Hi,
> Unfortunately with 6.3.2-6.3.4 on CentOS 7 x86_64, gtags never creates
> a GRTAGS file larger than 16K and therefore reverse lookups always
> fail (return no output). On CentOS 6 everything seems to be ok.
The GRTAGS seems an empty file.
Don't you use ctags parser? If so, ctags parser cannot generate GRTAGS
records.
You can see the parser of your using by the --debug option of gtags(1).
$ gtags --debug
...
File './yacc.c' is handled as follows:
suffix: |.c|
language: |C|
parser: |parser|
library: |/usr/local/lib/gtags/exuberant-ctags.la| <= ctags parser
Would you please check it?
2015-02-20 3:18 GMT+09:00 Anthony Jackson <[email protected]>:
> First of all, thank you for all of your hard work on GNU global. My
> ability to understand code is greatly enhanced by this excellent tool.
>
> Unfortunately with 6.3.2-6.3.4 on CentOS 7 x86_64, gtags never creates
> a GRTAGS file larger than 16K and therefore reverse lookups always
> fail (return no output). On CentOS 6 everything seems to be ok.
>
> OS: CentOS 7 x86_64
> Global versions tried: 6.3.2, 6.3.3, 6.3.4
>
> Example run on CentOS 6 x86_64 that works (expected behavior):
> $ cd linux-2.6.37
> $ gtags
> ls -l
> ...
> -rw-r--r-- 1 user user 6610944 Feb 18 10:38 GPATH
> -rw-r--r-- 1 user user 239206400 Feb 18 10:38 GRTAGS
> -rw-r--r-- 1 user user 98590720 Feb 18 10:37 GTAGS
> ...
> $ global -x get_user_pages
> get_user_pages 1549 mm/memory.c int get_user_pages(struct
> task_struct *tsk, struct mm_struct *mm,
> get_user_pages 177 mm/nommu.c int get_user_pages(struct
> task_struct *tsk, struct mm_struct *mm,
> $ global -xr get_user_pages
> get_user_pages 1947 arch/arm/mach-bcmring/dma.c rc =
> get_user_pages(userTask, /* task */
> get_user_pages 2724 arch/cris/arch-v32/drivers/cryptocop.c err =
> get_user_pages(current,
> get_user_pages 2741 arch/cris/arch-v32/drivers/cryptocop.c
> err = get_user_pages(current,
> ...
>
> Example run on CentOS 7 (unexpected behavior):
> $ cd linux-2.6.37
> $ gtags
> ls -l
> ...
> -rw-r--r-- 1 user user 6610944 Feb 18 11:03 GPATH
> -rw-r--r-- 1 user user 16384 Feb 18 11:03 GRTAGS
> -rw-r--r-- 1 user user 98590720 Feb 18 11:04 GTAGS
> ...
> $ global -x get_user_pages
> get_user_pages 1549 mm/memory.c int get_user_pages(struct
> task_struct *tsk, struct mm_struct *mm,
> get_user_pages 177 mm/nommu.c int get_user_pages(struct
> task_struct *tsk, struct mm_struct *mm,
> $ global -xr get_user_pages
> <no output!>
>
> Notice that the GRTAGS file is tiny (exactly 16K) as compared to
> CentOS 6, and how there is no output from "global -xr get_user_pages".
>
> A similar issue was encountered back in December of 2012, but I didn't
> see any resolution on this mailing list.
>
> See http://lists.gnu.org/archive/html/bug-global/2012-12/msg00001.html
>
> Thanks for you consideration. BTW, I'm highly motivated to solve this
> issue. If you need additional information or tests you need me to run
> on our platform, please let me know.
>
> Anthony
>
> _______________________________________________
> Bug-global mailing list
> [email protected]
> https://lists.gnu.org/mailman/listinfo/bug-global
>
--
Shigio YAMAGUCHI <[email protected]>
PGP fingerprint: D1CB 0B89 B346 4AB6 5663 C4B6 3CA5 BBB3 57BE DDA3
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