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Commit3580397

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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).
1 parentaae12e4 commit3580397

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‎src/backend/main/main.c

Lines changed: 28 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -50,6 +50,7 @@ const char *progname;
5050

5151

5252
staticvoidstartup_hacks(constchar*progname);
53+
staticvoidinit_locale(intcategory,constchar*locale);
5354
staticvoidhelp(constchar*progname);
5455
staticvoidcheck_root(constchar*progname);
5556
staticchar*get_current_username(constchar*progname);
@@ -111,31 +112,31 @@ main(int argc, char *argv[])
111112
char*env_locale;
112113

113114
if ((env_locale=getenv("LC_COLLATE"))!=NULL)
114-
pg_perm_setlocale(LC_COLLATE,env_locale);
115+
init_locale(LC_COLLATE,env_locale);
115116
else
116-
pg_perm_setlocale(LC_COLLATE,"");
117+
init_locale(LC_COLLATE,"");
117118

118119
if ((env_locale=getenv("LC_CTYPE"))!=NULL)
119-
pg_perm_setlocale(LC_CTYPE,env_locale);
120+
init_locale(LC_CTYPE,env_locale);
120121
else
121-
pg_perm_setlocale(LC_CTYPE,"");
122+
init_locale(LC_CTYPE,"");
122123
}
123124
#else
124-
pg_perm_setlocale(LC_COLLATE,"");
125-
pg_perm_setlocale(LC_CTYPE,"");
125+
init_locale(LC_COLLATE,"");
126+
init_locale(LC_CTYPE,"");
126127
#endif
127128

128129
#ifdefLC_MESSAGES
129-
pg_perm_setlocale(LC_MESSAGES,"");
130+
init_locale(LC_MESSAGES,"");
130131
#endif
131132

132133
/*
133134
* We keep these set to "C" always, except transiently in pg_locale.c; see
134135
* that file for explanations.
135136
*/
136-
pg_perm_setlocale(LC_MONETARY,"C");
137-
pg_perm_setlocale(LC_NUMERIC,"C");
138-
pg_perm_setlocale(LC_TIME,"C");
137+
init_locale(LC_MONETARY,"C");
138+
init_locale(LC_NUMERIC,"C");
139+
init_locale(LC_TIME,"C");
139140

140141
/*
141142
* Now that we have absorbed as much as we wish to from the locale
@@ -268,6 +269,23 @@ startup_hacks(const char *progname)
268269
}
269270

270271

272+
/*
273+
* Make the initial permanent setting for a locale category. If that fails,
274+
* perhaps due to LC_foo=invalid in the environment, use locale C. If even
275+
* that fails, perhaps due to out-of-memory, the entire startup fails with it.
276+
* When this returns, we are guaranteed to have a setting for the given
277+
* category's environment variable.
278+
*/
279+
staticvoid
280+
init_locale(intcategory,constchar*locale)
281+
{
282+
if (pg_perm_setlocale(category,locale)==NULL&&
283+
pg_perm_setlocale(category,"C")==NULL)
284+
elog(FATAL,"could not adopt C locale");
285+
}
286+
287+
288+
271289
/*
272290
* Help display should match the options accepted by PostmasterMain()
273291
* and PostgresMain().

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