ctags support is broken (sigsegv)

[yarda]

ctags support is very useful feature, but unfortunately it seems to be broken for some time. For good user experience it should work out of the box and the functionality should be documented in official docs, but at least it shouldn't segfault.

version (mc -V):
GNU Midnight Commander 4.8.4
Built with GLib 2.32.4
Using the S-Lang library with terminfo database
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm and Linux console
With internationalization support
With multiple codepages support
Virtual File Systems: cpiofs, tarfs, sfs, extfs, ftpfs, sftpfs, fish, smbfs
Data types: char: 8; int: 32; long: 64; void *: 64; size_t: 64; off_t: 64;

How to reproduce:

1. on sources: ctags -R .
2. with tags in current dir open any file (needn't be C source or headers)
3. Alt + - (i.e. alt minus or Esc + -)

Current result:
sigsegv

Expected result:
no sigsegv

Also I am unable to get this functionality to work, Alt + = or Alt + Enter or Esc + = do nothing for me.

[angel_il]

yarda: thank you for your feedback, i try fix it.

[angel_il]

branch: ​2859_mcedit_ctags_segfault

[yarda]

Thanks. What about Alt + = or Alt + Enter? Does it work for you out of the box?

[angel_il]

What do you mean?

[yarda]

Jump to definition and move forward:
​https://www.midnight-commander.org/wiki/doc/editor/codejump

They doesn't work for me out of the box and I cannot found anything specific to ctags navigation in mc docs.

[angel_il]

ok, step by step

1) create two files (a.h, a.c)
a.c

#include a.h;

int aaa;

void main ()
{
    aaa = 1;
}

a.h

extern int aaa;

2) run:

etags --language-force=c
or
find . -type f -name "*.[ch]" | ctags --c-kinds=+p --fields=+iaS --extra=+q -e -L-

(my version by ctags/etags is Exuberant Ctags 5.9~svn20110310)

3) after that you get the file TAGS

$ ls 
a.c  a.h  TAGS

4) open file a.c in mcedit
5) set cursor after word aaa
aaa<here> = 1;
6) select in the editor menu "Command" - "Find declaration M-Enter"
7) you should see the dialog like follow

╔═══════════ aaa ══════════════╗
║ aaa -> a.c:3                 ║
╚══════════════════════════════╝

8) press enter
9) must open the file a.c on line 3
10) press alt-'-' to jump back
11) press alt-'=' to jump forward

[yarda]

Thanks, PEBKAC :)

I used ctags:
$ ctags -R

but it requires etags:
$ ctags -R -e

Sorry for noise.

[angel_il]

Replying to yarda:

Thanks, PEBKAC :)

ok :))

[angel_il]

fixed: 4bfa6810696c8b00f1da044aea2b98f688c04148

[angel_il]

fixed in 4.8.1-stable: da9eda40a9e1737fdecebc2c0cfb749646026fe0