This is a patch which implements an issue discussed in bug #17946[0]. It
doesn't fix the overarching issue of the bug, but merely a consistency
issue which was found while analyzing code by Heikki. I had originally
submitted the patch within that thread, but for visibility and the
purposes of the commitfest, I have re-sent it in its own thread.
[0]:
https://www.postgresql.org/message-id/49dfcad8-90fa-8577-008f-d142e61af...@iki.fi
--
Tristan Partin
Neon (https://neon.tech)
From 02a2cdb83405b5aecaec2af02e379a81161f8372 Mon Sep 17 00:00:00 2001
From: Tristan Partin <tris...@neon.tech>
Date: Wed, 14 Jun 2023 11:36:00 -0500
Subject: [PATCH v1] Make uselocale protection more consistent
In ecpg, uselocale uses are protected by checking if HAVE_USELOCALE is
defined. Use the same check in pg_locale.c. Since HAVE_USELOCALE implies
HAVE_LOCALE_T, the code should be the same on _all_ platforms that
Postgres supports. Otherwise, I am sure there would have been a bug
report with pg_locale.c failing to build due to the system having
locale_t, but not uselocale.
---
src/backend/utils/adt/pg_locale.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/src/backend/utils/adt/pg_locale.c b/src/backend/utils/adt/pg_locale.c
index 31e3b16ae0..3585afb298 100644
--- a/src/backend/utils/adt/pg_locale.c
+++ b/src/backend/utils/adt/pg_locale.c
@@ -2972,7 +2972,7 @@ wchar2char(char *to, const wchar_t *from, size_t tolen, pg_locale_t locale)
}
else
{
-#ifdef HAVE_LOCALE_T
+#ifdef HAVE_USELOCALE
#ifdef HAVE_WCSTOMBS_L
/* Use wcstombs_l for nondefault locales */
result = wcstombs_l(to, from, tolen, locale->info.lt);
@@ -2984,11 +2984,11 @@ wchar2char(char *to, const wchar_t *from, size_t tolen, pg_locale_t locale)
uselocale(save_locale);
#endif /* HAVE_WCSTOMBS_L */
-#else /* !HAVE_LOCALE_T */
- /* Can't have locale != 0 without HAVE_LOCALE_T */
+#else /* !HAVE_USELOCALE */
+ /* Can't have locale != 0 without HAVE_LOCALE_T, which HAVE_USELOCALE implies */
elog(ERROR, "wcstombs_l is not available");
result = 0; /* keep compiler quiet */
-#endif /* HAVE_LOCALE_T */
+#endif /* HAVE_USELOCALE */
}
return result;
@@ -3049,7 +3049,7 @@ char2wchar(wchar_t *to, size_t tolen, const char *from, size_t fromlen,
}
else
{
-#ifdef HAVE_LOCALE_T
+#ifdef HAVE_USELOCALE
#ifdef HAVE_MBSTOWCS_L
/* Use mbstowcs_l for nondefault locales */
result = mbstowcs_l(to, str, tolen, locale->info.lt);
@@ -3061,11 +3061,11 @@ char2wchar(wchar_t *to, size_t tolen, const char *from, size_t fromlen,
uselocale(save_locale);
#endif /* HAVE_MBSTOWCS_L */
-#else /* !HAVE_LOCALE_T */
- /* Can't have locale != 0 without HAVE_LOCALE_T */
+#else /* !HAVE_USELOCALE */
+ /* Can't have locale != 0 without HAVE_LOCALE_T, which HAVE_USELOCALE implies */
elog(ERROR, "mbstowcs_l is not available");
result = 0; /* keep compiler quiet */
-#endif /* HAVE_LOCALE_T */
+#endif /* HAVE_USELOCALE */
}
pfree(str);
--
Tristan Partin
Neon (https://neon.tech)
