On 14/01/2023 14:29, Ramsay Jones wrote:
> Hi Junio,
[snip]
> Sorry for not looking into this (and notifying the list) sooner.
Ah, that reminds me...
When I updated to Linux Mint v21.0 (based on latest Ubuntu LTS) last
year, sparse started failing. This was due to a change to the 'regex.h'
header file (the libc6-dev package version was updated from 2.31 to
2.35), where (among other things) the diff looked like:
..
524a525,548
> #ifndef _REGEX_NELTS
> # if (defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__ \
> && !defined __STDC_NO_VLA__)
> # define _REGEX_NELTS(n) n
> # else
> # define _REGEX_NELTS(n)
> # endif
> #endif
>
..
645c681,682
< regmatch_t __pmatch[_Restrict_arr_],
---
> regmatch_t __pmatch[_Restrict_arr_
> _REGEX_NELTS (__nmatch)],
..
The last hunk is the declaration of regexec(), thus:
extern int regexec (const regex_t *_Restrict_ __preg,
const char *_Restrict_ __String, size_t __nmatch,
regmatch_t __pmatch[_Restrict_arr_
_REGEX_NELTS (__nmatch)],
int __eflags);
So, sparse falls over on the '__nmatch' as part of the __pmatch
argument declaration. [Actually, it doesn't bomb out on the
declaration, but at each regexec() call site].
To fix my build, I added the following to my config.mak file on linux:
SPARSE_FLAGS += -D__STDC_NO_VLA__
.. and forgot about it! :)
I need to fix this sometime.
ATB,
Ramsay Jones
