27 reason: info killed by SIGSEGV rootdir: / runlevel: N 5 type: CCpp uid: 14986
texinfo-6.4-6.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-f6ae4147be
texinfo-6.4-6.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.