[PATCH] Gracefully handle incompatible locale data

[Ondřej Bílka]

On Tue, Sep 22, 2015 at 05:27:55PM +0200, Ludovic Courtès wrote:
> With libc 2.22 people are starting to realize that libc does not
> guarantee that it can load locale data built with another libc version,
> but they learn it the hard way:
> 
>   loadlocale.c:130: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_COLLATE) / sizeof (_nl_value_type_LC_COLLATE[0]))' failed.
> 
> This patch changes such conditions to return EINVAL instead of aborting.
> 
> WDYT?
> 
While that assert is quite cryptic I dont see why just returning EINVAL is
better. How do you distinguish that its wrong locale version versus not
installed?