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Date: Tue, 28 Nov 2023 17:32:14 +0000
From: Alastair Houghton <ahoughton@...le.com>
To: musl@...ts.openwall.com, Rich Felker <dalias@...c.org>
Subject: Re: setlocale() again
> On 18 Sep 2023, at 15:18, Alastair Houghton <ahoughton@...le.com> wrote:
>
> Hi all (Rich especially though :-))
>
> Has anyone had time to take a look at this? I’d like to make some progress on this front if possible.
>
> Kind regards,
>
> Alastair.
Maybe I’ve missed a reply somewhere along the lines; here’s a tentative patch that just does the simple thing of making setlocale(LC_ALL, "") pick the C.UTF-8 locale if it’s unable to find the locale specified in the environment.
This will mean that setlocale(LC_ALL, "non-existent locale") will return NULL, which does have an impact on users if they don’t have a locale installed for Musl but *do* have locale data installed for some other software; in that case, their other software won’t be localized until they also install data for Musl.
(This is the same as current Glibc behaviour.)
Kind regards,
Alastair
---- snip ----
diff --git a/src/locale/locale_map.c b/src/locale/locale_map.c
index da61f7fc..bd11f2ca 100644
--- a/src/locale/locale_map.c
+++ b/src/locale/locale_map.c
@@ -31,7 +31,7 @@ static const char envvars[][12] = {
volatile int __locale_lock[1];
volatile int *const __locale_lockptr = __locale_lock;
-const struct __locale_map *__get_locale(int cat, const char *val)
+const struct __locale_map *__get_locale(int cat, const char *locale)
{
static void *volatile loc_head;
const struct __locale_map *p;
@@ -39,6 +39,7 @@ const struct __locale_map *__get_locale(int cat, const char *val)
const char *path = 0, *z;
char buf[256];
size_t l, n;
+ const char *val = locale;
if (!*val) {
(val = getenv("LC_ALL")) && *val ||
@@ -92,18 +93,9 @@ const struct __locale_map *__get_locale(int cat, const char *val)
}
}
- /* If no locale definition was found, make a locale map
- * object anyway to store the name, which is kept for the
- * sake of being able to do message translations at the
- * application level. */
- if (!new && (new = malloc(sizeof *new))) {
- new->map = __c_dot_utf8.map;
- new->map_size = __c_dot_utf8.map_size;
- memcpy(new->name, val, n);
- new->name[n] = 0;
- new->next = loc_head;
- loc_head = new;
- }
+ /* If no locale definition was found, and we specified a
+ * locale name of "", return the C.UTF-8 locale. */
+ if (!new && !*locale) new = (void *)&__c_dot_utf8;
/* For LC_CTYPE, never return a null pointer unless the
* requested name was "C" or "POSIX". */
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