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Commit05bb4fc

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committed
Always set the six locale category environment variables in main().
Typical server invocations already achieved that. Invalid localesettings in the initial postmaster environment interfered, as couldmalloc() failure. Setting "LC_MESSAGES=pt_BR.utf8 LC_ALL=invalid" inthe postmaster environment will now choose C-locale messages, notBrazilian Portuguese messages. Most localized programs, including allPostgreSQL frontend executables, do likewise. Users are unlikely toobserve changes involving locale categories other than LC_MESSAGES.CheckMyDatabase() ensures that we successfully set LC_COLLATE andLC_CTYPE; main() sets the remaining three categories to locale "C",which almost cannot fail. Back-patch to 9.0 (all supported versions).
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‎src/backend/main/main.c

Lines changed: 28 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -51,6 +51,7 @@ const char *progname;
5151

5252

5353
staticvoidstartup_hacks(constchar*progname);
54+
staticvoidinit_locale(intcategory,constchar*locale);
5455
staticvoidhelp(constchar*progname);
5556
staticvoidcheck_root(constchar*progname);
5657
staticchar*get_current_username(constchar*progname);
@@ -122,31 +123,31 @@ main(int argc, char *argv[])
122123
char*env_locale;
123124

124125
if ((env_locale=getenv("LC_COLLATE"))!=NULL)
125-
pg_perm_setlocale(LC_COLLATE,env_locale);
126+
init_locale(LC_COLLATE,env_locale);
126127
else
127-
pg_perm_setlocale(LC_COLLATE,"");
128+
init_locale(LC_COLLATE,"");
128129

129130
if ((env_locale=getenv("LC_CTYPE"))!=NULL)
130-
pg_perm_setlocale(LC_CTYPE,env_locale);
131+
init_locale(LC_CTYPE,env_locale);
131132
else
132-
pg_perm_setlocale(LC_CTYPE,"");
133+
init_locale(LC_CTYPE,"");
133134
}
134135
#else
135-
pg_perm_setlocale(LC_COLLATE,"");
136-
pg_perm_setlocale(LC_CTYPE,"");
136+
init_locale(LC_COLLATE,"");
137+
init_locale(LC_CTYPE,"");
137138
#endif
138139

139140
#ifdefLC_MESSAGES
140-
pg_perm_setlocale(LC_MESSAGES,"");
141+
init_locale(LC_MESSAGES,"");
141142
#endif
142143

143144
/*
144145
* We keep these set to "C" always, except transiently in pg_locale.c; see
145146
* that file for explanations.
146147
*/
147-
pg_perm_setlocale(LC_MONETARY,"C");
148-
pg_perm_setlocale(LC_NUMERIC,"C");
149-
pg_perm_setlocale(LC_TIME,"C");
148+
init_locale(LC_MONETARY,"C");
149+
init_locale(LC_NUMERIC,"C");
150+
init_locale(LC_TIME,"C");
150151

151152
/*
152153
* Now that we have absorbed as much as we wish to from the locale
@@ -278,6 +279,23 @@ startup_hacks(const char *progname)
278279
}
279280

280281

282+
/*
283+
* Make the initial permanent setting for a locale category. If that fails,
284+
* perhaps due to LC_foo=invalid in the environment, use locale C. If even
285+
* that fails, perhaps due to out-of-memory, the entire startup fails with it.
286+
* When this returns, we are guaranteed to have a setting for the given
287+
* category's environment variable.
288+
*/
289+
staticvoid
290+
init_locale(intcategory,constchar*locale)
291+
{
292+
if (pg_perm_setlocale(category,locale)==NULL&&
293+
pg_perm_setlocale(category,"C")==NULL)
294+
elog(FATAL,"could not adopt C locale");
295+
}
296+
297+
298+
281299
/*
282300
* Help display should match the options accepted by PostmasterMain()
283301
* and PostgresMain().

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