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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-27 19:37:42 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-27 19:37:42 +0000 |
| commit | 1b0c30f68de7af7511b5a2c7297ff55c29a84db6 (patch) | |
| tree | 6ec7b3b88b8d42a29fc80c80e919e7bc6310494c /src/backend/utils/mb/wchar.c | |
| parent | f4d4bc827ffad194733344be07bab5a8c8b34deb (diff) | |
Install a more robust solution for the problem of infinite error-processing
recursion when we are unable to convert a localized error message to the
client's encoding. We've been over this ground before, but as reported by
Ibrar Ahmed, it still didn't work in the case of conversion failures for
the conversion-failure message itself :-(. Fix by installing a "circuit
breaker" that disables attempts to localize this message once we get into
recursion trouble.
Patch all supported branches, because it is in fact broken in all of them;
though I had to add some missing translations to the older branches in
order to expose the failure in the particular test case I was using.
Diffstat (limited to 'src/backend/utils/mb/wchar.c')
| -rw-r--r-- | src/backend/utils/mb/wchar.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/backend/utils/mb/wchar.c b/src/backend/utils/mb/wchar.c index 6e954675393..5e841629d82 100644 --- a/src/backend/utils/mb/wchar.c +++ b/src/backend/utils/mb/wchar.c @@ -1,7 +1,7 @@ /* * conversion functions between pg_wchar and multibyte streams. * Tatsuo Ishii - * $PostgreSQL: pgsql/src/backend/utils/mb/wchar.c,v 1.47.2.6 2007/03/26 11:43:09 ishii Exp $ + * $PostgreSQL: pgsql/src/backend/utils/mb/wchar.c,v 1.47.2.7 2008/10/27 19:37:42 tgl Exp $ * * WIN1250 client encoding updated by Pavel Behal * @@ -1379,7 +1379,20 @@ report_untranslatable_char(int src_encoding, int dest_encoding, for (j = 0; j < jlimit; j++) p += sprintf(p, "%02x", (unsigned char) mbstr[j]); - ereport(ERROR, + /* + * In an error recursion situation, don't try to translate the message. + * This gets us out of trouble if the problem is failure to convert + * this very message (after translation) to the client encoding. + */ + if (in_error_recursion_trouble()) + ereport(ERROR, + (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER), + errmsg_internal("character 0x%s of encoding \"%s\" has no equivalent in \"%s\"", + buf, + pg_enc2name_tbl[src_encoding].name, + pg_enc2name_tbl[dest_encoding].name))); + else + ereport(ERROR, (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER), errmsg("character 0x%s of encoding \"%s\" has no equivalent in \"%s\"", buf, |