Make libpq_gettext save and restore errno in a Windows-compatible way.

Also, back-patch fix into back branches.

diff --git a/src/interfaces/libpq/fe-misc.c b/src/interfaces/libpq/fe-misc.c
index 656c34e8d1d9493c9f576ac7f401a594262eeabd..5639d9d17bef7870ef2f5d7eff26e7a38f1a6a7a 100644 (file)
--- a/src/interfaces/libpq/fe-misc.c
+++ b/src/interfaces/libpq/fe-misc.c
@@ -920,8 +920,16 @@ libpq_gettext(const char *msgid)
 
        if (!already_bound)
        {
+               /* dgettext() preserves errno, but bindtextdomain() doesn't */
+               int             save_errno = errno;
+
                already_bound = 1;
                bindtextdomain("libpq", LOCALEDIR);
+#ifdef WIN32
+               SetLastError(save_errno);
+#else
+               errno = save_errno;
+#endif
        }
 
        return dgettext("libpq", msgid);